Move IO related methods to IO namespaces (#7)

Also renames more tests to be more meaningful

X10D.Tests/src/Collections/EnumerableTests.cs

@@ -7,21 +7,20 @@ namespace X10D.Tests.Collections;
 public class EnumerableTests
 {
     [TestMethod]
-    public void EnumerableShuffledShouldBeDifferentOrder()
-    {
-        var list = new List<int>(Enumerable.Range(1, 52)); // 52! chance of being shuffled to the same order
-        var shuffled = new List<int>(list);
-
-        CollectionAssert.AreEqual(list, shuffled);
-
-        shuffled = new List<int>(list.Shuffled());
-
-        CollectionAssert.AreNotEqual(list, shuffled);
-    }
-
-    [TestMethod]
-    public void NullShuffledShouldThrow()
+    public void Shuffled_ShouldThrow_GivenNull()
     {
         Assert.ThrowsException<ArgumentNullException>(() => ((List<int>?)null)!.Shuffled());
     }
+
+    [TestMethod]
+    public void Shuffled_ShouldReorder_GivenNotNull()
+    {
+        int[] array = Enumerable.Range(1, 52).ToArray(); // 52! chance of being shuffled to the same order
+        int[] shuffled = array[..];
+
+        CollectionAssert.AreEqual(array, shuffled);
+
+        shuffled = array.Shuffled().ToArray();
+        CollectionAssert.AreNotEqual(array, shuffled);
+    }
 }

X10D.Tests/src/Collections/ListTests.cs

@@ -39,6 +39,33 @@ public class ListTests
         CollectionAssert.AreEqual(comparison, args[1..]);
     }
 
+    [TestMethod]
+    public void Fill_ShouldThrow_GivenExceededCount()
+    {
+        int[] array = Array.Empty<int>();
+        var list = new List<int>();
+        Assert.ThrowsException<ArgumentOutOfRangeException>(() => array.Fill(0, 0, 1));
+        Assert.ThrowsException<ArgumentOutOfRangeException>(() => list.Fill(0, 0, 1));
+    }
+
+    [TestMethod]
+    public void Fill_ShouldThrow_GivenNegativeCount()
+    {
+        int[] array = Array.Empty<int>();
+        var list = new List<int>();
+        Assert.ThrowsException<ArgumentOutOfRangeException>(() => array.Fill(0, 0, -1));
+        Assert.ThrowsException<ArgumentOutOfRangeException>(() => list.Fill(0, 0, -1));
+    }
+
+    [TestMethod]
+    public void Fill_ShouldThrow_GivenNegativeStartIndex()
+    {
+        int[] array = Array.Empty<int>();
+        var list = new List<int>();
+        Assert.ThrowsException<ArgumentOutOfRangeException>(() => array.Fill(0, -1, 0));
+        Assert.ThrowsException<ArgumentOutOfRangeException>(() => list.Fill(0, -1, 0));
+    }
+
     [TestMethod]
     public void Fill_ShouldThrow_GivenNull()
     {
@@ -46,6 +73,8 @@ public class ListTests
         List<int>? list = null;
         Assert.ThrowsException<ArgumentNullException>(() => array!.Fill(0));
         Assert.ThrowsException<ArgumentNullException>(() => list!.Fill(0));
+        Assert.ThrowsException<ArgumentNullException>(() => array!.Fill(0, 0, 0));
+        Assert.ThrowsException<ArgumentNullException>(() => list!.Fill(0, 0, 0));
     }
 
     [TestMethod]

X10D.Tests/src/Core/ByteTests.cs

@@ -1,4 +1,5 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
 
 namespace X10D.Tests.Core;
 

X10D.Tests/src/Core/DoubleTests.cs

@@ -62,17 +62,6 @@ public class DoubleTests
         Assert.AreEqual(0.20943951023931956, 12.0.DegreesToRadians());
     }
 
-    /// <summary>
-    ///     Tests for <see cref="DoubleExtensions.GetBytes" />.
-    /// </summary>
-    [TestMethod]
-    public void GetBytes()
-    {
-        CollectionAssert.AreEqual(
-            new byte[] {0x18, 0x2D, 0x44, 0x54, 0xFB, 0x21, 0x09, 0x40},
-            Math.PI.GetBytes());
-    }
-
     /// <summary>
     ///     Tests for <see cref="DoubleExtensions.IsEven" />.
     /// </summary>

X10D.Tests/src/Core/EnumerableTests.cs

@@ -1,5 +1,4 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using X10D.Collections;
 using X10D.Core;
 
 namespace X10D.Tests.Core;
@@ -11,19 +10,11 @@ public class EnumerableTests
     [DataRow(1)]
     [DataRow("f")]
     [DataRow(true)]
-    public void AsEnumerable(object o)
+    public void AsEnumerable_ShouldWrapElement_GivenValue(object o)
     {
         IEnumerable<object?> array = o.AsEnumerable().ToArray(); // prevent multiple enumeration of IEnumerable
         Assert.IsNotNull(array);
         Assert.IsTrue(array.Count() == 1);
         Assert.AreEqual(o, array.ElementAt(0));
     }
-
-    [TestMethod]
-    [DataRow(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)]
-    public void Shuffled(params int[] source)
-    {
-        int[] shuffled = source.Shuffled().ToArray(); // ToArray forces type match
-        CollectionAssert.AreNotEqual(source, shuffled);
-    }
 }

X10D.Tests/src/IO/ByteTests.cs

@@ -0,0 +1,32 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+public class ByteTests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsArrayContainingItself()
+    {
+        const byte value = 0xFF;
+        CollectionAssert.AreEqual(new[] {value}, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanContainingItself_GivenLargeEnoughSpan()
+    {
+        const byte value = 0xFF;
+        Span<byte> buffer = stackalloc byte[1];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(new[] {value}, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const byte value = 0x0F;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/DoubleTests.cs

@@ -0,0 +1,66 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+public class DoubleTests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue()
+    {
+        const double value = 42.5;
+        byte[] bytes = BitConverter.IsLittleEndian
+            ? new byte[] {0, 0, 0, 0, 0, 0x40, 0x45, 0x40}
+            : new byte[] {0x40, 0x45, 0x40, 0, 0, 0, 0, 0};
+        CollectionAssert.AreEqual(bytes, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue_WithEndianness()
+    {
+        const double value = 42.5;
+        byte[] littleEndian = {0, 0, 0, 0, 0, 0x40, 0x45, 0x40};
+        byte[] bigEndian = {0x40, 0x45, 0x40, 0, 0, 0, 0, 0};
+
+        CollectionAssert.AreEqual(littleEndian, value.GetBytes(Endianness.LittleEndian));
+        CollectionAssert.AreEqual(bigEndian, value.GetBytes(Endianness.BigEndian));
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan()
+    {
+        const double value = 42.5;
+        byte[] bytes = BitConverter.IsLittleEndian
+            ? new byte[] {0, 0, 0, 0, 0, 0x40, 0x45, 0x40}
+            : new byte[] {0x40, 0x45, 0x40, 0, 0, 0, 0, 0};
+
+        Span<byte> buffer = stackalloc byte[8];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(bytes, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan_WithEndianness()
+    {
+        const double value = 42.5;
+        byte[] littleEndian = {0, 0, 0, 0, 0, 0x40, 0x45, 0x40};
+        byte[] bigEndian = {0x40, 0x45, 0x40, 0, 0, 0, 0, 0};
+
+        Span<byte> buffer = stackalloc byte[8];
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.LittleEndian));
+        CollectionAssert.AreEqual(littleEndian, buffer.ToArray());
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.BigEndian));
+        CollectionAssert.AreEqual(bigEndian, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const double value = 42.5;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/Int16Tests.cs

@@ -0,0 +1,62 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+public class Int16Tests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue()
+    {
+        const short value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian ? new byte[] {0x0F, 0} : new byte[] {0, 0x0F};
+        CollectionAssert.AreEqual(bytes, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue_WithEndianness()
+    {
+        const short value = 0x0F;
+        byte[] littleEndian = {0x0F, 0};
+        byte[] bigEndian = {0, 0x0F};
+
+        CollectionAssert.AreEqual(littleEndian, value.GetBytes(Endianness.LittleEndian));
+        CollectionAssert.AreEqual(bigEndian, value.GetBytes(Endianness.BigEndian));
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan()
+    {
+        const short value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian ? new byte[] {0x0F, 0} : new byte[] {0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[2];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(bytes, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan_WithEndianness()
+    {
+        const short value = 0x0F;
+        byte[] littleEndian = {0x0F, 0};
+        byte[] bigEndian = {0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[2];
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.LittleEndian));
+        CollectionAssert.AreEqual(littleEndian, buffer.ToArray());
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.BigEndian));
+        CollectionAssert.AreEqual(bigEndian, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const short value = 0x0F;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/Int32Tests.cs

