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The answer produced by an ifTrue:,
ifFalse:, ifTrue:ifFalse:, or ifFalse:ifTrue: message
is the value produced by the evaluated block. The value produced by an
evaluated block is the value of the expression that constitutes the final
statement in the block. Accordingly, you can move the show: message
out of the block in analyzeCalories as defined in
Segment 151:
Integer method definition • instance analyzeCalories Transcript show: (self > 1600 ifTrue: ['You have had enough'] ifFalse: [(self < 1200) ifTrue: ['You need more'] ifFalse: ['You have eaten wisely']]); cr Workspace 1700 analyzeCalories. 1400 analyzeCalories. 1100 analyzeCalories Transcript You have had enough You have eaten wisely You need more
Note that the entire conditional expression is surrounded by
parentheses;
otherwise, Smalltalk would look for a show:ifTrue:ifFalse method,
and, failing to find one, Smalltalk would complain.