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You can embed a conditional expression inside another conditional expression. Yet another solution to the calorie-testing problem is as follows:
Integer method definition • instance analyzeCalories self > 1600 ifTrue: [Transcript show: 'You have had enough'; cr] ifFalse: [self < 1200 ifTrue: [Transcript show: 'You need more'; cr] ifFalse: [Transcript show: '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 ifTrue:ifFalse: expression's second argument is an
ifTrue:ifFalse: expression. This embedded ifTrue:ifFalse:
expression is evaluated only if the number of calories is 1600 or less.