@@ -0,0 +1,62 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+public class Int32Tests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue()
+    {
+        const int value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian ? new byte[] {0x0F, 0, 0, 0} : new byte[] {0, 0, 0, 0x0F};
+        CollectionAssert.AreEqual(bytes, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue_WithEndianness()
+    {
+        const int value = 0x0F;
+        byte[] littleEndian = {0x0F, 0, 0, 0};
+        byte[] bigEndian = {0, 0, 0, 0x0F};
+
+        CollectionAssert.AreEqual(littleEndian, value.GetBytes(Endianness.LittleEndian));
+        CollectionAssert.AreEqual(bigEndian, value.GetBytes(Endianness.BigEndian));
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan()
+    {
+        const int value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian ? new byte[] {0x0F, 0, 0, 0} : new byte[] {0, 0, 0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[4];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(bytes, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan_WithEndianness()
+    {
+        const int value = 0x0F;
+        byte[] littleEndian = {0x0F, 0, 0, 0};
+        byte[] bigEndian = {0, 0, 0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[4];
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.LittleEndian));
+        CollectionAssert.AreEqual(littleEndian, buffer.ToArray());
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.BigEndian));
+        CollectionAssert.AreEqual(bigEndian, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const int value = 0x0F;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/Int64Tests.cs

@@ -0,0 +1,66 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+public class Int64Tests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue()
+    {
+        const long value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian
+            ? new byte[] {0x0F, 0, 0, 0, 0, 0, 0, 0}
+            : new byte[] {0, 0, 0, 0, 0, 0, 0, 0x0F};
+        CollectionAssert.AreEqual(bytes, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue_WithEndianness()
+    {
+        const long value = 0x0F;
+        byte[] littleEndian = {0x0F, 0, 0, 0, 0, 0, 0, 0};
+        byte[] bigEndian = {0, 0, 0, 0, 0, 0, 0, 0x0F};
+
+        CollectionAssert.AreEqual(littleEndian, value.GetBytes(Endianness.LittleEndian));
+        CollectionAssert.AreEqual(bigEndian, value.GetBytes(Endianness.BigEndian));
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan()
+    {
+        const long value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian
+            ? new byte[] {0x0F, 0, 0, 0, 0, 0, 0, 0}
+            : new byte[] {0, 0, 0, 0, 0, 0, 0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[8];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(bytes, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan_WithEndianness()
+    {
+        const long value = 0x0F;
+        byte[] littleEndian = {0x0F, 0, 0, 0, 0, 0, 0, 0};
+        byte[] bigEndian = {0, 0, 0, 0, 0, 0, 0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[8];
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.LittleEndian));
+        CollectionAssert.AreEqual(littleEndian, buffer.ToArray());
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.BigEndian));
+        CollectionAssert.AreEqual(bigEndian, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const long value = 0x0F;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/SByteTests.cs

@@ -0,0 +1,33 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+[CLSCompliant(false)]
+public class SByteTests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsArrayContainingItself()
+    {
+        const sbyte value = 0x0F;
+        CollectionAssert.AreEqual(new[] {(byte)value}, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanContainingItself_GivenLargeEnoughSpan()
+    {
+        const sbyte value = 0x0F;
+        Span<byte> buffer = stackalloc byte[1];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(new[] {(byte)value}, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const sbyte value = 0x0F;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/SingleTests.cs

@@ -0,0 +1,66 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+public class SingleTests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue()
+    {
+        const float value = 42.5f;
+        byte[] bytes = BitConverter.IsLittleEndian
+            ? new byte[] {0, 0, 0x2A, 0x42}
+            : new byte[] {0x42, 0x2A, 0, 0};
+        CollectionAssert.AreEqual(bytes, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue_WithEndianness()
+    {
+        const float value = 42.5f;
+        byte[] littleEndian = {0, 0, 0x2A, 0x42};
+        byte[] bigEndian = {0x42, 0x2A, 0, 0};
+
+        CollectionAssert.AreEqual(littleEndian, value.GetBytes(Endianness.LittleEndian));
+        CollectionAssert.AreEqual(bigEndian, value.GetBytes(Endianness.BigEndian));
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan()
+    {
+        const float value = 42.5f;
+        byte[] bytes = BitConverter.IsLittleEndian
+            ? new byte[] {0, 0, 0x2A, 0x42}
+            : new byte[] {0x42, 0x2A, 0, 0};
+
+        Span<byte> buffer = stackalloc byte[4];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(bytes, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan_WithEndianness()
+    {
+        const float value = 42.5f;
+        byte[] littleEndian = {0, 0, 0x2A, 0x42};
+        byte[] bigEndian = {0x42, 0x2A, 0, 0};
+
+        Span<byte> buffer = stackalloc byte[4];
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.LittleEndian));
+        CollectionAssert.AreEqual(littleEndian, buffer.ToArray());
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.BigEndian));
+        CollectionAssert.AreEqual(bigEndian, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const float value = 42.5f;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/UInt16Tests.cs

@@ -0,0 +1,63 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+[CLSCompliant(false)]
+public class UInt16Tests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue()
+    {
+        const ushort value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian ? new byte[] {0x0F, 0} : new byte[] {0, 0x0F};
+        CollectionAssert.AreEqual(bytes, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue_WithEndianness()
+    {
+        const ushort value = 0x0F;
+        byte[] littleEndian = {0x0F, 0};
+        byte[] bigEndian = {0, 0x0F};
+
+        CollectionAssert.AreEqual(littleEndian, value.GetBytes(Endianness.LittleEndian));
+        CollectionAssert.AreEqual(bigEndian, value.GetBytes(Endianness.BigEndian));
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan()
+    {
+        const ushort value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian ? new byte[] {0x0F, 0} : new byte[] {0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[2];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(bytes, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan_WithEndianness()
+    {
+        const ushort value = 0x0F;
+        byte[] littleEndian = {0x0F, 0};
+        byte[] bigEndian = {0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[2];
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.LittleEndian));
+        CollectionAssert.AreEqual(littleEndian, buffer.ToArray());
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.BigEndian));
+        CollectionAssert.AreEqual(bigEndian, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const ushort value = 0x0F;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/UInt32Tests.cs

@@ -0,0 +1,63 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+[CLSCompliant(false)]
+public class UInt32Tests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue()
+    {
+        const uint value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian ? new byte[] {0x0F, 0, 0, 0} : new byte[] {0, 0, 0, 0x0F};
+        CollectionAssert.AreEqual(bytes, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue_WithEndianness()
+    {
+        const uint value = 0x0F;
+        byte[] littleEndian = {0x0F, 0, 0, 0};
+        byte[] bigEndian = {0, 0, 0, 0x0F};
+
+        CollectionAssert.AreEqual(littleEndian, value.GetBytes(Endianness.LittleEndian));
+        CollectionAssert.AreEqual(bigEndian, value.GetBytes(Endianness.BigEndian));
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan()
+    {
+        const uint value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian ? new byte[] {0x0F, 0, 0, 0} : new byte[] {0, 0, 0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[4];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(bytes, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan_WithEndianness()
+    {
+        const uint value = 0x0F;
+        byte[] littleEndian = {0x0F, 0, 0, 0};
+        byte[] bigEndian = {0, 0, 0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[4];
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.LittleEndian));
+        CollectionAssert.AreEqual(littleEndian, buffer.ToArray());
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.BigEndian));
+        CollectionAssert.AreEqual(bigEndian, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const uint value = 0x0F;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/IO/UInt64Tests.cs

@@ -0,0 +1,67 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using X10D.IO;
+
+namespace X10D.Tests.IO;
+
+[TestClass]
+[CLSCompliant(false)]
+public class UInt64Tests
+{
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue()
+    {
+        const ulong value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian
+            ? new byte[] {0x0F, 0, 0, 0, 0, 0, 0, 0}
+            : new byte[] {0, 0, 0, 0, 0, 0, 0, 0x0F};
+        CollectionAssert.AreEqual(bytes, value.GetBytes());
+    }
+
+    [TestMethod]
+    public void GetBytes_ReturnsCorrectValue_WithEndianness()
+    {
+        const ulong value = 0x0F;
+        byte[] littleEndian = {0x0F, 0, 0, 0, 0, 0, 0, 0};
+        byte[] bigEndian = {0, 0, 0, 0, 0, 0, 0, 0x0F};
+
+        CollectionAssert.AreEqual(littleEndian, value.GetBytes(Endianness.LittleEndian));
+        CollectionAssert.AreEqual(bigEndian, value.GetBytes(Endianness.BigEndian));
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan()
+    {
+        const ulong value = 0x0F;
+        byte[] bytes = BitConverter.IsLittleEndian
+            ? new byte[] {0x0F, 0, 0, 0, 0, 0, 0, 0}
+            : new byte[] {0, 0, 0, 0, 0, 0, 0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[8];
+        Assert.IsTrue(value.TryWriteBytes(buffer));
+        CollectionAssert.AreEqual(bytes, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsTrue_FillsSpanCorrectly_GivenLargeEnoughSpan_WithEndianness()
+    {
+        const ulong value = 0x0F;
+        byte[] littleEndian = {0x0F, 0, 0, 0, 0, 0, 0, 0};
+        byte[] bigEndian = {0, 0, 0, 0, 0, 0, 0, 0x0F};
+
+        Span<byte> buffer = stackalloc byte[8];
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.LittleEndian));
+        CollectionAssert.AreEqual(littleEndian, buffer.ToArray());
+
+        Assert.IsTrue(value.TryWriteBytes(buffer, Endianness.BigEndian));
+        CollectionAssert.AreEqual(bigEndian, buffer.ToArray());
+    }
+
+    [TestMethod]
+    public void TryWriteBytes_ReturnsFalse_GivenSmallSpan()
+    {
+        const ulong value = 0x0F;
+        Span<byte> buffer = stackalloc byte[0];
+        Assert.IsFalse(value.TryWriteBytes(buffer));
+    }
+}

