Browse Source
Replace ICSharpCode.SharpDevelop.Func<...> with System.Func<...>; use System.Linq.Enumerable instead of the ICSharpCode.SharpDevelop.Linq helper class. git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@2628 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61shortcuts
Daniel Grunwald
19 years ago
46 changed files with 132 additions and 270 deletions
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// <file>
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// <copyright see="prj:///doc/copyright.txt"/>
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// <license see="prj:///doc/license.txt"/>
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// <owner name="Daniel Grunwald" email="daniel@danielgrunwald.de"/>
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// <version>$Revision$</version>
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// </file>
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using System; |
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using System.Collections; |
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using System.Collections.ObjectModel; |
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using System.Collections.Generic; |
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namespace ICSharpCode.SharpDevelop |
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{ |
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/// <summary>
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/// Extension methods used in SharpDevelop.
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/// </summary>
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public static class ExtensionMethods |
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{ |
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/// <summary>
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/// Applies an action to all elements in the input.
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/// </summary>
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public static void Apply<T>(this IEnumerable<T> input, Action<T> action) |
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{ |
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if (input == null) |
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throw new ArgumentNullException("input"); |
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foreach (T element in input) { |
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action(element); |
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} |
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} |
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public static ReadOnlyCollection<T> AsReadOnly<T>(this T[] arr) |
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{ |
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return Array.AsReadOnly(arr); |
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} |
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} |
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} |
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@ -1,184 +0,0 @@ |
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// <file>
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// <copyright see="prj:///doc/copyright.txt"/>
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// <license see="prj:///doc/license.txt"/>
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// <owner name="Daniel Grunwald" email="daniel@danielgrunwald.de"/>
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// <version>$Revision$</version>
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// </file>
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using System; |
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using System.Collections; |
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using System.Collections.Generic; |
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namespace ICSharpCode.SharpDevelop |
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{ |
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/// <summary>
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/// A set of methods that replicate some of the LINQ functionality.
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/// </summary>
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/// <remarks>
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/// Will be removed when SharpDevelop is compiled with C# 3.0.
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/// </remarks>
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public static class Linq |
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{ |
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/// <summary>
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/// Applies a conversion function to all elements in the input.
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/// </summary>
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public static IEnumerable<S> Select<T, S>(IEnumerable<T> input, Converter<T, S> converter) |
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{ |
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foreach (T element in input) { |
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yield return converter(element); |
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} |
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} |
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/// <summary>
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/// Applies an action to all elements in the input.
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/// </summary>
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public static void Apply<T>(IEnumerable<T> input, Action<T> action) |
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{ |
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foreach (T element in input) { |
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action(element); |
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} |
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} |
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/// <summary>
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/// Returns only the elements in input for which filter is true.
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/// </summary>
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public static IEnumerable<T> Where<T>(IEnumerable<T> input, Predicate<T> filter) |
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{ |
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foreach (T element in input) { |
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if (filter(element)) |
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yield return element; |
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} |
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} |
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/// <summary>
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/// Returns the elements of type T inside input by running
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/// "if (element is T) yield return (T)element;" on each element.
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/// </summary>
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public static IEnumerable<T> OfType<T>(IEnumerable input) |
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{ |
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foreach (object element in input) { |
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if (element is T) |
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yield return (T)element; |
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} |
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} |
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/// <summary>
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/// Casts a non-generic enumeration into a generic enumeration.
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/// </summary>
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public static IEnumerable<T> CastTo<T>(IEnumerable input) |
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{ |
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foreach (object element in input) { |
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yield return (T)element; |
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} |
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} |
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/// <summary>
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/// Returns the first element in input for which filter is true.
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/// Returns default(T) if no element matches the filter.
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/// </summary>
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public static T Find<T>(IEnumerable<T> input, Predicate<T> filter) |
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{ |
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foreach (T element in input) { |
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if (filter(element)) |
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return element; |
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} |
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return default(T); |
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} |
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/// <summary>
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/// Gets if any element in the input matches the filter.
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/// </summary>
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public static bool Exists<T>(IEnumerable<T> input, Predicate<T> filter) |
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{ |
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foreach (T element in input) { |
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if (filter(element)) |
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return true; |
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} |
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return false; |
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} |
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/// <summary>
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/// Returns the first element from <paramref name="input"/>.
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/// </summary>
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public static T First<T>(IEnumerable<T> input) |
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{ |
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if (input == null) |
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throw new ArgumentNullException("input"); |
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foreach (T item in input) { |
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return item; |
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} |
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throw new ArgumentException("input must not be an empty collection", "input"); |
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} |
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public static List<T> ToList<T>(IEnumerable<T> input) |
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{ |
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return new List<T>(input); |
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} |
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public static T[] ToArray<T>(IEnumerable<T> input) |
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{ |
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if (input is ICollection<T>) { |
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ICollection<T> c = (ICollection<T>)input; |
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T[] arr = new T[c.Count]; |
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c.CopyTo(arr, 0); |
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return arr; |
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} else { |
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return new List<T>(input).ToArray(); |
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} |
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} |
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public static int Count<T>(IEnumerable<T> input) |
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{ |
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if (input is ICollection<T>) { |
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return ((ICollection<T>)input).Count; |
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} |
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int count = 0; |
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using (IEnumerator<T> e = input.GetEnumerator()) { |
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while (e.MoveNext()) |
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count++; |
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} |
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return count; |
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} |
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/// <summary>
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/// Concatenates the specified enumerables.
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/// </summary>
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public static IEnumerable<T> Concat<T>(IEnumerable<T> input1, IEnumerable<T> input2) |
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{ |
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foreach (T element in input1) { |
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yield return element; |
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} |
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foreach (T element in input2) { |
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yield return element; |
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} |
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} |
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/// <summary>
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/// Concatenates the specified enumerables.
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/// </summary>
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public static IEnumerable<T> Concat<T>(IEnumerable<IEnumerable<T>> inputs) |
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{ |
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foreach (IEnumerable<T> input in inputs) { |
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foreach (T element in input) { |
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yield return element; |
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} |
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} |
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} |
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/// <summary>
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/// Outputs distinct elements only, filtering all duplicates.
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/// </summary>
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public static IEnumerable<T> Distinct<T>(IEnumerable<T> input) |
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{ |
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// store elements already seen
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Dictionary<T, object> elements = new Dictionary<T, object>(); |
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foreach (T element in input) { |
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if (!elements.ContainsKey(element)) { |
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elements.Add(element, null); |
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yield return element; |
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} |
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} |
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} |
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} |
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} |
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@ -1,21 +0,0 @@ |
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// <file>
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// <copyright see="prj:///doc/copyright.txt"/>
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// <license see="prj:///doc/license.txt"/>
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// <owner name="Daniel Grunwald" email="daniel@danielgrunwald.de"/>
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// <version>$Revision$</version>
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// </file>
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using System; |
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namespace ICSharpCode.SharpDevelop |
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{ |
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// define some delegates for functional programming
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public delegate void Action(); |
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// void Action<A>(A arg1) is already defined in System.
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public delegate void Action<A, B>(A arg1, B arg2); |
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public delegate void Action<A, B, C>(A arg1, B arg2, C arg3); |
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public delegate R Func<R>(); |
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public delegate R Func<A, R>(A arg1); |
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public delegate R Func<A, B, R>(A arg1, B arg2); |
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public delegate R Func<A, B, C, R>(A arg1, B arg2, C arg3); |
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} |
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