November 01, 2005
Functional Programming in Java
(a)
public class Add
extends Function.O2<Integer, Integer, Integer> {
private Add() {}
public static final Add INSTANCE = new Add();
public Integer call(Integer x, Integer y) { return x + y; }
}
(b)
Fcn<Integer, Integer> inc = Add.INSTANCE.x(1);
System.out.println("Inc 5 = " + inc.x(5));
(c)
Transform.FcnObject<Integer, Integer>
incList = Transform.make(inc);
System.out.println("inc list = " +
incList.x(Arrays.asList(2, 4, 8, 16, 32))
.x(new LinkedList<Integer>()).toString());
Example 1: (a) The add function; (b) an increment function object, inc, would then have type Fcn<Integer, Integer>; (c) using the Transform function object.
Previous Page |
1
|
2
|
3
Next Page
|
 |
|
|||||||||||||||||||||||||||
|
|
|