X10D.Tests/src/Time/ByteTests.cs

@@ -7,19 +7,19 @@ namespace X10D.Tests.Time;
 public class ByteTests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void FromUnixTimeMilliseconds_ShouldBeEpoch_GivenZero()
     {
-        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Ticks());
-        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Milliseconds());
-        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Seconds());
-        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Minutes());
-        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Days());
-        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Hours());
-        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Weeks());
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), ((byte)0).FromUnixTimeMilliseconds());
     }
 
     [TestMethod]
-    public void OneShouldBePositive()
+    public void FromUnixTimeSeconds_ShouldBeEpoch_GivenZero()
+    {
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), ((byte)0).FromUnixTimeSeconds());
+    }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(((byte)1).Ticks() > TimeSpan.Zero);
         Assert.IsTrue(((byte)1).Milliseconds() > TimeSpan.Zero);
@@ -29,4 +29,16 @@ public class ByteTests
         Assert.IsTrue(((byte)1).Hours() > TimeSpan.Zero);
         Assert.IsTrue(((byte)1).Weeks() > TimeSpan.Zero);
     }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
+    {
+        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Ticks());
+        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Milliseconds());
+        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Seconds());
+        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Minutes());
+        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Days());
+        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Hours());
+        Assert.AreEqual(TimeSpan.Zero, ((byte)0).Weeks());
+    }
 }

X10D.Tests/src/Time/DateTimeOffsetTests.cs

@@ -7,7 +7,7 @@ namespace X10D.Tests.Time;
 public class DateTimeOffsetTests
 {
     [TestMethod]
-    public void AgeShouldBeCorrect()
+    public void Age_ShouldBeDifference_Given1Jan2000()
     {
         DateTimeOffset birthday = new DateTime(2000, 1, 1);
         DateTimeOffset today = DateTime.Now.Date;
@@ -16,7 +16,7 @@ public class DateTimeOffsetTests
     }
 
     [TestMethod]
-    public void FirstShouldBeCorrect()
+    public void First_ShouldBeSaturday_Given1Jan2000()
     {
         DateTimeOffset date = new DateTime(2000, 1, 1);
 
@@ -30,7 +30,7 @@ public class DateTimeOffsetTests
     }
 
     [TestMethod]
-    public void FirstDayOfMonthShouldBeCorrect()
+    public void FirstDayOfMonth_ShouldBe1st_GivenToday()
     {
         DateTimeOffset today = DateTime.Now.Date;
 
@@ -38,7 +38,7 @@ public class DateTimeOffsetTests
     }
 
     [TestMethod]
-    public void LastShouldBeCorrect()
+    public void LastSaturday_ShouldBe29th_Given1Jan2000()
     {
         DateTimeOffset date = new DateTime(2000, 1, 1);
 
@@ -52,15 +52,65 @@ public class DateTimeOffsetTests
     }
 
     [TestMethod]
-    public void LastDayOfMonthShouldBeCorrect()
+    public void LastDayOfMonth_ShouldBe28th_GivenFebruary1999()
     {
-        DateTimeOffset date = new DateTime(2000, 1, 1);
+        DateTimeOffset february = new DateTime(1999, 2, 1);
 
-        Assert.AreEqual(new DateTime(date.Year, date.Month, 31), date.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(february.Year, february.Month, 28), february.LastDayOfMonth());
     }
 
     [TestMethod]
-    public void NextShouldBeCorrect()
+    public void LastDayOfMonth_ShouldBe29th_GivenFebruary2000()
+    {
+        DateTimeOffset february = new DateTime(2000, 2, 1);
+
+        Assert.AreEqual(new DateTime(february.Year, february.Month, 29), february.LastDayOfMonth());
+    }
+
+    [TestMethod]
+    public void LastDayOfMonth_ShouldBe28th_GivenFebruary2001()
+    {
+        DateTimeOffset february = new DateTime(2001, 2, 1);
+
+        Assert.AreEqual(new DateTime(february.Year, february.Month, 28), february.LastDayOfMonth());
+    }
+
+    [TestMethod]
+    public void LastDayOfMonth_ShouldBe30th_GivenAprilJuneSeptemberNovember()
+    {
+        DateTimeOffset april = new DateTime(2000, 4, 1);
+        DateTimeOffset june = new DateTime(2000, 6, 1);
+        DateTimeOffset september = new DateTime(2000, 9, 1);
+        DateTimeOffset november = new DateTime(2000, 11, 1);
+
+        Assert.AreEqual(new DateTime(april.Year, april.Month, 30), april.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(june.Year, june.Month, 30), june.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(september.Year, september.Month, 30), september.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(november.Year, november.Month, 30), november.LastDayOfMonth());
+    }
+
+    [TestMethod]
+    public void LastDayOfMonth_ShouldBe31st_GivenJanuaryMarchMayJulyAugustOctoberDecember()
+    {
+        DateTimeOffset january = new DateTime(2000, 1, 1);
+        DateTimeOffset march = new DateTime(2000, 3, 1);
+        DateTimeOffset may = new DateTime(2000, 5, 1);
+        DateTimeOffset july = new DateTime(2000, 7, 1);
+        DateTimeOffset august = new DateTime(2000, 8, 1);
+        DateTimeOffset october = new DateTime(2000, 10, 1);
+        DateTimeOffset december = new DateTime(2000, 12, 1);
+
+        Assert.AreEqual(new DateTime(january.Year, january.Month, 31), january.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(march.Year, march.Month, 31), march.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(may.Year, may.Month, 31), may.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(july.Year, july.Month, 31), july.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(august.Year, august.Month, 31), august.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(october.Year, october.Month, 31), october.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(december.Year, december.Month, 31), december.LastDayOfMonth());
+    }
+
+    [TestMethod]
+    public void NextSaturday_ShouldBe8th_Given1Jan2000()
     {
         DateTimeOffset date = new DateTime(2000, 1, 1);
 

X10D.Tests/src/Time/DateTimeTests.cs

@@ -7,7 +7,7 @@ namespace X10D.Tests.Time;
 public class DateTimeTests
 {
     [TestMethod]
-    public void AgeShouldBeCorrect()
+    public void Age_ShouldBeDifference_Given1Jan2000()
     {
         var birthday = new DateTime(2000, 1, 1);
         DateTime today = DateTime.Now.Date;
@@ -16,7 +16,7 @@ public class DateTimeTests
     }
 
     [TestMethod]
-    public void FirstShouldBeCorrect()
+    public void First_ShouldBeSaturday_Given1Jan2000()
     {
         var date = new DateTime(2000, 1, 1);
 
@@ -30,7 +30,7 @@ public class DateTimeTests
     }
 
     [TestMethod]
-    public void FirstDayOfMonthShouldBeCorrect()
+    public void FirstDayOfMonth_ShouldBe1st_GivenToday()
     {
         DateTime today = DateTime.Now.Date;
 
@@ -38,7 +38,7 @@ public class DateTimeTests
     }
 
     [TestMethod]
-    public void LastShouldBeCorrect()
+    public void LastSaturday_ShouldBe29th_Given1Jan2000()
     {
         var date = new DateTime(2000, 1, 1);
 
@@ -52,15 +52,65 @@ public class DateTimeTests
     }
 
     [TestMethod]
-    public void LastDayOfMonthShouldBeCorrect()
+    public void LastDayOfMonth_ShouldBe28th_GivenFebruary1999()
     {
-        var date = new DateTime(2000, 1, 1);
+        var february = new DateTime(1999, 2, 1);
 
-        Assert.AreEqual(new DateTime(date.Year, date.Month, 31), date.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(february.Year, february.Month, 28), february.LastDayOfMonth());
     }
 
