Class Ranger

java.lang.Object
  |
  +--Ranger

All Implemented Interfaces:

Function1

class Ranger

extends java.lang.Object

implements Function1

A Ranger is a Function1 object that produces a list of number from a start number up to including the argument number. The start number is specified in the constructor. So a Ranger can be used as the argument to map or mappend, for example.

Field Summary

private java.lang.Number	increment
private java.lang.Number	start The starting number in the range to be produced.

Constructor Summary

(package private)

Ranger(java.lang.Number _start, java.lang.Number _increment) Create a Ranger with a specific start and increment.

Method Summary

java.lang.Object	apply(java.lang.Object stop) Apply this Ranger object to an Object x, which should be a Number.
static OpenList	range(java.lang.Number start, java.lang.Number stop, java.lang.Number increment) Create an ascending list beginning with start, up to and including stop.

Methods inherited from class java.lang.Object

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

Field Detail

start

private java.lang.Number start

The starting number in the range to be produced.

increment

private java.lang.Number increment

Constructor Detail

Ranger

Ranger(java.lang.Number _start,
       java.lang.Number _increment)

Create a Ranger with a specific start and increment.

Parameters:

_start - the starting Number to be used.

_increment - the increment Number to be used.

Method Detail

range

public static OpenList range(java.lang.Number start,
                             java.lang.Number stop,
                             java.lang.Number increment)

Create an ascending list beginning with start, up to and including stop.

Returns:

a list consisting of start to stop, incremented by increment.

apply

public java.lang.Object apply(java.lang.Object stop)

Apply this Ranger object to an Object x, which should be a Number. If x is not a number, a ClassCastException will be thrown.

Specified by:

apply in interface Function1

Returns:

a Double containing this Ranger's start times the argument's value