Strategy Pattern

머리말

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Strategy Pattern

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Code Block

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팩토리 패턴과 함께 이런식으로 쓸 수 있다.

public abstract class SomeStrategy
{
    public abstract void CreateSomeThing(ref SomeObject someObject);
}

public class SomeStrategyA: SomeStrategy
{
    public SomeStrategyA() { /* Constructor */ }

    public override void CreateSomeThing(ref SomeObject someObject)
    {
        someObject = new SomeObjectA();
    }
}

public class SomeClassB: SomeStrategy
{
    private SomeVariable someVariable; // Only for SomeClassB

    public SomeClassB(int a, int b)
    {
        someVariable = new SomeVariable();
    }

    public override void CreateSomeThing(ref SomeObject someObject)
    {
        someObject = new SomeObjectB();
    }
}

public class SomeFactory
{
    public SomeStrategy CreateSomeStrategy() => someEnum switch
    {
        SomeEnum.A => new SomeStrategyA(),
        SomeEnum.B => new SomeStrategyB(1, 2),
        _ => throw new ArgumentOutOfRangeException(nameof(someEnum), someEnum, null)
    };
}