     [TestMethod]
-    public void NextShouldBeCorrect()
+    public void LastDayOfMonth_ShouldBe29th_GivenFebruary2000()
+    {
+        var february = new DateTime(2000, 2, 1);
+
+        Assert.AreEqual(new DateTime(february.Year, february.Month, 29), february.LastDayOfMonth());
+    }
+
+    [TestMethod]
+    public void LastDayOfMonth_ShouldBe28th_GivenFebruary2001()
+    {
+        var february = new DateTime(2001, 2, 1);
+
+        Assert.AreEqual(new DateTime(february.Year, february.Month, 28), february.LastDayOfMonth());
+    }
+
+    [TestMethod]
+    public void LastDayOfMonth_ShouldBe30th_GivenAprilJuneSeptemberNovember()
+    {
+        var april = new DateTime(2000, 4, 1);
+        var june = new DateTime(2000, 6, 1);
+        var september = new DateTime(2000, 9, 1);
+        var november = new DateTime(2000, 11, 1);
+
+        Assert.AreEqual(new DateTime(april.Year, april.Month, 30), april.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(june.Year, june.Month, 30), june.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(september.Year, september.Month, 30), september.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(november.Year, november.Month, 30), november.LastDayOfMonth());
+    }
+
+    [TestMethod]
+    public void LastDayOfMonth_ShouldBe31st_GivenJanuaryMarchMayJulyAugustOctoberDecember()
+    {
+        var january = new DateTime(2000, 1, 1);
+        var march = new DateTime(2000, 3, 1);
+        var may = new DateTime(2000, 5, 1);
+        var july = new DateTime(2000, 7, 1);
+        var august = new DateTime(2000, 8, 1);
+        var october = new DateTime(2000, 10, 1);
+        var december = new DateTime(2000, 12, 1);
+
+        Assert.AreEqual(new DateTime(january.Year, january.Month, 31), january.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(march.Year, march.Month, 31), march.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(may.Year, may.Month, 31), may.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(july.Year, july.Month, 31), july.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(august.Year, august.Month, 31), august.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(october.Year, october.Month, 31), october.LastDayOfMonth());
+        Assert.AreEqual(new DateTime(december.Year, december.Month, 31), december.LastDayOfMonth());
+    }
+
+    [TestMethod]
+    public void NextSaturday_ShouldBe8th_Given1Jan2000()
     {
         var date = new DateTime(2000, 1, 1);
 
@@ -68,7 +118,7 @@ public class DateTimeTests
     }
 
     [TestMethod]
-    public void ToUnixTimeMillisecondsShouldBeCorrect()
+    public void ToUnixTimeMilliseconds_ShouldBe946684800000_Given1Jan2000()
     {
         var date = new DateTime(2000, 1, 1);
 
@@ -76,7 +126,7 @@ public class DateTimeTests
     }
 
     [TestMethod]
-    public void ToUnixTimeSecondsShouldBeCorrect()
+    public void ToUnixTimeSeconds_ShouldBe946684800_Given1Jan2000()
     {
         var date = new DateTime(2000, 1, 1);
 

X10D.Tests/src/Time/DecimalTests.cs

@@ -7,7 +7,7 @@ namespace X10D.Tests.Time;
 public class DecimalTests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
     {
         Assert.AreEqual(TimeSpan.Zero, 0m.Milliseconds());
         Assert.AreEqual(TimeSpan.Zero, 0m.Seconds());
@@ -18,7 +18,7 @@ public class DecimalTests
     }
 
     [TestMethod]
-    public void OneShouldBePositive()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(1m.Milliseconds() > TimeSpan.Zero);
         Assert.IsTrue(1m.Seconds() > TimeSpan.Zero);
@@ -29,7 +29,7 @@ public class DecimalTests
     }
 
     [TestMethod]
-    public void MinusOneShouldBeNegative()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeNegative_GivenMinusOne()
     {
         Assert.IsTrue((-1m).Milliseconds() < TimeSpan.Zero);
         Assert.IsTrue((-1m).Seconds() < TimeSpan.Zero);

X10D.Tests/src/Time/DoubleTests.cs

@@ -19,7 +19,7 @@ public class DoubleTests
     }
 
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
     {
         Assert.AreEqual(TimeSpan.Zero, _zero.Milliseconds());
         Assert.AreEqual(TimeSpan.Zero, _zero.Seconds());
@@ -30,7 +30,7 @@ public class DoubleTests
     }
 
     [TestMethod]
-    public void OneShouldBePositive()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(_one.Milliseconds() > TimeSpan.Zero);
         Assert.IsTrue(_one.Seconds() > TimeSpan.Zero);
@@ -41,7 +41,7 @@ public class DoubleTests
     }
 
     [TestMethod]
-    public void MinusOneShouldBeNegative()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeNegative_GivenMinusOne()
     {
         Assert.IsTrue((_negativeOne).Milliseconds() < TimeSpan.Zero);
         Assert.IsTrue((_negativeOne).Seconds() < TimeSpan.Zero);

X10D.Tests/src/Time/HalfTests.cs

@@ -7,7 +7,7 @@ namespace X10D.Tests.Time;
 public class HalfTests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
     {
         Assert.AreEqual(TimeSpan.Zero, 0.0.Milliseconds());
         Assert.AreEqual(TimeSpan.Zero, 0.0.Seconds());
@@ -18,7 +18,7 @@ public class HalfTests
     }
 
     [TestMethod]
-    public void OneShouldBePositive()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(1.0.Milliseconds() > TimeSpan.Zero);
         Assert.IsTrue(1.0.Seconds() > TimeSpan.Zero);
@@ -29,7 +29,7 @@ public class HalfTests
     }
 
     [TestMethod]
-    public void MinusOneShouldBeNegative()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeNegative_GivenMinusOne()
     {
         Assert.IsTrue((-1.0).Milliseconds() < TimeSpan.Zero);
         Assert.IsTrue((-1.0).Seconds() < TimeSpan.Zero);

X10D.Tests/src/Time/Int16Tests.cs

@@ -7,19 +7,31 @@ namespace X10D.Tests.Time;
 public class Int16Tests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void FromUnixTimeMilliseconds_ShouldBeEpoch_GivenZero()
     {
-        Assert.AreEqual(TimeSpan.Zero, ((short)0).Ticks());
-        Assert.AreEqual(TimeSpan.Zero, ((short)0).Milliseconds());
-        Assert.AreEqual(TimeSpan.Zero, ((short)0).Seconds());
-        Assert.AreEqual(TimeSpan.Zero, ((short)0).Minutes());
-        Assert.AreEqual(TimeSpan.Zero, ((short)0).Days());
-        Assert.AreEqual(TimeSpan.Zero, ((short)0).Hours());
-        Assert.AreEqual(TimeSpan.Zero, ((short)0).Weeks());
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), ((short)0).FromUnixTimeMilliseconds());
     }
     
     [TestMethod]
-    public void OneShouldBePositive()
+    public void FromUnixTimeSeconds_ShouldBeEpoch_GivenZero()
+    {
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), ((short)0).FromUnixTimeSeconds());
+    }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeNegative_GivenMinusOne()
+    {
+        Assert.IsTrue(((short)-1).Ticks() < TimeSpan.Zero);
+        Assert.IsTrue(((short)-1).Milliseconds() < TimeSpan.Zero);
+        Assert.IsTrue(((short)-1).Seconds() < TimeSpan.Zero);
+        Assert.IsTrue(((short)-1).Minutes() < TimeSpan.Zero);
+        Assert.IsTrue(((short)-1).Days() < TimeSpan.Zero);
+        Assert.IsTrue(((short)-1).Hours() < TimeSpan.Zero);
+        Assert.IsTrue(((short)-1).Weeks() < TimeSpan.Zero);
+    }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(((short)1).Ticks() > TimeSpan.Zero);
         Assert.IsTrue(((short)1).Milliseconds() > TimeSpan.Zero);
@@ -31,14 +43,14 @@ public class Int16Tests
     }
 
     [TestMethod]
-    public void MinusOneShouldBeNegative()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
     {
-        Assert.IsTrue(((short)-1).Ticks() < TimeSpan.Zero);
-        Assert.IsTrue(((short)-1).Milliseconds() < TimeSpan.Zero);
-        Assert.IsTrue(((short)-1).Seconds() < TimeSpan.Zero);
-        Assert.IsTrue(((short)-1).Minutes() < TimeSpan.Zero);
-        Assert.IsTrue(((short)-1).Days() < TimeSpan.Zero);
-        Assert.IsTrue(((short)-1).Hours() < TimeSpan.Zero);
-        Assert.IsTrue(((short)-1).Weeks() < TimeSpan.Zero);
+        Assert.AreEqual(TimeSpan.Zero, ((short)0).Ticks());
+        Assert.AreEqual(TimeSpan.Zero, ((short)0).Milliseconds());
+        Assert.AreEqual(TimeSpan.Zero, ((short)0).Seconds());
+        Assert.AreEqual(TimeSpan.Zero, ((short)0).Minutes());
+        Assert.AreEqual(TimeSpan.Zero, ((short)0).Days());
+        Assert.AreEqual(TimeSpan.Zero, ((short)0).Hours());
+        Assert.AreEqual(TimeSpan.Zero, ((short)0).Weeks());
     }
 }

X10D.Tests/src/Time/Int32Tests.cs

@@ -7,19 +7,31 @@ namespace X10D.Tests.Time;
 public class Int32Tests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void FromUnixTimeMilliseconds_ShouldBeEpoch_GivenZero()
     {
-        Assert.AreEqual(TimeSpan.Zero, 0.Ticks());
-        Assert.AreEqual(TimeSpan.Zero, 0.Milliseconds());
-        Assert.AreEqual(TimeSpan.Zero, 0.Seconds());
-        Assert.AreEqual(TimeSpan.Zero, 0.Minutes());
-        Assert.AreEqual(TimeSpan.Zero, 0.Days());
-        Assert.AreEqual(TimeSpan.Zero, 0.Hours());
-        Assert.AreEqual(TimeSpan.Zero, 0.Weeks());
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), 0.FromUnixTimeMilliseconds());
     }
 
