2 using System.Collections.Generic;
4 namespace ExtensionTest.Two
6 public delegate TResult AxFunc<in T1, out TResult> (T1 first);
8 public static class Extensions
10 public static bool Contains<T> (this IEnumerable<T> source, T item)
15 public static bool All<T> (this IEnumerable<T> source, AxFunc<T, bool> predicate)
23 namespace ExtensionTest
25 using ExtensionTest.Two;
27 public static class MyClass
29 public static bool IsCharacters (this string text, params char[] chars)
31 return text.All (chars.Contains);
34 public static bool Contains (this string text, string value, StringComparison comp)
36 return text.IndexOf (value, comp) >= 0;
39 public static void Main ()