C# 中的 Array.TrueForAll() 方法
C# 中的 Array.TrueForAll() 方法用于确定数组中的每个元素是否满足由指定谓词定义的条件。
语法
以下是语法 −
public static bool TrueForAll<T> (T[] array, Predicate<T> match);
示例
现在,让我们看一个示例来实现 Array.TrueForAll() 方法 −
using System; public class Demo{ public static void Main(){ Console.WriteLine("Array elements..."); string[] arr = { "bike", "bus"}; for (int i = 0; i < arr.Length; i++){ Console.Write("{0} ", arr[i]); } Console.WriteLine(); int lastIndex = Array.LastIndexOf(arr, "bus"); Console.WriteLine("Last Ocurrence of element bus is at index = "+lastIndex); bool res = Array.TrueForAll(arr, ele => ele.StartsWith("b", StringComparison.Ordinal)); if (res) Console.Write("Every element in the array matches the conditions defined by the specified predicate."); else Console.Write("Eevery element in the array do not matche the conditions defined by the specified predicate"); } }
输出
这将产生以下输出 −
Array elements... bike bus Last Ocurrence of element bus is at index = 1 Every element in the array matches the conditions defined by the specified predicate
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