Higher kind type parameter sample for groovy

gistfile1.txt

import java.util.function.*;

interface Functor<T,R> {
    public R fmap(Function<T,R> func, T t);
}

interface Applicative<A,T,R> extends Functor<T,R> {
    public A<T> pure(T t);
    public A<T> ap(A<Function<T,R>> func, A<R> a); // <*> :: f (a -> b) -> f a -> f b 
}