Add fj.data.Either.leftMap, rightMap. #414
Description
Should be:
public final <X> Either<X, B> leftMap(final F<A, X> f) {
return left().map(f);
}
{{ message }}
Should be:
public final <X> Either<X, B> leftMap(final F<A, X> f) {
return left().map(f);
}