RosettaCodeData/Task/Function-composition/Java/function-composition-3.java

14 lines
386 B
Java

import java.util.function.Function;
public class Compose {
public static <A,B,C> Function<A,C> compose(Function<B,C> f, Function<A,B> g) {
return x -> f.apply(g.apply(x));
}
public static void main(String[] args) {
Function<Double,Double> sin_asin = compose(Math::sin, Math::asin);
System.out.println(sin_asin.apply(0.5)); // prints "0.5"
}
}