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Legal Studies刪除與 C# 中謂詞定義的條件相匹配的列表中的所有元素
要刪除與謂詞定義的條件相匹配的列表中的所有元素，程式碼如下所示 −
示例
using System;
using System.Collections.Generic;
public class Demo {
private static bool demo(int i){
return (i == 500);
}
public static void Main(String[] args){
List<int> list = new List<int>();
list.Add(100);
list.Add(500);
list.Add(300);
list.Add(400);
list.Add(500);
list.Add(600);
list.Add(500);
Console.WriteLine("List elements...");
foreach (int i in list){
Console.WriteLine(i);
}
Console.WriteLine(" ");
list.RemoveAll(demo);
Console.WriteLine("List after removing elements 500...");
foreach (int i in list){
Console.WriteLine(i);
}
}
}輸出
這將產生以下輸出 −
List elements... 100 500 300 400 500 600 500 List after removing elements 500... 100 300 400 600
示例
我們來看另一個示例 −
using System;
using System.Collections.Generic;
public class Demo {
private static bool demo(int i){
return ((i % 10) == 0);
}
public static void Main(String[] args){
List<int> list = new List<int>();
list.Add(100);
list.Add(295);
list.Add(355);
list.Add(450);
list.Add(550);
Console.WriteLine("List elements...");
foreach (int i in list){
Console.WriteLine(i);
}
Console.WriteLine(" ");
list.RemoveAll(demo);
Console.WriteLine("List after removing elements...");
foreach (int i in list){
Console.WriteLine(i);
}
}
}輸出
這將產生以下輸出 −
List elements... 100 295 355 450 550 List after removing elements... 295 355
更新於: 05-12-2019
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