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Class: ValueHolderWithRememberedPreviousValue


Inheritance:

   Object
   |
   +--Model
      |
      +--ValueModel
         |
         +--ValueHolder
            |
            +--ValueHolderWithRememberedPreviousValue

Package:
stx:libview2
Category:
Interface-Support-Models
Version:
rev: 1.2 date: 2014/01/13 13:40:04
user: cg
file: ValueHolderWithRememberedPreviousValue.st directory: libview2
module: stx stc-classLibrary: libview2
Author:
Claus Gittinger

Description:


I implement a valueHolder which remembers the previous value whenever changed.


Instance protocol:

accessing
o  previousValue

o  setValue: anObject
set my value without notification.



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