Class: LookupKey

• Inheritance
• Description
• Class protocol
  • instance creation
• Instance protocol
  • accessing
  • comparing
  • printing & storing

Inheritance:

   Object
   |
   +--Magnitude
      |
      +--LookupKey
         |
         +--Association

Package:

stx:libbasic

Category:

Collections-Support

Version:

rev: 1.15 date: 2021/01/20 14:09:29

user: cg

file: LookupKey.st directory: libbasic

module: stx stc-classLibrary: libbasic

Description:

LookupKey has been extracted from Association for ST-80 compatibility.
This class is currently not used directly.

[Instance variables:]

    key             <Object>        the key

copyright
COPYRIGHT (c) 1994 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.

Class protocol:

 key: aKey

return a new instance.

Instance protocol:

 key

return the key of the receiver

 key: anObject

set the key of the receiver to be anObject.
Return the receiver

 < aKey

return true, if the receiver's Key is less than the argument's key.
The argument must be a kind of lookupKey

 = aLookupKey

return true if the receiver's key equals the argument's key.
The argument must be a kind of lookupKey.

 > aKey

return true, if the receiver's Key is greater than the argument's key.
The argument must be a kind of lookupKey

 hash

return an integer useful for hashing on the receiver;
redefined since = is redefined here.

 displayOn: aGCOrStream

Compatibility
append a printed desription on some stream (Dolphin, Squeak)
OR:
display the receiver in a graphicsContext at 0@0 (ST80).
This method allows for any object to be displayed in some view
(although the fallBack is to display its printString ...)

 printOn: aStream

append a user printed representation of the receiver to aStream.
The format is suitable for a human - not meant to be read back.