eu.gressly.util
Class Sequencer

java.lang.Object
  eu.gressly.util.Sequencer

public class Sequencer
extends java.lang.Object

Version:

1.2: 2013-07-03 A simple to use "Integer"-sequecer for the java "foreach" loop. Provides Iterators like ord() and card(). Simply use for(int x : range(min, max)) instead of incrementing yourself: for(int x = min; x <= max; x = x + 1). Example to produce all domino stones:

 import static ch.programmieraufgaben.iteration.Sequencer.seq;
 
 for(int first : card(6)) {
          for(int second : range(first, 6)) {
              System.out.println("("+ first + "|" + second + ")");
          }
      }

Or simply use a code 100 times:

   for(int i : ord(100)) { 
   myCode(i); }
 

History: first Implementation: May 26, 2009 Bugs : not yet known any, not yet known all.

Author:

phi@gressly.eu

Constructor Summary

Sequencer()

Method Summary

static java.lang.Iterable<java.lang.Integer>	card(int max) Cardinal numbers (starting at 0) ending at "max" (inclusive).
static java.lang.Iterable<java.lang.Integer>	ord(int last) Ordinal numbers (starting at 1 = "first"; 2 = "second"; ...) ending at "last" (inclusive).
static java.lang.Iterable<java.lang.Integer>	range(int min, int max) Another word for seq.
static java.lang.Iterable<java.lang.Integer>	seq(int min, int max) Sequencer starting from "min" (inclusive) ending at "max" (inclusive) Use like this: for(int x : seq(7, 9)) { doSomething(x); }

Methods inherited from class java.lang.Object

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

Constructor Detail

Sequencer

public Sequencer()

Method Detail

seq

public static java.lang.Iterable<java.lang.Integer> seq(int min,
                                                        int max)

Sequencer starting from "min" (inclusive) ending at "max" (inclusive) Use like this: for(int x : seq(7, 9)) { doSomething(x); }

range

public static java.lang.Iterable<java.lang.Integer> range(int min,
                                                          int max)

Another word for seq.

See Also:

seq()

ord

public static java.lang.Iterable<java.lang.Integer> ord(int last)

Ordinal numbers (starting at 1 = "first"; 2 = "second"; ...) ending at "last" (inclusive). Ordinal numbers always start at first (1.). Use like this: for(int x : ord(6)) { diceNumber(x); }

card

public static java.lang.Iterable<java.lang.Integer> card(int max)

Cardinal numbers (starting at 0) ending at "max" (inclusive). Cardinal numbers describe "how many elements" (this can be zero). Use like this: for(int x : card(9)) { everyDigit(x); }