A-M baby

Task/Function-composition/Java/function-composition-2.java

@@ -0,0 +1,13 @@
+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"
+    }
+}