     [TestMethod]
-    public void OneShouldBePositive()
+    public void FromUnixTimeSeconds_ShouldBeEpoch_GivenZero()
+    {
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), 0.FromUnixTimeSeconds());
+    }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeNegative_GivenMinusOne()
+    {
+        Assert.IsTrue((-1).Ticks() < TimeSpan.Zero);
+        Assert.IsTrue((-1).Milliseconds() < TimeSpan.Zero);
+        Assert.IsTrue((-1).Seconds() < TimeSpan.Zero);
+        Assert.IsTrue((-1).Minutes() < TimeSpan.Zero);
+        Assert.IsTrue((-1).Days() < TimeSpan.Zero);
+        Assert.IsTrue((-1).Hours() < TimeSpan.Zero);
+        Assert.IsTrue((-1).Weeks() < TimeSpan.Zero);
+    }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(1.Ticks() > TimeSpan.Zero);
         Assert.IsTrue(1.Milliseconds() > TimeSpan.Zero);
@@ -31,14 +43,14 @@ public class Int32Tests
     }
 
     [TestMethod]
-    public void MinusOneShouldBeNegative()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
     {
-        Assert.IsTrue((-1).Ticks() < TimeSpan.Zero);
-        Assert.IsTrue((-1).Milliseconds() < TimeSpan.Zero);
-        Assert.IsTrue((-1).Seconds() < TimeSpan.Zero);
-        Assert.IsTrue((-1).Minutes() < TimeSpan.Zero);
-        Assert.IsTrue((-1).Days() < TimeSpan.Zero);
-        Assert.IsTrue((-1).Hours() < TimeSpan.Zero);
-        Assert.IsTrue((-1).Weeks() < TimeSpan.Zero);
+        Assert.AreEqual(TimeSpan.Zero, 0.Ticks());
+        Assert.AreEqual(TimeSpan.Zero, 0.Milliseconds());
+        Assert.AreEqual(TimeSpan.Zero, 0.Seconds());
+        Assert.AreEqual(TimeSpan.Zero, 0.Minutes());
+        Assert.AreEqual(TimeSpan.Zero, 0.Days());
+        Assert.AreEqual(TimeSpan.Zero, 0.Hours());
+        Assert.AreEqual(TimeSpan.Zero, 0.Weeks());
     }
 }

X10D.Tests/src/Time/Int64Tests.cs

@@ -7,19 +7,31 @@ namespace X10D.Tests.Time;
 public class Int64Tests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void FromUnixTimeMilliseconds_ShouldBeEpoch_GivenZero()
     {
-        Assert.AreEqual(TimeSpan.Zero, 0L.Ticks());
-        Assert.AreEqual(TimeSpan.Zero, 0L.Milliseconds());
-        Assert.AreEqual(TimeSpan.Zero, 0L.Seconds());
-        Assert.AreEqual(TimeSpan.Zero, 0L.Minutes());
-        Assert.AreEqual(TimeSpan.Zero, 0L.Days());
-        Assert.AreEqual(TimeSpan.Zero, 0L.Hours());
-        Assert.AreEqual(TimeSpan.Zero, 0L.Weeks());
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), 0L.FromUnixTimeMilliseconds());
     }
 
     [TestMethod]
-    public void OneShouldBePositive()
+    public void FromUnixTimeSeconds_ShouldBeEpoch_GivenZero()
+    {
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), 0L.FromUnixTimeSeconds());
+    }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeNegative_GivenMinusOne()
+    {
+        Assert.IsTrue((-1L).Ticks() < TimeSpan.Zero);
+        Assert.IsTrue((-1L).Milliseconds() < TimeSpan.Zero);
+        Assert.IsTrue((-1L).Seconds() < TimeSpan.Zero);
+        Assert.IsTrue((-1L).Minutes() < TimeSpan.Zero);
+        Assert.IsTrue((-1L).Days() < TimeSpan.Zero);
+        Assert.IsTrue((-1L).Hours() < TimeSpan.Zero);
+        Assert.IsTrue((-1L).Weeks() < TimeSpan.Zero);
+    }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(1L.Ticks() > TimeSpan.Zero);
         Assert.IsTrue(1L.Milliseconds() > TimeSpan.Zero);
@@ -31,14 +43,14 @@ public class Int64Tests
     }
 
     [TestMethod]
-    public void MinusOneShouldBeNegative()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
     {
-        Assert.IsTrue((-1L).Ticks() < TimeSpan.Zero);
-        Assert.IsTrue((-1L).Milliseconds() < TimeSpan.Zero);
-        Assert.IsTrue((-1L).Seconds() < TimeSpan.Zero);
-        Assert.IsTrue((-1L).Minutes() < TimeSpan.Zero);
-        Assert.IsTrue((-1L).Days() < TimeSpan.Zero);
-        Assert.IsTrue((-1L).Hours() < TimeSpan.Zero);
-        Assert.IsTrue((-1L).Weeks() < TimeSpan.Zero);
+        Assert.AreEqual(TimeSpan.Zero, 0L.Ticks());
+        Assert.AreEqual(TimeSpan.Zero, 0L.Milliseconds());
+        Assert.AreEqual(TimeSpan.Zero, 0L.Seconds());
+        Assert.AreEqual(TimeSpan.Zero, 0L.Minutes());
+        Assert.AreEqual(TimeSpan.Zero, 0L.Days());
+        Assert.AreEqual(TimeSpan.Zero, 0L.Hours());
+        Assert.AreEqual(TimeSpan.Zero, 0L.Weeks());
     }
 }

X10D.Tests/src/Time/SByteTests.cs

@@ -8,7 +8,19 @@ namespace X10D.Tests.Time;
 public class SByteTests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void FromUnixTimeMilliseconds_ShouldBeEpoch_GivenZero()
+    {
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), ((sbyte)0).FromUnixTimeMilliseconds());
+    }
+
+    [TestMethod]
+    public void FromUnixTimeSeconds_ShouldBeEpoch_GivenZero()
+    {
+        Assert.AreEqual(new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc), ((sbyte)0).FromUnixTimeSeconds());
+    }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
     {
         Assert.AreEqual(TimeSpan.Zero, ((sbyte)0).Ticks());
         Assert.AreEqual(TimeSpan.Zero, ((sbyte)0).Milliseconds());
@@ -20,7 +32,7 @@ public class SByteTests
     }
 
     [TestMethod]
-    public void OneShouldBePositive()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(((sbyte)1).Ticks() > TimeSpan.Zero);
         Assert.IsTrue(((sbyte)1).Milliseconds() > TimeSpan.Zero);
@@ -32,7 +44,7 @@ public class SByteTests
     }
 
     [TestMethod]
-    public void MinusOneShouldBeNegative()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeNegative_GivenMinusOne()
     {
         Assert.IsTrue(((sbyte)-1).Ticks() < TimeSpan.Zero);
         Assert.IsTrue(((sbyte)-1).Milliseconds() < TimeSpan.Zero);

X10D.Tests/src/Time/SingleTests.cs

@@ -7,7 +7,7 @@ namespace X10D.Tests.Time;
 public class SingleTests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
     {
         Assert.AreEqual(TimeSpan.Zero, 0f.Milliseconds());
         Assert.AreEqual(TimeSpan.Zero, 0f.Seconds());
@@ -18,7 +18,7 @@ public class SingleTests
     }
 
     [TestMethod]
-    public void OneShouldBePositive()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(1f.Milliseconds() > TimeSpan.Zero);
         Assert.IsTrue(1f.Seconds() > TimeSpan.Zero);
@@ -29,7 +29,7 @@ public class SingleTests
     }
 
     [TestMethod]
-    public void MinusOneShouldBeNegative()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeNegative_GivenMinusOne()
     {
         Assert.IsTrue((-1f).Milliseconds() < TimeSpan.Zero);
         Assert.IsTrue((-1f).Seconds() < TimeSpan.Zero);

X10D.Tests/src/Time/TimeSpanTests.cs

@@ -15,26 +15,26 @@ public class TimeSpanTests
     }
 
     [TestMethod]
-    public void AgoShouldBeInThePast()
+    public void Ago_ShouldBeInPast_GivenNow()
     {
         Assert.IsTrue(_timeSpan.Ago() < DateTime.Now);
     }
 
     [TestMethod]
-    public void FromNowShouldBeInThePast()
+    public void FromNow_ShouldBeInFuture_GivenNow()
     {
         Assert.IsTrue(_timeSpan.FromNow() > DateTime.Now);
     }
 
     [TestMethod]
-    public void OneDayAgoShouldBeYesterday()
+    public void Ago_ShouldBeYesterday_GivenYesterday()
     {
         DateTime yesterday = DateTime.Now.AddDays(-1);
         Assert.AreEqual(yesterday.Date, 1.Days().Ago().Date);
     }
 
