by Paulo Morgado via Paulo Morgado : C# on 5/13/2007 6:51:48 PM
Extension methods are a feature of the new C# language specification (also available in Visual Basic [^] [^]):
This new feature should be used in existing classes like the Array class by making the folowing methods extension methods:
public static System.Collections.ObjectModel.ReadOnlyCollection<T> AsReadOnly<T>(this T[] array);
public static int BinarySearch<T>(this T[] array, T value);
public static int BinarySearch(this Array array, object value);
public static int BinarySearch<T>(this T[] array, T value, System.IComparer<T> comparer);
public static int BinarySearch<T>(this T[] array, int index, int length, T value);
public static int BinarySearch<T>(this T[] array, int index, int length, T value, System.IComparer<T> comparer);
public static void ConstrainedCopy<T>(this T[] sourceArray, int sourceIndex, T[] destinationArray, int destinationIndex, int length);
public static TOutput[] ConvertAll<TInput, TOutput>(this TInput[] array, System.Converter<TInput, TOutput> converter);
public static void Copy<T>(this T[] sourceArray, T[] destinationArray, int length);
public static void Copy<T>(this T[] sourceArray, T[] destinationArray, long length);
public static void Copy<T>(this T[] sourceArray, int sourceIndex, T[] destinationArray, int destinationIndex, int length);
public static void Copy<T>(this T[] sourceArray, long sourceIndex, T[] destinationArray, long destinationIndex, long length);
public static bool Exists<T>(this T[] array, System.Predicate<T> match);
public static T Find<T>(this T[] array, System.Predicate<T> match);
public static T[] FindAll<T>(this T[] array, System.Predicate<T> match);
public static int FindIndex<T>(this T[] array, System.Predicate<T> match);
public static int FindIndex<T>(this T[] array, int startIndex, System.Predicate<T> match);
public static int FindIndex<T>(this T[] array, int startIndex, int count, System.Predicate<T> match);
public static T FindLast<T>(this T[] array, System.Predicate<T> match);
public static int FindLastIndex<T>(this T[] array, System.Predicate<T> match);
public static int FindLastIndex<T>(this T[] array, int startIndex, System.Predicate<T> match);
public static int FindLastIndex<T>(this T[] array, int startIndex, int count, System.Predicate<T> match);
public static void ForEach<T>(this T[] array, Action<T> action);
public static int IndexOf<T>(this T[] array, T value);
public static int IndexOf<T>(this T[] array, T value, int startIndex);
public static int IndexOf<T>(this T[] array, T value, int startIndex, int count);
public static int LastIndexOf<T>(this T[] array, T value);
public static int LastIndexOf<T>(this T[] array, T value, int startIndex);
public static int LastIndexOf<T>(this T[] array, T value, int startIndex, int count);
public static void Resize<T>(this ref T[] array, int newSize);
public static void Sort<T>(this T[] array);
public static void Sort<T>(this T[] array, System.IComparer<T> comparer);
public static void Sort<T>(this T[] array, System.Comparison<T> comparison);
public static void Sort<TKey, TValue>(this TKey[] keys, TValue[] items);
public static void Sort<T>(this T[] array, int index, int length);
public static void Sort<TKey, TValue>(this TKey[] keys, TValue[] items, System.IComparer<TKey> comparer);
public static void Sort<T>(this T[] array, int index, int length, System.IComparer<T> comparer);
public static void Sort<TKey, TValue>(this TKey[] keys, TValue[] items, int index, int length);
public static void Sort<TKey, TValue>(this TKey[] keys, TValue[] items, int index, int length, System.IComparer<TKey> comparer);
public static bool TrueForAll<T>(this T[] array, System.Predicate<T> match);
This would allow us to write code like this:
if (someArray.IndefOf(someValue))
{
//...
}
If you would like to see this in the next release of the .NET framework, vote on this suggestion.
Original Post: Extension methods missing from System.Array in the .NET Framework 3.5 (Beta 1)
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