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Smalltalk Iteration

• The method whileTrue: from Block is used for pretest logical loops. It is defined for all blocks that return Boolean objects

      [count <= 20]
          whileTrue: [sum <- sum + count. 
                      count <- count + 1]
  

• timesRepeat: is defined for integers and can be used to build counting loops

      xCube <- 1.
      3 timesRepeat: [xCube <- xCube * x]