Set class

Detailed Description

A simple set class that contains a number of distinct string elements.

Modules
	Relationship class
	The empty set.

Functions
Set	new (var copy)
	The Set ructor (can be used as a copy ructor) More...
Set	clear ()
	Removes all elements from the set. More...
Set	add (var value)
	Add an element to a set. More...
Set	remove (var value)
	Remove an element from a set. If the element is not in the set, then this method does nothing. More...
	Set.union (var set1, var set2)
	Creates a union of two existing sets. More...
Set	isMember (var value)
	Tests for existence of an element in a set. More...
Set	getValues ()
	Returns a reference to the element array used by the set (unsafe) More...
Set	getSize ()
	Returns the number of elements in the set. More...
Set	toString ()
	Converts a set to a string representation. More...
	Set.fromString (var str)
	Converts a string back to a set (the complement of toString()) More...

Function Documentation

Set add

(

var

value

)

Add an element to a set.

Parameters

value

the element to add (must be a string)

Grid clear

(

)

Removes all elements from the set.

Removes all relations.

Set getSize

(

)

Returns the number of elements in the set.

Returns

the number of elements in the set

Set getValues

(

)

Returns a reference to the element array used by the set (unsafe)

Returns

a reference to the element array used by the set (unsafe)

Set isMember

(

var

value

)

Tests for existence of an element in a set.

Parameters

value

the element to test

Returns

true if the value is in the set, or false otherwise

Set new

(

var

copy

)

The Set ructor (can be used as a copy ructor)

Parameters

copy	an exisiting set to make a copy of

Returns

a new instance of Set

Set remove

(

var

value

)

Remove an element from a set. If the element is not in the set, then this method does nothing.

Parameters

value

the element to remove (must be a string)

Set.fromString

(

var

str

)

Converts a string back to a set (the complement of toString())

Returns

a new instance of set corresponding to the supplied string

Note

Only works for strings containing only alphabetic characters. like EUR, GBP etc.

Set.union	(	var	set1,
		var	set2
	)

Creates a union of two existing sets.

Parameters

set1	the first set
set2	the second set

Returns

a new set containing all elements from set1 and set2

Set toString

(

)

Converts a set to a string representation.

Returns

a comma-separated list of the elements in the set