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Category:Smalltalk: Difference between revisions
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As mentioned above, these are defined as messages and their implementation is found in the corresponding receiver classes. The following is only a tiny subset - there are virtually hundreds of uses of blocks for control structures in the system.
Typical are:
<lang smalltalk>boolean ifTrue: [ block providing value if boolean is true ]
boolean ifFalse: [ block providing value if boolean is false ]
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[ block for condition ] whileTrue: [ block to be looped over ]
n timesRepeat:
start to: stop do: [:i | block to be looped over with index ]
collection do: [:el | block to be evaluated for each element ]
collection reverseDo: [:el | block to be evaluated for each element ]</lang>
=== Exception Handling ===
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