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hELLO ยท Designed By ์ •์ƒ์šฐ.
Rainbow๐ŸŒˆCoder

My dev Note๐Ÿ“’

๋Œ€๋ฆฌ์ž์™€ ์ต๋ช…๋ฉ”์†Œ๋“œ(1)
C#/์ด๊ฒƒ์ด C#์ด๋‹ค

๋Œ€๋ฆฌ์ž์™€ ์ต๋ช…๋ฉ”์†Œ๋“œ(1)

2022. 11. 28. 14:11
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์ฐธ๊ณ  ์˜์ƒ

https://youtu.be/HNX_FZBU_wA

๋Œ€๋ฆฌ์ž(Delegator)

- ์ฝ”๋“œ(๋ฉ”์†Œ๋“œ)๋ฅผ ๋Œ€์‹  ์‹คํ–‰ํ•˜๋Š” ๊ฐ์ฒด

- ๋ฉ”์†Œ๋“œ๋ฅผ ํ˜ธ์ถœํ•˜๋“ฏ ์‚ฌ์šฉ(์ฆ‰, ์ธ์ˆ˜๋ฅผ ์ž…๋ ฅํ•˜๊ณ  ๊ฒฐ๊ณผ๋ฅผ ๋ฐ˜ํ™˜ ๋ฐ›์Œ)

- ๋‹จ, ๋Œ€๋ฆฌ์ž๊ฐ€ ์‹คํ–‰ํ•  ์ฝ”๋“œ๋Š” ์ปดํŒŒ์ผ ์‹œ์ ์ด ์•„๋‹Œ ์‹คํ–‰ ์‹œ์ ์— ๊ฒฐ์ •

 

 

๋Œ€๋ฆฌ์ž์˜ ์„ ์–ธ๊ณผ ์‚ฌ์šฉ

(1) delegate ํ‚ค์›Œ๋“œ ์‚ฌ์šฉ, ๋Œ€๋ฆฌ์ž ์„ ์–ธ
delegate int MyDelegate(int a, int b); //์ธํ„ฐํŽ˜์ด์Šค ์„ ์–ธํ•  ๋•Œ ์ฒ˜๋Ÿผ ๊ตฌํ˜„์€ ์—†๋‹ค!

ํ˜น์€ 

ํ•œ์ •์ž - delegate - ๋ฐ˜ํ™˜ํ˜• - ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ๋ช…(๋งค๊ฐœ๋ณ€์ˆ˜ ๋ชฉ๋ก)

private delegate int MyDelegate(int a, int b);

 

(2) ์‚ฌ์šฉ ์˜ˆ

<์˜ˆ์ œ>

namespace Delegate // Note: actual namespace depends on the project name.
{
	// 1. ๋Œ€๋ฆฌ์ž ์„ ์–ธ
	delegate int MyDelegate(int a, int b);
	class Calculator
	{
		public int Plus(int a, int b)
		{
			return a + b;
		}

		public static int Minus(int a, int b)
		{
			return a - b;
		}
	}

	class MainApp
	{
		static void Main(string[] args)
		{
			Calculator Calc = new Calculator();
			MyDelegate Callback;

			// 2. ๋Œ€๋ฆฌ์ž ์ธ์Šคํ„ด์Šค ์ƒ์„ฑ & ํ˜ธ์ถœ (์ฐธ์กฐํ•  ๋ฉ”์†Œ๋“œ -> ์ธ์ˆ˜)
			Callback = new MyDelegate(Calc.Plus);  // Plus ์ฐธ์กฐ
			Console.WriteLine(Callback(3, 4));

			// 2. ๋Œ€๋ฆฌ์ž ์ธ์Šคํ„ด์Šค ์ƒ์„ฑ & ํ˜ธ์ถœ (์ฐธ์กฐํ•  ๋ฉ”์†Œ๋“œ -> ์ธ์ˆ˜)
			Callback = new MyDelegate(Calculator.Minus);  // Minus ์ฐธ์กฐ
			Console.WriteLine(Callback(7, 5));
		}
	}
}