     [TestMethod]
-    public void OneDayFromNowShouldBeTomorrow()
+    public void FromNow_ShouldBeTomorrow_GivenTomorrow()
     {
         DateTime tomorrow = DateTime.Now.AddDays(1);
         Assert.AreEqual(tomorrow.Date, 1.Days().FromNow().Date);

X10D.Tests/src/Time/UInt16Tests.cs

@@ -8,19 +8,7 @@ namespace X10D.Tests.Time;
 public class UInt16Tests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
-    {
-        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Ticks());
-        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Milliseconds());
-        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Seconds());
-        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Minutes());
-        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Days());
-        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Hours());
-        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Weeks());
-    }
-
-    [TestMethod]
-    public void OneShouldBePositive()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(((ushort)1).Ticks() > TimeSpan.Zero);
         Assert.IsTrue(((ushort)1).Milliseconds() > TimeSpan.Zero);
@@ -30,4 +18,16 @@ public class UInt16Tests
         Assert.IsTrue(((ushort)1).Hours() > TimeSpan.Zero);
         Assert.IsTrue(((ushort)1).Weeks() > TimeSpan.Zero);
     }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
+    {
+        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Ticks());
+        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Milliseconds());
+        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Seconds());
+        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Minutes());
+        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Days());
+        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Hours());
+        Assert.AreEqual(TimeSpan.Zero, ((ushort)0).Weeks());
+    }
 }

X10D.Tests/src/Time/UInt32Tests.cs

@@ -8,19 +8,7 @@ namespace X10D.Tests.Time;
 public class UInt32Tests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
-    {
-        Assert.AreEqual(TimeSpan.Zero, 0U.Ticks());
-        Assert.AreEqual(TimeSpan.Zero, 0U.Milliseconds());
-        Assert.AreEqual(TimeSpan.Zero, 0U.Seconds());
-        Assert.AreEqual(TimeSpan.Zero, 0U.Minutes());
-        Assert.AreEqual(TimeSpan.Zero, 0U.Days());
-        Assert.AreEqual(TimeSpan.Zero, 0U.Hours());
-        Assert.AreEqual(TimeSpan.Zero, 0U.Weeks());
-    }
-
-    [TestMethod]
-    public void OneShouldBePositive()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(1U.Ticks() > TimeSpan.Zero);
         Assert.IsTrue(1U.Milliseconds() > TimeSpan.Zero);
@@ -30,4 +18,16 @@ public class UInt32Tests
         Assert.IsTrue(1U.Hours() > TimeSpan.Zero);
         Assert.IsTrue(1U.Weeks() > TimeSpan.Zero);
     }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
+    {
+        Assert.AreEqual(TimeSpan.Zero, 0U.Ticks());
+        Assert.AreEqual(TimeSpan.Zero, 0U.Milliseconds());
+        Assert.AreEqual(TimeSpan.Zero, 0U.Seconds());
+        Assert.AreEqual(TimeSpan.Zero, 0U.Minutes());
+        Assert.AreEqual(TimeSpan.Zero, 0U.Days());
+        Assert.AreEqual(TimeSpan.Zero, 0U.Hours());
+        Assert.AreEqual(TimeSpan.Zero, 0U.Weeks());
+    }
 }

X10D.Tests/src/Time/UInt64Tests.cs

@@ -8,19 +8,7 @@ namespace X10D.Tests.Time;
 public class UInt64Tests
 {
     [TestMethod]
-    public void ZeroShouldBeZeroTimeSpan()
-    {
-        Assert.AreEqual(TimeSpan.Zero, 0UL.Ticks());
-        Assert.AreEqual(TimeSpan.Zero, 0UL.Milliseconds());
-        Assert.AreEqual(TimeSpan.Zero, 0UL.Seconds());
-        Assert.AreEqual(TimeSpan.Zero, 0UL.Minutes());
-        Assert.AreEqual(TimeSpan.Zero, 0UL.Days());
-        Assert.AreEqual(TimeSpan.Zero, 0UL.Hours());
-        Assert.AreEqual(TimeSpan.Zero, 0UL.Weeks());
-    }
-
-    [TestMethod]
-    public void OneShouldBePositive()
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBePositive_GivenOne()
     {
         Assert.IsTrue(1UL.Ticks() > TimeSpan.Zero);
         Assert.IsTrue(1UL.Milliseconds() > TimeSpan.Zero);
@@ -30,4 +18,16 @@ public class UInt64Tests
         Assert.IsTrue(1UL.Hours() > TimeSpan.Zero);
         Assert.IsTrue(1UL.Weeks() > TimeSpan.Zero);
     }
+
+    [TestMethod]
+    public void TicksMillisecondsSecondsMinutesDaysHoursWeeks_ShouldBeZero_GivenZero()
+    {
+        Assert.AreEqual(TimeSpan.Zero, 0UL.Ticks());
+        Assert.AreEqual(TimeSpan.Zero, 0UL.Milliseconds());
+        Assert.AreEqual(TimeSpan.Zero, 0UL.Seconds());
+        Assert.AreEqual(TimeSpan.Zero, 0UL.Minutes());
+        Assert.AreEqual(TimeSpan.Zero, 0UL.Days());
+        Assert.AreEqual(TimeSpan.Zero, 0UL.Hours());
+        Assert.AreEqual(TimeSpan.Zero, 0UL.Weeks());
+    }
 }

X10D/src/BooleanExtensions/BooleanExtensions.cs

@@ -1,36 +0,0 @@
-namespace X10D;
-
-/// <summary>
-///     Extension methods for <see cref="bool" />.
-/// </summary>
-public static class BooleanExtensions
-{
-    /// <summary>
-    ///     Returns the current Boolean value as a byte array.
-    /// </summary>
-    /// <param name="value">The Boolean value.</param>
-    /// <returns>A byte array with length 1.</returns>
-    /// <example>
-    ///     The following example converts the bit patterns of <see cref="bool" /> values to <see cref="byte" /> arrays.
-    ///     <code lang="csharp">
-    /// bool[] values = { true, false };
-    ///
-    /// Console.WriteLine("{0,10}{1,16}\n", "Boolean", "Bytes");
-    /// foreach (var value in values)
-    /// {
-    ///     byte[] bytes = value.GetBytes();
-    ///     Console.WriteLine("{0,10}{1,16}", value, bytes.AsString());
-    /// }
-    ///
-    /// // The example displays the following output:
-    /// //        Boolean           Bytes
-    /// //
-    /// //           True              01
-    /// //          False              00
-    /// </code>
-    /// </example>
-    public static byte[] GetBytes(this bool value)
-    {
-        return BitConverter.GetBytes(value);
-    }
-}

X10D/src/ByteExtensions/ByteExtensions.cs

@@ -1,17 +0,0 @@
-namespace X10D;
-
-/// <summary>
-///     Extension methods for <see cref="byte" />.
-/// </summary>
-public static class ByteExtensions
-{
-    /// <summary>
-    ///     Returns the current 8-bit unsigned integer value as an array of bytes.
-    /// </summary>
-    /// <param name="value">The number to convert.</param>
-    /// <returns>An array of bytes with length 1.</returns>
-    public static byte[] GetBytes(this byte value)
-    {
-        return new[] { value };
-    }
-}

X10D/src/DoubleExtensions/DoubleExtensions.cs

@@ -1,17 +0,0 @@
-namespace X10D;
-
-/// <summary>
-///     Extension methods for <see cref="double" />.
-/// </summary>
-public static class DoubleExtensions
-{
-    /// <summary>
-    ///     Converts the <see cref="double" /> to a <see cref="byte" />[].
-    /// </summary>
-    /// <param name="number">The number to convert.</param>
-    /// <returns>Returns a <see cref="byte" />[].</returns>
-    public static byte[] GetBytes(this double number)
-    {
-        return BitConverter.GetBytes(number);
-    }
-}

X10D/src/IO/BooleanExtensions.cs

@@ -0,0 +1,28 @@
+namespace X10D;
+
+/// <summary>
+///     Extension methods for <see cref="bool" />.
+/// </summary>
+public static class BooleanExtensions
+{
+    /// <summary>
+    ///     Returns the current boolean value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The value to convert.</param>
+    /// <returns>An array of bytes with length 1.</returns>
+    public static byte[] GetBytes(this bool value)
+    {
+        return BitConverter.GetBytes(value);
+    }
+
+    /// <summary>
+    ///     Converts a <see cref="bool" /> into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="bool" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="bool" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this bool value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+}

X10D/src/IO/ByteExtensions.cs

@@ -0,0 +1,36 @@
+using X10D.Core;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="byte" />.
+/// </summary>
+public static class ByteExtensions
+{
+    /// <summary>
+    ///     Returns the current 8-bit unsigned integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 1.</returns>
+    public static byte[] GetBytes(this byte value)
+    {
+        return value.AsArray();
+    }
+
+    /// <summary>
+    ///     Converts a <see cref="byte" /> into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="byte" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="byte" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this byte value, Span<byte> destination)
+    {
+        if (destination.Length < 1)
+        {
+            return false;
+        }
+
+        destination[0] = value;
+        return true;
+    }
+}

