33. ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ(delegate) ์‚ฌ์šฉ

2022. 4. 8. 09:11ยท๐Ÿ’ป Programming Language/C#

๋ธ๋ฆฌ๊ฒŒ์ดํŠธ ์‚ฌ์šฉ ์˜ˆ์ œ ์ฝ”๋“œ

using System.Collections;

namespace DelegateEx
{   
    delegate int MyDelegate(int a, int b);

    class SumSubtract
    {
        public int sum(int a, int b)
        {
            return a + b;
        }
        public static int subtract(int a, int b) 
        // ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ๋Š” static ๋ฉ”์†Œ๋“œ๋„ ์ „๋‹ฌํ•  ์ˆ˜ ์žˆ๋‹ค. 
        {
            return a - b;
        }
        // ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ(delegate = ๋Œ€๋ฆฌ์ž)๋Š” ํ•ด๋‹น ๋ฉ”์†Œ๋“œ๋“ค์ด ์ €์žฅ๋˜์–ด ์žˆ๋Š” ์ฃผ์†Œ๊ฐ’์„ ๋„˜๊ฒจ์ฃผ๋Š” ๊ฒƒ์ด๋‹ค.
    }

    class Program
    {

        static void Main(string[] args)
        {
            SumSubtract ss = new SumSubtract();

            MyDelegate md1 = new MyDelegate(ss.sum);

            Console.WriteLine(md1(1, 2));

            MyDelegate md2 = new MyDelegate(SumSubtract.subtract);

            Console.WriteLine(md2(10, 2));
        }
    }
}
Output

3
8
  • ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ๋Š” static ๋ฉ”์†Œ๋“œ๋„ ์ „๋‹ฌํ•  ์ˆ˜ ์žˆ๋‹ค.
  • ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ(delegate = ๋Œ€๋ฆฌ์ž)๋Š” ํ•ด๋‹น ๋ฉ”์†Œ๋“œ๋“ค์ด ์ €์žฅ๋˜์–ด ์žˆ๋Š” ์ฃผ์†Œ๊ฐ’์„ ๋„˜๊ฒจ์ฃผ๋Š” ๊ฒƒ์ด๋‹ค.
  • subtract ๋ฉ”์†Œ๋“œ์™€ ๊ฐ™์ด static ์ด ๋ถ™์œผ๋ฉด ์ธ์Šคํ„ด์Šค์˜ ๋ฉค๋ฒ„๊ฐ€ ์•„๋‹Œ ํด๋ž˜์Šค์˜ ๋ฉค๋ฒ„์ด๊ธฐ์— ํด๋ž˜์Šค๋ฅผ ํ†ตํ•ด ํ˜ธ์ถœํ•ด์•ผํ•œ๋‹ค.

โญ๏ธโญ๏ธโญ๏ธ Delegate์˜ ์‚ฌ์šฉ์ด์œ 


  • โญ๏ธโญ๏ธโญ๏ธ ์•„๋ž˜ ์ฝ”๋“œ๋ฅผ ํ†ตํ•ด ์™œ ์‚ฌ์šฉํ•˜๋Š”์ง€ ์ดํ•ดํ–ˆ๊ณ  ๊ทธ๋ฆฌ๊ณ  Bubble Sort์— ๋Œ€ํ•ด์„œ๋„ ์ƒ๊ธฐํ–ˆ๋‹ค.

using System.Collections;

namespace DelegateEx
{

    delegate int select_sort_type(int a, int b);

    class Program
    {   
        static int Ascending(int a, int b)
        {
            if (a > b)
            {
                return 1;
            }
            else if(a == b)
            {
                return 0;
            }
            else
            {
                return -1;
            }
        }

        static int Descending(int a, int b)
        {
            if (a < b)
            {
                return 1;
            }
            else if (a == b)
            {
                return 0;
            }
            else
            {
                return -1;
            }
        }

