"
COPYRIGHT (c) 1989-93 by Claus Gittinger
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
Object subclass:#Association
instanceVariableNames:'key value'
classVariableNames:''
poolDictionaries:''
category:'Collections-Support'
!
Association comment:'
COPYRIGHT (c) 1989-93 by Claus Gittinger
All Rights Reserved
Associations are a key-value pair; they are the elements of Dictionaries -
storing value under the key. By itself, an Association is not very
useful.
Instance variables:
key <Object> the key
value <Object> the value
$Header: /cvs/stx/stx/libbasic/Association.st,v 1.3 1993-10-13 00:14:40 claus Exp $
'!
!Association class methodsFor:'instance creation'!
key:aKey
"return a new Association."
^ self basicNew key:aKey
!
key:aKey value:aValue
"return a new Association"
^ self basicNew key:aKey value:aValue
! !
!Association methodsFor:'accessing'!
key
"return the key of the association"
^ key
!
key:anObject
"set the key of the receiver to be anObject.
Return the receiver"
key := anObject
!
value
"return the value of the association"
^ value
!
value:anObject
"set the value of the receiver to be anObject.
Return the receiver"
value := anObject
!
key:aKey value:aValue
"set both the key and value of the receiver.
Return the receiver"
key := aKey.
value := aValue
! !
!Association methodsFor:'comparing'!
= anAssociation
(anAssociation isKindOf:Association) ifTrue:[
(anAssociation key = key) ifTrue:[
^ anAssociation value = value
]
].
^ false
! !
!Association methodsFor:'printing & storing'!
printString
"return a string containing a printable representation
of the receiver"
^ key printString , '->' , value printString
!
displayString
"return a string containing a printable representation
of the receiver for displaying"
^ key displayString , '->' , value displayString
! !