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hELLO ยท Designed By ์ •์ƒ์šฐ.
Rainbow๐ŸŒˆCoder

My dev Note๐Ÿ“’

C#/์ด๊ฒƒ์ด C#์ด๋‹ค

35. ์ธํ„ฐํŽ˜์ด์Šค ๋‹ค์ค‘ ์ƒ์†

2022. 2. 15. 12:23
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ํด๋ž˜์Šค๋Š” ์—ฌ๋Ÿฌ ํด๋ž˜์Šค๋ฅผ ํ•œ๊บผ๋ฒˆ์— ์ƒ์†ํ•  ์ˆ˜ ์—†๋‹ค.(์ฃฝ์Œ์˜ ๋‹ค์ด์•„๋ชฌ๋“œ : ๋ชจํ˜ธ์„ฑ ๋ฐœ์ƒ)

 

<์ฃฝ์Œ์˜ ๋‹ค์ด์•„๋ชฌ๋“œ ์˜ˆ์ œ>

์ตœ์กฐ์˜ ํด๋ž˜์Šค(Ridable)๊ฐ€ ๋‘ ๊ฐœ์˜ ํŒŒ์ƒํด๋ž˜์Šค(Car, Plane)๋กœ๋ถ€ํ„ฐ ์ƒ์†๋ฐ›๊ณ ,

์ด ๋‘๊ฐœ์˜ ํŒŒ์ƒ ํด๋ž˜์Šค๋ฅผ ๋‹ค์‹œ ํ•˜๋‚˜์˜ ํด๋ž˜์Šค(MyVehicle)๊ฐ€ ์ƒ์†ํ•˜๋Š” ๊ฒƒ์„ ๋งํ•œ๋‹ค.

์—ฌ๊ธฐ์„œ MyVehicle๋Š” Car์˜ Ride()๋ฉ”์†Œ๋“œ๋ฅผ ๋ฌผ๋ ค๋ฐ›์„์ง€,

Plane์˜ Ride()๋ฉ”์†Œ๋“œ๋ฅผ ๋ฌผ๋ ค๋ฐ›์„์ง€, ๋ชจํ˜ธํ•˜๋‹ค.

 

    public abstract class Ridable
    {
        public abstract void Ride();
    }

    public class Car : Ridable
    {
        public void Run()
        {
            Console.WriteLine("๋ถ€๋ฆ‰๋ถ€๋ฆ‰");
        }
        public override void Ride()
        {
            Run();
        }
    }

    public class Plane : Ridable
    {
        public void Fly()
        {
            Console.WriteLine("ํ›จํ›จ");
        }
        public override void Ride()
        {
            Fly();
        }
    }

    public class MyVehicle : Car, Plane
    {

    }

ใ„ด ๊ทธ๋ž˜๋„ ์—ฌ๋Ÿฌ ํด๋ž˜์Šค๋กœ๋ถ€ํ„ฐ ๊ตฌํ˜„์„ ๋ฌผ๋ ค๋ฐ›๊ณ  ์‹ถ๋‹ค๋ฉด?

๋‹ค๋ฅธ ํด๋ž˜์Šค์˜ ๊ธฐ๋Šฅ์„ ์ƒˆ๋กœ์šด ํด๋ž˜์Šค์— ๋„ฃ๋Š” ๋ฐฉ๋ฒ•์ด ๊ผญ ์ƒ์†๋งŒ ์žˆ๋Š” ๊ฒƒ์€ ์•„๋‹ˆ๋‹ค.

ํฌํ•จ์ด๋ผ๋Š” ๊ธฐ๋ฒ•๋„ ์žˆ๋‹ค.

๋‹ค์Œ๊ณผ ๊ฐ™์ด ํด๋ž˜์Šค ์•ˆ์— ๋ฌผ๋ ค๋ฐ›๊ณ  ์‹ถ์€ ๊ธฐ๋Šฅ์„ ๊ฐ€์ง„ ํด๋ž˜์Šค๋“ค์„ ํ•„๋“œ๋กœ ์„ ์–ธํ•ด ๋„ฃ๋Š” ๊ฒƒ์ด๋‹ค.

 

using System;
using System.IO;

namespace MultInterface
{
    public abstract class Ridable
    {
        public abstract void Ride();
    }

    public class Car : Ridable
    {
        public void Run()
        {
            Console.WriteLine("๋ถ€๋ฆ‰๋ถ€๋ฆ‰");
        }
        public override void Ride()
        {
            Run();
        }
    }

    public class Plane : Ridable
    {
        public void Fly()
        {
            Console.WriteLine("ํ›จํ›จ");
        }
        public override void Ride()
        {
            Fly();
        }
    }

    public class MyVehicle
    {
        Car car = new Car();
        Plane plane = new Plane();

        public void Fly() { plane.Ride(); }
        public void Run() { car.Ride(); }
    }

    class MainApp
    {
        static void Main(string[] args)
        {
            MyVehicle car = new MyVehicle();
            car.Run(); //๋ถ€๋ฆ‰๋ถ€๋ฆ‰
        }
    }
}

 

<์—ฌ๊ธฐ์„œ๋ถ€ํ„ฐ ์ค‘์š”>

 

์ธํ„ฐํŽ˜์ด์Šค์˜ ๋‹ค์ค‘ ์ƒ์†์€ ๊ฐ€๋Šฅํ•˜๋‹ค.

