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Text File  |  1990-04-18  |  450 b   |  18 lines
  1. Class True :Boolean
  2. [
  3.         ifTrue: trueAlternativeBlock ifFalse: falseAlternativeBlock
  4.                 ^ trueAlternativeBlock value
  5.  
  6. !       ifFalse: falseAlternativeBlock ifTrue: trueAlternativeBlock
  7.                 ^ trueAlternativeBlock value
  8.  
  9. !       ifTrue: trueAlternativeBlock
  10.                 ^ trueAlternativeBlock value
  11.  
  12. !       ifFalse: falseAlternativeBlock
  13.                 ^ nil
  14.  
  15. |       not
  16.                 ^ false
  17. ]
  18.