X10D/src/IO/DoubleExtensions.cs

@@ -0,0 +1,59 @@
+using System.Buffers.Binary;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="double" />.
+/// </summary>
+public static class DoubleExtensions
+{
+    /// <summary>
+    ///     Returns the current double-precision floating-point value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 8.</returns>
+    public static byte[] GetBytes(this double value)
+    {
+        Span<byte> buffer = stackalloc byte[8];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Returns the current double-precision floating-point value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns>An array of bytes with length 8.</returns>
+    public static byte[] GetBytes(this double value, Endianness endianness)
+    {
+        Span<byte> buffer = stackalloc byte[8];
+        value.TryWriteBytes(buffer, endianness);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current double-precision floating-point into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="double" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="double" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this double value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+
+    /// <summary>
+    ///     Converts the current double-precision floating-point into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="double" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="double" />.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this double value, Span<byte> destination, Endianness endianness)
+    {
+        return endianness == Endianness.BigEndian
+            ? BinaryPrimitives.TryWriteDoubleBigEndian(destination, value)
+            : BinaryPrimitives.TryWriteDoubleLittleEndian(destination, value);
+    }
+}

X10D/src/IO/Int16Extensions.cs

@@ -0,0 +1,59 @@
+using System.Buffers.Binary;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="short" />.
+/// </summary>
+public static class Int16Extensions
+{
+    /// <summary>
+    ///     Returns the current 16-bit signed integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 2.</returns>
+    public static byte[] GetBytes(this short value)
+    {
+        Span<byte> buffer = stackalloc byte[2];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+    
+    /// <summary>
+    ///     Returns the current 16-bit signed integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns>An array of bytes with length 2.</returns>
+    public static byte[] GetBytes(this short value, Endianness endianness)
+    {
+        Span<byte> buffer = stackalloc byte[2];
+        value.TryWriteBytes(buffer, endianness);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current 16-bit signed integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="short" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="short" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this short value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+
+    /// <summary>
+    ///     Converts the current 16-bit signed integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="short" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="short" />.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this short value, Span<byte> destination, Endianness endianness)
+    {
+        return endianness == Endianness.BigEndian
+            ? BinaryPrimitives.TryWriteInt16BigEndian(destination, value)
+            : BinaryPrimitives.TryWriteInt16LittleEndian(destination, value);
+    }
+}

X10D/src/IO/Int32Extensions.cs

@@ -0,0 +1,59 @@
+using System.Buffers.Binary;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="int" />.
+/// </summary>
+public static class Int32Extensions
+{
+    /// <summary>
+    ///     Returns the current 32-bit signed integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 4.</returns>
+    public static byte[] GetBytes(this int value)
+    {
+        Span<byte> buffer = stackalloc byte[4];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+    
+    /// <summary>
+    ///     Returns the current 32-bit signed integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns>An array of bytes with length 4.</returns>
+    public static byte[] GetBytes(this int value, Endianness endianness)
+    {
+        Span<byte> buffer = stackalloc byte[4];
+        value.TryWriteBytes(buffer, endianness);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current 32-bit signed integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="int" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="int" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this int value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+
+    /// <summary>
+    ///     Converts the current 32-bit signed integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="int" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="int" />.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this int value, Span<byte> destination, Endianness endianness)
+    {
+        return endianness == Endianness.BigEndian
+            ? BinaryPrimitives.TryWriteInt32BigEndian(destination, value)
+            : BinaryPrimitives.TryWriteInt32LittleEndian(destination, value);
+    }
+}

X10D/src/IO/Int64Extensions.cs

@@ -0,0 +1,59 @@
+using System.Buffers.Binary;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="long" />.
+/// </summary>
+public static class Int64Extensions
+{
+    /// <summary>
+    ///     Returns the current 64-bit signed integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 8.</returns>
+    public static byte[] GetBytes(this long value)
+    {
+        Span<byte> buffer = stackalloc byte[8];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+    
+    /// <summary>
+    ///     Returns the current 64-bit signed integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns>An array of bytes with length 8.</returns>
+    public static byte[] GetBytes(this long value, Endianness endianness)
+    {
+        Span<byte> buffer = stackalloc byte[8];
+        value.TryWriteBytes(buffer, endianness);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current 64-bit signed integer a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="long" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="long" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this long value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+
+    /// <summary>
+    ///     Converts the current 64-bit signed integer a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="long" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="long" />.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this long value, Span<byte> destination, Endianness endianness)
+    {
+        return endianness == Endianness.BigEndian
+            ? BinaryPrimitives.TryWriteInt64BigEndian(destination, value)
+            : BinaryPrimitives.TryWriteInt64LittleEndian(destination, value);
+    }
+}

X10D/src/IO/SByteExtensions.cs

@@ -0,0 +1,37 @@
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="sbyte" />.
+/// </summary>
+[CLSCompliant(false)]
+public static class SByteExtensions
+{
+    /// <summary>
+    ///     Returns the current 16-bit unsigned integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 1.</returns>
+    public static byte[] GetBytes(this sbyte value)
+    {
+        Span<byte> buffer = stackalloc byte[1];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current 16-bit unsigned integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="sbyte" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="sbyte" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this sbyte value, Span<byte> destination)
+    {
+        if (destination.Length < 1)
+        {
+            return false;
+        }
+
+        destination[0] = (byte)value;
+        return true;
+    }
+}

X10D/src/IO/SingleExtensions.cs

@@ -0,0 +1,59 @@
+using System.Buffers.Binary;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="float" />.
+/// </summary>
+public static class SingleExtensions
+{
+    /// <summary>
+    ///     Returns the current single-precision floating-point value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 4.</returns>
+    public static byte[] GetBytes(this float value)
+    {
+        Span<byte> buffer = stackalloc byte[4];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+    
+    /// <summary>
+    ///     Returns the current single-precision floating-point value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns>An array of bytes with length 4.</returns>
+    public static byte[] GetBytes(this float value, Endianness endianness)
+    {
+        Span<byte> buffer = stackalloc byte[4];
+        value.TryWriteBytes(buffer, endianness);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current single-precision floating-point into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="float" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="float" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this float value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+
+    /// <summary>
+    ///     Converts the current single-precision floating-point into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="float" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="float" />.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this float value, Span<byte> destination, Endianness endianness)
+    {
+        return endianness == Endianness.BigEndian
+            ? BinaryPrimitives.TryWriteSingleBigEndian(destination, value)
+            : BinaryPrimitives.TryWriteSingleLittleEndian(destination, value);
+    }
+}

X10D/src/IO/UInt16Extensions.cs

@@ -0,0 +1,60 @@
+using System.Buffers.Binary;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="ushort" />.
+/// </summary>
+[CLSCompliant(false)]
+public static class UInt16Extensions
+{
+    /// <summary>
+    ///     Returns the current 16-bit unsigned integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 2.</returns>
+    public static byte[] GetBytes(this ushort value)
+    {
+        Span<byte> buffer = stackalloc byte[2];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+    
+    /// <summary>
+    ///     Returns the current 16-bit unsigned integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns>An array of bytes with length 2.</returns>
+    public static byte[] GetBytes(this ushort value, Endianness endianness)
+    {
+        Span<byte> buffer = stackalloc byte[2];
+        value.TryWriteBytes(buffer, endianness);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current 16-bit unsigned integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="ushort" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="ushort" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this ushort value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+
+    /// <summary>
+    ///     Converts the current 16-bit unsigned integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="ushort" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="ushort" />.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this ushort value, Span<byte> destination, Endianness endianness)
+    {
+        return endianness == Endianness.BigEndian
+            ? BinaryPrimitives.TryWriteUInt16BigEndian(destination, value)
+            : BinaryPrimitives.TryWriteUInt16LittleEndian(destination, value);
+    }
+}

X10D/src/IO/UInt32Extensions.cs

@@ -0,0 +1,60 @@
+using System.Buffers.Binary;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="uint" />.
+/// </summary>
+[CLSCompliant(false)]
+public static class UInt32Extensions
+{
+    /// <summary>
+    ///     Returns the current 32-bit unsigned integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 4.</returns>
+    public static byte[] GetBytes(this uint value)
+    {
+        Span<byte> buffer = stackalloc byte[4];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Returns the current 32-bit unsigned integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns>An array of bytes with length 4.</returns>
+    public static byte[] GetBytes(this uint value, Endianness endianness)
+    {
+        Span<byte> buffer = stackalloc byte[4];
+        value.TryWriteBytes(buffer, endianness);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current 32-bit unsigned integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="uint" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="uint" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this uint value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+
+    /// <summary>
+    ///     Converts the current 32-bit unsigned integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="uint" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="uint" />.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this uint value, Span<byte> destination, Endianness endianness)
+    {
+        return endianness == Endianness.BigEndian
+            ? BinaryPrimitives.TryWriteUInt32BigEndian(destination, value)
+            : BinaryPrimitives.TryWriteUInt32LittleEndian(destination, value);
+    }
+}