<์ง์ ‘>

// See https://aka.ms/new-console-template for more information
using System;
using System.IO;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using System;

namespace Delegate
{

	public delegate int MyCalDelegate(int firstNum, int secoundNum);
	class Calculator
	{
		public int Sum(int firstNum, int secoundNum)
		{
			return firstNum + secoundNum;
		}

		public int Minus(int firstNum, int secoundNum)
		{
			return firstNum - secoundNum;
		}
	}
	class MainApp
	{
		static void Main(string[] args)
		{
			Calculator BasicCalculator = new Calculator();
            //์ฆ‰, BasicCalculator.Sum๋ฅผ ๋Œ€๋ฆฌ ์‹คํ–‰ํ•˜๋„๋ก ์œ„์ž„์„ ๋ฐ›์€ ์ฝœ๋ฐฑ์ธ plusCalDelegate๋ฅผ ์‹คํ–‰ํ•จ
			MyCalDelegate plusCalDelegate = new MyCalDelegate(BasicCalculator.Sum);
			MyCalDelegate minusCalDelegate = new MyCalDelegate(BasicCalculator.Minus);
			Console.WriteLine(plusCalDelegate(10, 23));
			Console.WriteLine(minusCalDelegate(5, 1));
		}
	}
}

์ถœ๋ ฅ ๊ฒฐ๊ณผ

๋ฌผ๋ก  ์•„๋ž˜์™€ ๊ฐ™์ด ์ž‘์„ฑํ•˜์—ฌ๋„ ๊ฒฐ๊ณผ๋Š” ๋˜‘๊ฐ™์ด ๋‚˜์˜จ๋‹ค.

			Calculator BasicCalculator = new Calculator();
			MyCalDelegate plusCalDelegate = BasicCalculator.Sum;
			MyCalDelegate minusCalDelegate = BasicCalculator.Minus;
			Console.WriteLine(plusCalDelegate(10, 23));
			Console.WriteLine(minusCalDelegate(5, 1));

 

์ต๋ช…๋ฉ”์†Œ๋“œ(Anonymous Method)

์ต๋ช… ๋ฉ”์†Œ๋“œ๋ž€ ๋‹ค๋ฅธ 

์˜ˆ์ œ ์ฝ”๋“œ ๋ธ”๋ก์—์„œ ์žฌ์‚ฌ์šฉ๋  ์ผ์ด ์—†๋Š” ์ด๋ฆ„ ์—†๋Š” ๋ฉ”์†Œ๋“œ์ด๋‹ค.

 

 

์ต๋ช… ๋ฉ”์†Œ๋“œ ๊ตฌํ˜„ ์ ˆ์ฐจ

1. ์‚ฌ์ „ ์ •์˜๋œ ๋Œ€๋ฆฌ์ž ํ˜•์‹(๋ฐ˜ํ™˜ํ˜•, ๋งค๊ฐœ๋ณ€์ˆ˜)์— ๋งž์ถฐ ์ต๋ช… ๋ฉ”์†Œ๋“œ ์ž‘์„ฑ

2. ์ต๋ช… ๋ฉ”์†Œ๋“œ ์ •์˜์‹œ delegate ํ‚ค์›Œ๋“œ๋กœ ์‹œ์ž‘, ์ •์˜๋œ ์ฝ”๋“œ๋Š” ๋Œ€๋ฆฌ์ž ์ฐธ์กฐ์— ํ• ๋‹น

3. ์ต๋ช… ๋ฉ”์†Œ๋“œ๋ฅผ ํ• ๋‹น๋ฐ›์€ ๋Œ€๋ฆฌ์ž ์ฐธ์กฐ ํ˜ธ์ถœ

namespace Delegate
{

	public delegate int MyCalDelegate(int firstNum, int secoundNum);
	class Calculator
	{
		public int Sum(int firstNum, int secoundNum)
		{
			return firstNum + secoundNum;
		}

		public int Minus(int firstNum, int secoundNum)
		{
			return firstNum - secoundNum;
		}
	}
	class MainApp
	{
		static void Main(string[] args)
		{
			Calculator BasicCalculator = new Calculator();
			MyCalDelegate plusCalDelegate = BasicCalculator.Sum;
			MyCalDelegate minusCalDelegate = BasicCalculator.Minus;
			MyCalDelegate divideCalDelegate = delegate (int a, int b)
			{
				return a / b;
			};
			Console.WriteLine(plusCalDelegate(10, 23)); //33
			Console.WriteLine(minusCalDelegate(5, 1)); //4
			Console.WriteLine(divideCalDelegate(60, 10)); //6
		}
	}
}

 

