do this without using an “if” | if(s == “value1”){…} else if(s == “value2”) { …}

Question

According to anti-if campaign it is a best practice not to use ifs in our code. Can anyone tell me if it possible to get rid of the if in this piece of code ? (switch is also

Answer 1

Make use of the strategy pattern.

In Java terms:

public interface Strategy {
    void execute();
}

public class SomeStrategy implements Strategy {
    public void execute() {
        System.out.println("Some logic.");
    }
}

which you use as follows:

Map strategies = new HashMap();
strategies.put("strategyName1", new SomeStrategy1());
strategies.put("strategyName2", new SomeStrategy2());
strategies.put("strategyName3", new SomeStrategy3());

// ...

strategies.get(s).execute();