X10D/src/IO/UInt64Extensions.cs

@@ -0,0 +1,60 @@
+using System.Buffers.Binary;
+
+namespace X10D.IO;
+
+/// <summary>
+///     IO-related extension methods for <see cref="ulong" />.
+/// </summary>
+[CLSCompliant(false)]
+public static class UInt64Extensions
+{
+    /// <summary>
+    ///     Returns the current 64-bit unsigned integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <returns>An array of bytes with length 8.</returns>
+    public static byte[] GetBytes(this ulong value)
+    {
+        Span<byte> buffer = stackalloc byte[8];
+        value.TryWriteBytes(buffer);
+        return buffer.ToArray();
+    }
+    
+    /// <summary>
+    ///     Returns the current 64-bit unsigned integer value as an array of bytes.
+    /// </summary>
+    /// <param name="value">The number to convert.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns>An array of bytes with length 8.</returns>
+    public static byte[] GetBytes(this ulong value, Endianness endianness)
+    {
+        Span<byte> buffer = stackalloc byte[8];
+        value.TryWriteBytes(buffer, endianness);
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    ///     Converts the current 64-bit unsigned integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="ulong" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="ulong" />.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this ulong value, Span<byte> destination)
+    {
+        return BitConverter.TryWriteBytes(destination, value);
+    }
+
+    /// <summary>
+    ///     Converts the current 64-bit unsigned integer into a span of bytes.
+    /// </summary>
+    /// <param name="value">The <see cref="ulong" /> value.</param>
+    /// <param name="destination">When this method returns, the bytes representing the converted <see cref="ulong" />.</param>
+    /// <param name="endianness">The endianness with which to write the bytes.</param>
+    /// <returns><see langword="true" /> if the conversion was successful; otherwise, <see langword="false" />.</returns>
+    public static bool TryWriteBytes(this ulong value, Span<byte> destination, Endianness endianness)
+    {
+        return endianness == Endianness.BigEndian
+            ? BinaryPrimitives.TryWriteUInt64BigEndian(destination, value)
+            : BinaryPrimitives.TryWriteUInt64LittleEndian(destination, value);
+    }
+}

X10D/src/Int16Extensions/Int16Extensions.cs

@@ -7,16 +7,6 @@ namespace X10D;
 /// </summary>
 public static class Int16Extensions
 {
-    /// <summary>
-    ///     Returns the current 16-bit signed integer value as an array of bytes.
-    /// </summary>
-    /// <param name="value">The number to convert.</param>
-    /// <returns>An array of bytes with length 2.</returns>
-    public static byte[] GetBytes(this short value)
-    {
-        return BitConverter.GetBytes(value);
-    }
-
     /// <summary>
     ///     Returns an enumerable collection of 16-bit signed integers that range from the current value to a specified value.
     /// </summary>

X10D/src/Int32Extensions/Int32Extensions.cs

@@ -70,16 +70,6 @@ public static class Int32Extensions
         return ((float)value).DegreesToRadians();
     }
 
-    /// <summary>
-    ///     Returns the current 32-bit signed integer value as an array of bytes.
-    /// </summary>
-    /// <param name="value">The number to convert.</param>
-    /// <returns>An array of bytes with length 4.</returns>
-    public static byte[] GetBytes(this int value)
-    {
-        return BitConverter.GetBytes(value);
-    }
-
     /// <summary>
     ///     Returns an enumerable collection of 32-bit signed integers that range from the current value to a specified value.
     /// </summary>

X10D/src/Int64Extensions/Int64Extensions.cs

@@ -7,16 +7,6 @@ namespace X10D;
 /// </summary>
 public static class Int64Extensions
 {
-    /// <summary>
-    ///     Returns the current 64-bit signed integer value as an array of bytes.
-    /// </summary>
-    /// <param name="value">The number to convert.</param>
-    /// <returns>An array of bytes with length 8.</returns>
-    public static byte[] GetBytes(this long value)
-    {
-        return BitConverter.GetBytes(value);
-    }
-
     /// <summary>
     ///     Returns the multiplicative persistence of a specified value.
     /// </summary>

X10D/src/SingleExtensions/SingleExtensions.cs

@@ -1,17 +0,0 @@
-namespace X10D;
-
-/// <summary>
-///     Extension methods for <see cref="float" />.
-/// </summary>
-public static class SingleExtensions
-{
-    /// <summary>
-    ///     Converts the <see cref="float" /> to a <see cref="byte" />[].
-    /// </summary>
-    /// <param name="number">The number to convert.</param>
-    /// <returns>Returns a <see cref="byte" />[].</returns>
-    public static byte[] GetBytes(this float number)
-    {
-        return BitConverter.GetBytes(number);
-    }
-}

X10D/src/Time/ByteExtensions.cs

@@ -5,6 +5,44 @@
 /// </summary>
 public static class ByteExtensions
 {
+    /// <summary>
+    ///     Converts a Unix time expressed as the number of milliseconds that have elapsed since 1970-01-01T00:00:00Z to a
+    ///     <see cref="DateTimeOffset" /> value.
+    /// </summary>
+    /// <param name="value">
+    ///     A Unix time, expressed as the number of milliseconds that have elapsed since 1970-01-01T00:00:00Z (January 1,
+    ///     1970, at 12:00 AM UTC). For Unix times before this date, its value is negative.
+    /// </param>
+    /// <returns>A date and time value that represents the same moment in time as the Unix time.</returns>
+    /// <exception cref="ArgumentOutOfRangeException">
+    ///     <para><paramref name="value" /> is less than -62,135,596,800,000.</para>
+    ///     -or-
+    ///     <para><paramref name="value" /> is greater than 253,402,300,799,999.</para>
+    /// </exception>
+    public static DateTimeOffset FromUnixTimeMilliseconds(this byte value)
+    {
+        return DateTimeOffset.FromUnixTimeMilliseconds(value);
+    }
+
+    /// <summary>
+    ///     Converts a Unix time expressed as the number of seconds that have elapsed since 1970-01-01T00:00:00Z to a
+    ///     <see cref="DateTimeOffset" /> value.
+    /// </summary>
+    /// <param name="value">
+    ///     A Unix time, expressed as the number of seconds that have elapsed since 1970-01-01T00:00:00Z (January 1, 1970, at
+    ///     12:00 AM UTC). For Unix times before this date, its value is negative.
+    /// </param>
+    /// <returns>A date and time value that represents the same moment in time as the Unix time.</returns>
+    /// <exception cref="ArgumentOutOfRangeException">
+    ///     <para><paramref name="value" /> is less than -62,135,596,800.</para>
+    ///     -or-
+    ///     <para><paramref name="value" /> is greater than 253,402,300,799.</para>
+    /// </exception>
+    public static DateTimeOffset FromUnixTimeSeconds(this byte value)
+    {
+        return DateTimeOffset.FromUnixTimeSeconds(value);
+    }
+
     /// <summary>
     ///     Returns a <see cref="TimeSpan" /> that represents this value as the number of ticks.
     /// </summary>

X10D/src/Time/SByteExtensions.cs

@@ -6,6 +6,44 @@
 [CLSCompliant(false)]
 public static class SByteExtensions
 {
+    /// <summary>
+    ///     Converts a Unix time expressed as the number of milliseconds that have elapsed since 1970-01-01T00:00:00Z to a
+    ///     <see cref="DateTimeOffset" /> value.
+    /// </summary>
+    /// <param name="value">
+    ///     A Unix time, expressed as the number of milliseconds that have elapsed since 1970-01-01T00:00:00Z (January 1,
+    ///     1970, at 12:00 AM UTC). For Unix times before this date, its value is negative.
+    /// </param>
+    /// <returns>A date and time value that represents the same moment in time as the Unix time.</returns>
+    /// <exception cref="ArgumentOutOfRangeException">
+    ///     <para><paramref name="value" /> is less than -62,135,596,800,000.</para>
+    ///     -or-
+    ///     <para><paramref name="value" /> is greater than 253,402,300,799,999.</para>
+    /// </exception>
+    public static DateTimeOffset FromUnixTimeMilliseconds(this sbyte value)
+    {
+        return DateTimeOffset.FromUnixTimeMilliseconds(value);
+    }
+
+    /// <summary>
+    ///     Converts a Unix time expressed as the number of seconds that have elapsed since 1970-01-01T00:00:00Z to a
+    ///     <see cref="DateTimeOffset" /> value.
+    /// </summary>
+    /// <param name="value">
+    ///     A Unix time, expressed as the number of seconds that have elapsed since 1970-01-01T00:00:00Z (January 1, 1970, at
+    ///     12:00 AM UTC). For Unix times before this date, its value is negative.
+    /// </param>
+    /// <returns>A date and time value that represents the same moment in time as the Unix time.</returns>
+    /// <exception cref="ArgumentOutOfRangeException">
+    ///     <para><paramref name="value" /> is less than -62,135,596,800.</para>
+    ///     -or-
+    ///     <para><paramref name="value" /> is greater than 253,402,300,799.</para>
+    /// </exception>
+    public static DateTimeOffset FromUnixTimeSeconds(this sbyte value)
+    {
+        return DateTimeOffset.FromUnixTimeSeconds(value);
+    }
+
     /// <summary>
     ///     Returns a <see cref="TimeSpan" /> that represents this value as the number of ticks.
     /// </summary>