org.waterken.factorial
Class Factorial

java.lang.Object
  org.waterken.factorial.Factorial

public final class Factorial
extends java.lang.Object

A tail recursive factorial implementation.

Nested Class Summary

static interface

Factorial.Recursion The inner loop of a tail recursive factorial implementation.

Method Summary

static Promise<java.lang.Integer>

make(Eventual _, int n) Computes a factorial.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

make

public static Promise<java.lang.Integer> make(Eventual _,
                                              int n)

Computes a factorial.

Parameters:

_ - eventual operator

n - >= 0

Returns:

promise for the factorial of n