<์—ฐ์Šต> : ๋ธ๋ฆฌ์ผ€์ดํŠธ ์ด์šฉํ•œ ๋ฒ„๋ธ”์ •๋ ฌ ๋งŒ๋“ค์–ด๋ณด๊ธฐ (์˜ค๋ฆ„์ฐจ์ˆœ ๋ธ๋ฆฌ์ผ€์ดํŠธ /๋‚ด๋ฆผ์ฐจ์ˆœ ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ) 

 

namespace UsingCallback
{

	class MainApp
	{
		delegate bool Compare(int a, int b);

		static bool AscendCompare(int a, int b)
		{
			if (a > b)
			{
				return true;
			}
			else
			{
				return false;
			}
		}

		static bool DescendCompare(int a, int b)
		{
			if (a < b)
			{
				return true;
			}
			else
			{
				return false;
			}
		}
		static void BubbleSort(int[] numbers, Compare compareNumbers)
		{
			for (int i = 0; i < numbers.Length - 1; i++)
			{
				for (int j = 0; j < numbers.Length - 1 - i; j++)
				{

					if (compareNumbers(numbers[j], numbers[j + 1]))
					{
						int temp = numbers[j];
						numbers[j] = numbers[j + 1];
						numbers[j + 1] = temp;
					}

				}
			}
		}

		static void Main(string[] args)
		{
			int[] numbers = { 3, 4, 6, 1, 9, 2, 7, 8, 10, 5 };
			Compare Ascend = AscendCompare;


			BubbleSort(numbers, Ascend);
			Console.WriteLine();
			for (int i = 0; i < numbers.Length; i++)
			{
				Console.Write(numbers[i]);
			}
			Console.WriteLine();
			Compare Desscend = DescendCompare;
			BubbleSort(numbers, Desscend);
			for (int i = 0; i < numbers.Length; i++)
			{
				Console.Write(numbers[i]);
			}
		}
	}
}

์ถœ๋ ฅ๊ฒฐ๊ณผ

 

์ฐธ๊ณ  

(1) https://velog.io/@ssu_hyun/%EC%9D%B4%EA%B2%83%EC%9D%B4-C%EC%9D%B4%EB%8B%A4-13.-%EB%8C%80%EB%A6%AC%EC%9E%90%EC%99%80-%EC%9D%B4%EB%B2%A4%ED%8A%B8

 

[์ด๊ฒƒ์ด C#์ด๋‹ค] 13. ๋Œ€๋ฆฌ์ž์™€ ์ด๋ฒคํŠธ

Key point ๋Œ€๋ฆฌ์ž ์ผ๋ฐ˜ํ™” ๋Œ€๋ฆฌ์ž ์ต๋ช… ๋ฉ”์†Œ๋“œ ์ด๋ฒคํŠธ 13.1 ๋Œ€๋ฆฌ์ž(delegate) ์ฝœ๋ฐฑ(Callback) ์–ด๋–ค ์ผ์„ ์ˆ˜ํ–‰ํ•˜๋Š” ์ฝ”๋“œ ์›๋ž˜ ์ฝ”๋“œ๊ฐ€ ์•„๋‹Œ ๋‹ค๋ฅธ ์ฝ”๋“œ์—๊ฒŒ ๋Œ€์‹  ์‹คํ–‰ํ•˜๊ฒŒ ํ•˜๋Š” ๊ฒƒ ํ”„๋กœ๊ทธ๋žจ ์‹คํ–‰ ์ค‘์— ๊ฒฐ์ •๋จ(

velog.io

(2) ๋ฒ„๋ธ”์†”ํŠธ

https://youtu.be/Dv4qLJcxus8

(3) ๋ฒ„๋ธ” ์†”ํŠธ

https://youtu.be/EZN0Irp2aPs

 

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    • ์˜ˆ์™ธ ์ฒ˜๋ฆฌํ•˜๊ธฐ(2) System.Exception ํด๋ž˜์Šค
    Rainbow๐ŸŒˆCoder
    Rainbow๐ŸŒˆCoder
    ๋ชฐ๋ผ๋„ ๊ฒฐ๊ตญ์€ ์•„๋Š” ๊ฐœ๋ฐœ์ž, ๊ทธ๋Ÿฐ ์‚ฌ๋žŒ์ด ๋˜๊ธฐ ์œ„ํ•œ ๋งค์ผ์˜ ํ•œ๊ฑธ์Œ

    ํ‹ฐ์Šคํ† ๋ฆฌํˆด๋ฐ”