EitherPartial.java

EitherPartial.java

public abstract class Either<L, R>{

    //used for pattern matching on contained value and processing/transforming it using some function
    public abstract <T> T match(Function<L, T> a, Function<R, T> b);
    
    //used to apply/compose functions which accapet a R (right) value and return an Either
    //very useful to chain "either computations"
    public abstract <S> Either<L, S> bind(Function<R, Either<L, S>> f);
    
    //used to apply a simple generic R to S function on the R value contained inside an Either
    //enables re-use of non-Either functions in the Either context
    public abstract <S> Either<L,S> fmap(Function<R, S> f);
    
}