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# X10D
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Extension methods on crack
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## Extension methods on crack
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## About
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X10D (pronounced *extend*), is a collection of class libraries that provide various .NET extension methods, including extension methods for Unity, Windows Forms and System.Drawing.
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[<img src="https://img.shields.io/github/workflow/status/oliverbooth/X10D/.NET%20Core">](https://github.com/oliverbooth/X10D/actions?query=workflow%3A%22.NET+Core%22)
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[<img src="https://img.shields.io/github/issues/oliverbooth/X10D">](https://github.com/oliverbooth/X10D/issues)
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[<img src="https://img.shields.io/nuget/v/X10D">](https://www.nuget.org/packages/X10D/)
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[<img src="https://img.shields.io/github/license/oliverbooth/X10D">](https://github.com/oliverbooth/X10D/blob/master/LICENSE.md)
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### About
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X10D (pronounced *extend*), is a class library that provides extension methods for numerous .NET types. The purpose of this library is to simplify a codebase by reducing the need for repeated code when performing common operations. Simplify your codebase. Take advantage of .NET. Use extension methods.
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*(I'm also [dogfooding](https://deviq.com/dogfooding/) this library, so there's that.)*
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### Table of contents
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- [Install](#install)
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- [Features](#features)
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- [Numeric](#numeric)
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- [String](#string)
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- [DateTime](#datetime)
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- [Enumerable](#enumerable)
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- [Enum](#enum)
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- [Conversion](#conversion)
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- [Random](#random)
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- [License](#license)
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## Extended Classes
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You can find the list of classes that have extension methods by viewing the `README.md` file in any of the respective library folders.
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## Install
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Install X10D with NuGet via the following command:
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```ps
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Install-Package X10D -Version 2.0.0
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```
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or by downloading the [latest release](https://github.com/oliverbooth/X10D/releases/latest) from this repository.
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## Features
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### Numeric extensions
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> 👍 ProTip: *Most* of the extensions available for `int` will also exist for `short`, `long`, and their unsigned counterparts!
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#### `bool` <-> `int`
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Convert a `bool` to an `int` by using `ToInt32`. The value returned is 1 if the input is `true`, and 0 if it's `false`.
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```cs
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bool b = true;
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int i = b.ToInt32(); // 1
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```
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The same also works in reverse. Using `ToBoolean` on an `int` will return `false` if the input is 0, and `true`if the input is anything else.
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```cs
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int zero = 0;
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long nonZero = 1;
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bool b1 = zero.ToBoolean(); // false
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bool b2 = nonZero.ToBoolean(); // true
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```
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#### Between
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Determine if a value is between other values using `Between` like so:
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```cs
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int i = 3;
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if (i.Between(2, 4))
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{
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// i is between 2 and 4!
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}
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```
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Since the signature of this method is defined with a generic constraint of `IComparable<T>`, this will also work for any object that is `IComparable<T>` - not just numeric types!
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```cs
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bool Between<T>(this T actual, T lower, T upper) where T : IComparable<T>
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```
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#### IsEven (*and IsOdd*)
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As the names suggest, this method determines if the input value is evenly divisible by 2.
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```cs
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int i = 5;
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bool b = i.IsEven(); // false
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```
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There is also an `IsOdd` extension method, which will return the opposite of that returned by `IsEven`.
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#### IsPrime
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Determine if an integral is a prime number by using `IsPrime`.
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```cs
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bool b = 43.IsPrime(); // true
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```
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#### Clamp
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Clamp a value between an upper and lower bound
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```cs
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int i = 5.Clamp(0, 3); // 3
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```
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#### Convert degrees <-> radians
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Easily convert between radians and degrees
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```cs
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double rad = 2 * Math.PI;
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double deg = rad.RadiansToDegrees(); // 360
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rad = deg.DegreesToRadians(); // back to 2*pi
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```
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#### Round
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Round a value to the nearest whole number:
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```cs
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var d = 2.75;
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var rounded = d.Round(); // 3
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```
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Or specify a value to have it round to the nearest multiple of `x`:
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```cs
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double a = 8.0.Round(10); // 10
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double b = 2.0.Round(10); // 0
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```
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### String
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#### Repeat value
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Repeat a string or a char a specific number of times using `Repeat`
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```cs
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var c = '-';
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var str = "foo";
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string repeatedC = c.Repeat(10); // ----------
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string repeatedStr = str.Repeat(5); // foofoofoofoofoo
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```
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#### Base-64 encode/decode
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```cs
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var base64 = "Hello World".Base64Encode(); // SGVsbG8gV29ybGQ=
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var str = "SGVsbG8gV29ybGQ=".Base64Decode(); // Hello World
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```
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### DateTime
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#### Age
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Get a rounded integer representing the number of years since a given date. i.e. easily calculate someone's age:
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```cs
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var dateOfBirth = new DateTime(1960, 7, 16);
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int age = dateOfBirth.Age(); // the age as of today
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```
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You can also specify a date at which to stop counting the years, by passing an `asOf` date:
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```cs
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var dateOfBirth = new DateTime(1960, 7, 16);
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int age = dateOfBirth.Age(new DateTime(1970, 7, 16)); // 10, the age as of 1970
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```
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#### To/From Unix Timestamp
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Convert to/from a Unix timestamp represented in seconds using `FromUnixTimestamp` on a numeric type, and `ToUnixTimestamp` on a `DateTime`.