์ธํ…ŒํŽ˜์ด์Šค๋Š” ๋‚ด์šฉ์ด ์•„๋‹Œ ์™ธํ˜•์„ ๋ฌผ๋ ค์ค€๋‹ค. ์†์€ ์–ด๋–จ์ง€ ๋ชฐ๋ผ๋„ ๊ฒ‰๋ชจ์Šต๋งŒํผ์€ ์ •ํ™•ํ•˜๊ฒŒ ์ž์‹ ์„ ๋‹ฎ๊ธฐ๋ฅผ ๊ฐ•์ œํ•œ๋‹ค.

(๋”ฐ๋ผ์„œ ํด๋ž˜์Šค ์ฃฝ์Œ์˜ ๋‹ค์ด์•„๋ชฌ๋“œ๊ฐ™์€ ๋ฌธ์ œ๋„ ๋ฐœ์ƒํ•˜์ง€ ์•Š๋Š”๋‹ค.)

ํ”„๋กœ๊ทธ๋ž˜๋จธ๋Š” ์—ฌ๋Ÿฌ ์ธํ„ฐํŽ˜์ด์Šค๋ฅผ ๋‹ค์ค‘ ์ƒ์†ํ•˜๋Š” ํด๋ž˜์Šค๋ฅผ ์•ˆ์‹ฌํ•˜๊ณ  ์ด์šฉํ•  ์ˆ˜ ์žˆ๋‹ค. 

 

<์ธํ„ฐํŽ˜์ด์Šค ๋‹ค์ค‘ ์ƒ์† ์˜ˆ์ œ>

using System;
using System.IO;

namespace MultInterfaceInheritance
{
    interface IRunnable
    {
        void Run();
    }

    interface IFlyable
    {
        void Fly();
    }

    class FlyingCar : IRunnable, IFlyable
    {
        public void Run()
        {
            Console.WriteLine("๋‹ฌ๋ ค๋ผ ๋‹ฌ๋ ค!");
        }
        public void Fly()
        {
            Console.WriteLine("๋‚ ์•„๋ผ ๋‚ ์•„!");
        }
    }

    class MainApp
    {
        static void Main(string[] args)
        {
            FlyingCar car = new FlyingCar();
            car.Run(); //๋‹ฌ๋ ค๋ผ ๋‹ฌ๋ ค!
            car.Fly(); //๋‚ ์•„๋ผ ๋‚ ์•„!

            IRunnable test = new FlyingCar();
            test.Run(); //๋‹ฌ๋ ค๋ผ ๋‹ฌ๋ ค!
            /*์ปดํŒŒ์ผ์—๋Ÿฌ*///test.fly();
            //'IRunnable'์—๋Š” 'fly'์— ๋Œ€ํ•œ ์ •์˜๊ฐ€ ํฌํ•จ๋˜์–ด ์žˆ์ง€ ์•Š๊ณ ,
            //'IRunnable' ํ˜•์‹์˜ ์ฒซ ๋ฒˆ์งธ ์ธ์ˆ˜๋ฅผ ํ—ˆ์šฉํ•˜๋Š” ์•ก์„ธ์Šค ๊ฐ€๋Šฅํ•œ ํ™•์žฅ ๋ฉ”์„œ๋“œ 'fly'์ด(๊ฐ€) ์—†์Šต๋‹ˆ๋‹ค.

            IRunnable runnable = car as IRunnable;
            runnable.Run(); //๋‹ฌ๋ ค๋ผ ๋‹ฌ๋ ค!

            IFlyable flyable = car as IFlyable;
            flyable.Fly(); //๋‚ ์•„๋ผ ๋‚ ์•„!
        }
    }
}

<์˜ˆ์ œ>

using System;

namespace MultiInterfaceInheritance
{
    interface IRunnable
    {
        void Run();
    }

    interface IFlyable
    {
        void Fly();
    }

    class FlyingCar : IRunnable, IFlyable
    {
        public void Run()
        {
            Console.WriteLine("Run! Run!");
        }

        public void Fly()
        {
            Console.WriteLine("Fly! Fly!");
        }
    }

    class MainApp
    {
        static void Main(string[] args)
        {
            FlyingCar car = new FlyingCar();
            car.Run();
            car.Fly();

            IRunnable runnable = car as IRunnable;
            runnable.Run();
            //runnable.Fly();//์ปดํŒŒ์ผ์—๋Ÿฌ

            IFlyable flyable = car as IFlyable;
            //flyable.Run();//์ปดํŒŒ์ผ์—๋Ÿฌ
            flyable.Fly();
        }
    }
}

 

<์˜ˆ์ œ ์ถœ๋ ฅ>

Run! Run!
Fly! Fly!
Run! Run!
Fly! Fly!

 

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