KO CSharp Operator Null Coalescing - LIHACHTETAN/ClassicUO-Bad-Newbie-CSharp-Scripts-IDE GitHub Wiki

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null์˜ ๊ฐ’

ํ•ธ๋“œ๋ถ C# ยท ์‹ค์šฉ ๊ฐ€์ด๋“œ

?? null์—์„œ๋งŒ ์˜ˆ๋น„ ๊ฐ’์„ ์„ ํƒํ•ฉ๋‹ˆ๋‹ค. ??= ์™ผ์ชฝ ๋ถ€๋ถ„์ด ์•„์ง null์ธ ๊ฒฝ์šฐ์—๋งŒ ์”๋‹ˆ๋‹ค.

๊ฐ„๋‹จํ•œ ์˜ˆ์ œ (Example.cs)

์ด ์˜ˆ์ œ๋ฅผ Example.cs๋กœ ๋”ฐ๋กœ ์ €์žฅํ•˜๊ณ  ์ด ํŽ˜์ด์ง€์˜ ๋‹ค๋ฅธ ์˜ˆ์ œ์™€ ๋…๋ฆฝ์ ์œผ๋กœ ์‹คํ–‰ํ•˜์„ธ์š”.

Example.cs:

// PROJECT-EXAMPLE
string? name = null;
name ??= "Player";
System.Console.WriteLine(name);

๊ฒฐ๊ณผ:

Player

ํ†ต์‚ฌ๋ก 

value ?? fallback / value ??= fallback

์˜ˆ์‹œ 1

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? name = null;
        Console.WriteLine(name ?? "Unknown");
        name ??= "Archer";
        Console.WriteLine(name);
    }
}

์˜ˆ์‹œ 2

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)
    {
        List<int>? values = null;
        (values ??= []).Add(3);
        Console.WriteLine(values.Count);
    }
}

๊ณต์‹ ์ถœ์ฒ˜: Microsoft ํ•™์Šต.

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