C# 中的 Array.TrueForAll() 方法

csharpserver side programmingprogramming更新于 2025/9/19 19:19:00

C# 中的 Array.TrueForAll() 方法用于确定数组中的每个元素是否都符合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

现在让我们看一个实现 Array.TrueForAll() 方法的示例 −

using System;
public class Demo{
   public static void Main(){
      Console.WriteLine("数组元素...");
      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 −

数组元素...
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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