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C#: and
組合影像:兩者必須匹配。这是一个模式组合器,而不是逻辑运算符 &&。
簡單範例 (Example.cs)
請將此範例另存為 Example.cs,並與本頁其他範例分開執行。
Example.cs:
// PROJECT-EXAMPLE
int value = 15;
System.Console.WriteLine(value is > 10 and < 20);
結果:
True
句法
value is pattern1 and pattern2
例1:基本形式
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
public static class Program
{
public static async Task Main(string[] args)
{
int value = 15;
Console.WriteLine(value is > 10 and < 20);
Console.WriteLine(value is 12 or 15);
Console.WriteLine(value is not 0);
}
}
例2:另一種實用形式
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.IO;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;
public static class Program
{
public static async Task Main(string[] args)
{
string? text = "ore";
Console.WriteLine(text is not null and { Length: > 1 });
Console.WriteLine(text is "ore" or "wood");
}
}
官方來源:Microsoft學習。