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```cs
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long sec = 1587223415;
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DateTime time = sec.FromUnixTimestamp(); // 2020-04-18 15:23:35
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long unix = time.ToUnixTimestamp();
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```
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or represent it with milliseconds by passing `true` for the `isMillis` argument:
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```cs
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long millis = 1587223415500;
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DateTime time = millis.FromUnixTimestamp(true); // 2020-04-18 15:23:35.50
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long unix = time.ToUnixTimestamp(true);
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```
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#### Get first/last day of month
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Get the first or last day of the month by using `FirstDayOfMonth` and `LastDayOfMonth`
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```cs
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var dt = new DateTime(2016, 2, 4);
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DateTime first = dt.FirstDayOfMonth(); // 2016-02-01
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DateTime last = dt.LastDayOfMonth(); // 2016-02-29 (2016 is a leap year)
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```
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You can also use `First` or `Last` to get the first or final occurrence of a specific day of the week in a given month:
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```cs
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var dt = new DateTime(2019, 4, 14);
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DateTime theLastFriday = dt.Last(DayOfWeek.Friday); // 2019-04-24
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DateTime theLastThursday = dt.Last(DayOfWeek.Thursday); // 2019-04-40
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```
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### Enumerable
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#### Split into chunks
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Split an `IEnumerable<T>` into an `IEnumerable<IEnumerable<T>>`, essentially "chunking" the original IEnumerable into a specific size
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```cs
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var arr = new int[] { 1, 2, 3, 4, 5, 6, 7, 8 };
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var chunks = arr.Split(2); // split into chunks of 2
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foreach (var chunk in chunks)
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{
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Console.WriteLine(string.Join(", ", chunk));
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}
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// Output:
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// 1, 2
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// 3, 4
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// 5, 6
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// 7, 8
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```
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This also works for `string`:
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```cs
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var str = "Hello World";
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var chunks = str.Split(2); // split string into chunks of 2
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foreach (var chunk in chunks)
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{
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Console.WriteLine(string.Join(string.Empty, chunk));
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}
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// Output:
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// He
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// ll
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// o <-- space is included
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// Wo
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// rl
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// d <-- no space! end of string
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```
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### Enum
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#### Parse string into enum
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You can use the `EnumParse` method to convert a string into a value from an enum, while optionally ignoring case:
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```cs
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enum Number
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{
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Zero,
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One,
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Two,
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Three,
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}
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Number num = "two".EnumParse<Number>(true); // num == Number.Two
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```
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#### `Next` / `Previous` enum cycling
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Cycle through the values in an enum with `Next` and `Previous`:
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```cs
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Number two = Number.Two;
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Number one = two.Previous();
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Number three = two.Next();
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```
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### Conversion
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Easily convert between types using `To`, `ToOrNull`, `ToOrDefault`, or `ToOrOther`, thereby shortening the call to `Convert.ChangeType` or `Convert.ToX`:
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```CS
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int i = "43".To<int>();
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int j = "a".ToOrDefault<int>(); // 0
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int k = "a".ToOrOther<int>(100); // 100
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```
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### Random
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Do more with Random including flip a coin, randomly select an element in an array, or shuffle the array entirely.
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```cs
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var random = new Random();
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// flip a coin
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bool heads = random.CoinToss();
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// randomly choose an item
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var arr = new int[] { 1, 2, 3, 4 };
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var item = random.OneOf(arr);
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// shuffle an array or list
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var shuffled = arr.Shuffle(random);
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```
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## License
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X10D is released under the MIT License. See [here](https://github.com/oliverbooth/X10D/blob/master/LICENSE.md) for more details.
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