        //๋ฒ„๋ธ” ์ •๋ ฌ ์•Œ๊ณ ๋ฆฌ์ฆ˜
        static void BubbleSort(int[] Array1, select_sort_type sortType)
        {
            int temp = 0;

            for (int i = 0; i < Array1.Length - 1; i++)
            {
                for (int j = 0;  j < Array1.Length - (i+1); j++)
                {
                    if (sortType(Array1[j],Array1[j+1]) > 0)
                    {
                        temp = Array1[j];
                        Array1[j] = Array1[j+1];
                        Array1[j+1] = temp;
                    } 
                }
            }
        }

        static void Main(string[] args)
        {   
            int[] arr = { 12, 11, 33, 14, 5, 16, 7, 82, 9, 10, 11, 12 };

            BubbleSort(arr,new select_sort_type(Ascending));

            Console.WriteLine($"---------------------์˜ค๋ฆ„์ฐจ์ˆœ ์ •๋ ฌ-----------------------");

            foreach(int i in arr)
            {
                Console.WriteLine($"{i} ");
            }
            Console.WriteLine();
            Console.WriteLine($"---------------------๋‚ด๋ฆผ์ฐจ์ˆœ ์ •๋ ฌ-----------------------");

            //์ด๋ ‡๊ฒŒ ๋น„์Šทํ•˜๊ฒŒ > < ์—ฐ์‚ฐ๋งŒ ๋ฐ”๊ฟ”์ฃผ๋ฉด ๋˜๋Š” ์ฝ”๋“œ๋ฅผ ๊ณ„์†ํ•ด์„œ ๋‚ด๋ถ€ ํ•จ์ˆ˜๋ฅผ ๊ณ ์ณ์ค˜๊ฐ€๋ฉฐ ์˜ค๋ฆ„์ฐจ์ˆœ๊ณผ ๋‚ด๋ฆผ์ฐจ์ˆœ์„ ๋ฐ”๊ฟ”์•ผ ํ• ๊นŒ?
            //๋ถˆํŽธํ•˜๋‹ค. ์ด๋Ÿด๋• ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ๋ฅผ ์ •์˜ํ•ด์„œ ํ•ด๊ฒฐํ•  ์ˆ˜ ์žˆ๋‹ค.

            BubbleSort(arr, new select_sort_type(Descending));
            foreach (int i in arr)
            {
                Console.WriteLine($"{i} ");
            }

        }
    }
}
Output

---------------------์˜ค๋ฆ„์ฐจ์ˆœ ์ •๋ ฌ-----------------------
5
7
9
10
11
11
12
12
14
16
33
82

---------------------๋‚ด๋ฆผ์ฐจ์ˆœ ์ •๋ ฌ-----------------------
82
33
16
14
12
12
11
11
10
9
7
5
  • ๋‹จ์ˆœํ•˜๊ฒŒ ๋‹ค๋ฅธ ๋ฉ”์†Œ๋“œ์— ๋ฉ”์†Œ๋“œ๋ฅผ ์ „๋‹ฌํ•˜์ง€๋งŒ, ์ด๋ฒˆ ์ฝ”๋“œ์—์„œ์ฒ˜๋Ÿผ ์˜ค๋ฆ„์ฐจ์ˆœ ๋‚ด๋ฆผ์ฐจ์ˆœ์— ๋Œ€ํ•œ ๋กœ์ง์„ ์ž‘์„ฑํ•  ํ•„์š”์—†์ด ๊ตฌํ˜„์ด ๊ฐ€๋Šฅํ–ˆ๋‹ค.

'๐Ÿ’ป Programming Language > C#' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€

35. ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ ์ฒด์ธ(delegate chain)  (0) 2022.04.08
34. ์ œ๋„ค๋ฆญ ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ(Generic Delegate) & ์ฝœ๋ฐฑํ•จ์ˆ˜  (0) 2022.04.08
32. ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ(delegate)์˜ ๊ธฐ๋ณธ ๊ฐœ๋…  (0) 2022.04.08
31. ์˜ˆ์™ธํ•„ํ„ฐ(Exception Filter)  (0) 2022.04.08
30. C# 7.0์—์„œ throw๋ฌธ ํ‘œํ˜„์‹, finally ์ ˆ  (0) 2022.04.07
'๐Ÿ’ป Programming Language/C#' ์นดํ…Œ๊ณ ๋ฆฌ์˜ ๋‹ค๋ฅธ ๊ธ€
  • 35. ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ ์ฒด์ธ(delegate chain)
  • 34. ์ œ๋„ค๋ฆญ ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ(Generic Delegate) & ์ฝœ๋ฐฑํ•จ์ˆ˜
  • 32. ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ(delegate)์˜ ๊ธฐ๋ณธ ๊ฐœ๋…
  • 31. ์˜ˆ์™ธํ•„ํ„ฐ(Exception Filter)
S.Honey
S.Honey
  • S.Honey
    Algo ์“ฐ์ž
    S.Honey
  • ์ „์ฒด
    ์˜ค๋Š˜
    ์–ด์ œ
    • ๋ถ„๋ฅ˜ ์ „์ฒด๋ณด๊ธฐ (123)
      • ํšŒ๊ณ  (0)
        • ์ทจ์—… ํ›„ ํšŒ๊ณ  (0)
      • ๐Ÿƒ Frontend Road-Map (2)
        • ๐Ÿšฉ Summary (1)
        • ๐Ÿ“š Road-Map Contents (1)
        • ๐ŸŸง HTML (0)
        • ๐ŸŸฆ CSS (0)
        • ๐ŸŸจ Javascript (0)
        • โฌœ React (0)
        • ๐ŸŸช Redux (0)
      • Backend (0)
        • QueryDSL (0)
      • ๐Ÿ’ป Programming Language (54)
        • C# (51)
        • Flutter-Dart (3)
        • Java (0)
      • ๐Ÿ“š Computer Science (4)
        • Algorithms (4)
        • Database (0)
        • Network (0)
        • Operating System(OS) (0)
      • ๐Ÿ’ฏ CodingTest (60)
        • BaekJoon (22)
        • Programmers (34)
        • CodeTree (4)
      • โœ’๏ธ Design Pattern (1)
      • ๐Ÿฑ Etc (2)
        • Jenkins Plugin ์ œ์ž‘๊ธฐ (1)
  • ๋ธ”๋กœ๊ทธ ๋ฉ”๋‰ด

    • ๋งํฌ

    • ๊ณต์ง€์‚ฌํ•ญ

      • ๐Ÿ“– ๊ณต๋ถ€ ์ฐธ๊ณ  ๊ต์žฌ ๋ฐ ์ž๋ฃŒ
    • ์ธ๊ธฐ ๊ธ€

    • ํƒœ๊ทธ

      Algorithm
      BAEKJOON
      ์ž๋ฐ”์Šคํฌ๋ฆฝํŠธ
      ์“ฐ์…จ์ž–์•„
      ์ฝ”๋“œํŠธ๋ฆฌ
      c#
      JS
      ์นด์นด์˜ค
      ๊ตฌํ˜„
      ์ด์ง„ํƒ์ƒ‰
      DART
      ์ž๋ฃŒ๊ตฌ์กฐ
      ์ฝ”๋”ฉํ…Œ์ŠคํŠธ
      BFS
      sort
      ์‚ผ์„ฑsw์—ญํ…Œ
      Flutter
      ์Šคํ„ฐ๋””
      programmers
      JavaScript
      ๋ฐฑ์ค€
      ์•Œ๊ณ ๋ฆฌ์ฆ˜
      ๋™์  ํ”„๋กœ๊ทธ๋ž˜๋ฐ
      ๋ฌธ์ž์—ด ํŒŒ์‹ฑ
      ์‹œ๋ฎฌ๋ ˆ์ด์…˜
      ํ”„๋กœ๊ทธ๋ž˜๋จธ์Šค
      ํŒŒ์ด์ฌ
      DP
      Java
      ๊ทธ๋ž˜ํ”„ ํƒ์ƒ‰
    • ์ตœ๊ทผ ๋Œ“๊ธ€

    • ์ตœ๊ทผ ๊ธ€

    • hELLOยท Designed By์ •์ƒ์šฐ.v4.10.1
    S.Honey
    33. ๋ธ๋ฆฌ๊ฒŒ์ดํŠธ(delegate) ์‚ฌ์šฉ
    ์ƒ๋‹จ์œผ๋กœ

    ํ‹ฐ์Šคํ† ๋ฆฌํˆด๋ฐ”