Minimize Boilerplate

Question

I need to implement some classes that inherit from the interface below. Many of the implementations differ only in the value returned by P. How can I minimize the number of lines of code?

public class A // I cannot change it
{
    public A(string _) { }
    //...
}

public interface I // I cannot change it
{
    A P { get; }
    void f();
    //...
}

public class B : I // many similar classes: they differ by signature, only
{
    public static A StaticP => new A("signature");

    public A P => StaticP;

    public void f()
    {
        //...
    }

    //...
}

I’m voting to close this question because it is asking for a [codereview.se] — Daniel A. White, Nov 12 '22 at 23:00
@DanielA.White I'm not sure that asking for a solution is equivalent to _code review_. — CFlat, Nov 12 '22 at 23:06
You don't have to change `I` - just implement `I` in a base class that `B` and the rest of the classes inherit. — Camilo Terevinto, Nov 12 '22 at 23:06
@pm100 Is it possible to pass the signature as a template parameter? I'm using c# version 7.x. — CFlat, Nov 12 '22 at 23:11
you can have the signature as an argument of the constructor — pm100, Nov 12 '22 at 23:11

user700390 · Accepted Answer · 2022-11-12T23:13:07.290

1

You can move the code from f(), etc. into an abstract base class. Something like this:

public abstract class BaseI : I
{
    public abstract A P { get; }

    public void f()
    {
        //...
    }

    //...
}

public class B : BaseI
{
    public static A StaticP => new A("signature");

    public override A P => StaticP;
}

edited Nov 12 '22 at 23:13

answered Nov 12 '22 at 23:01

user700390

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Minimize Boilerplate

1 Answers1