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https://github.com/oliverbooth/X10D
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Add Array.Fill
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@ -15,8 +15,7 @@ public class ArrayTests
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args.Clear();
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int[] comparison = Enumerable.Repeat(0, args.Length).ToArray();
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CollectionAssert.AreEqual(args, comparison, $"{string.Join(", ", args)} is not equal to" +
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$"{string.Join(", ", comparison)}. ");
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CollectionAssert.AreEqual(args, comparison);
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}
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[TestMethod]
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@ -25,4 +24,24 @@ public class ArrayTests
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int[]? array = null;
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Assert.ThrowsException<ArgumentNullException>(array!.Clear);
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}
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[TestMethod]
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[DataRow]
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[DataRow(1)]
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[DataRow(1, 2, 3)]
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[DataRow(1, 2, 3, 4, 5)]
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public void Fill(params int[] args)
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{
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args.Fill(1);
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int[] comparison = Enumerable.Repeat(1, args.Length).ToArray();
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CollectionAssert.AreEqual(args, comparison);
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}
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[TestMethod]
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public void FillNull()
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{
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int[]? array = null;
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Assert.ThrowsException<ArgumentNullException>(() => array!.Fill(0));
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}
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}
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@ -86,4 +86,51 @@ public static class ArrayExtensions
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Array.Clear(array, index, length);
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}
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/// <summary>
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/// Assigns the given value to each element of the array.
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/// </summary>
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/// <param name="array">The array to be filled.</param>
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/// <param name="value">The value to assign to each array element.</param>
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/// <typeparam name="T">The type of the elements in the array.</typeparam>
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/// <exception cref="ArgumentNullException"><paramref name="array" /> is <see langword="null" />.</exception>
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public static void Fill<T>(this T?[] array, T value)
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{
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if (array is null)
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{
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throw new ArgumentNullException(nameof(array));
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}
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if (array.Length == 0)
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{
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return;
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}
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Array.Fill(array, value);
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}
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/// <summary>
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/// Assigns the given value to the elements of the array which are within the range of <paramref name="startIndex" />
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/// (inclusive) and the next <paramref name="count" /> number of indices.
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/// </summary>
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/// <param name="array">The array to be filled.</param>
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/// <param name="value">The value to assign to each array element.</param>
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/// <param name="startIndex">A 32-bit integer that represents the index in the array at which filling begins.</param>
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/// <param name="count">The number of elements to fill.</param>
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/// <typeparam name="T">The type of the elements in the array.</typeparam>
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/// <exception cref="ArgumentNullException"><paramref name="array" /> is <see langword="null" />.</exception>
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public static void Fill<T>(this T?[] array, T value, int startIndex, int count)
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{
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if (array is null)
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{
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throw new ArgumentNullException(nameof(array));
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}
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if (count == 0 || array.Length == 0)
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{
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return;
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}
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Array.Fill(array, value, startIndex, count);
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}
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}
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