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Quote: Smalltalk uses 'false' and 'true' objects for control; 'false' ignores 'ifTrue:' and evaluates 'ifFalse:'
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program blocks for control
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The expression queue isEmpty ifTrue: [index <- 0] ifFalse: [index <- queue next] evaluates the expressions in the first block if the receiver … The representation of conditions in the Smalltalk-80 system … When ifTrue: is sent to false, it returns … Google-1 Google-2
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Topic: program blocks for control (20 items)