[Newbies] collection enumeration

[Mathieu]

cdrick a écrit :
>> This can be fast if collection is an array and if you say "1 to:
>> collection do: [:index | ..."
>> instead of creating an interval.  The compiler cheats for to:do: on a
>> SmallInteger and doesn't create the block.  But I would only use this
>> if the profiler showed it was a real improvement.  Almost always I
>> would use option C.
> 
> same here or the method Bert has given.. #withIndexDo:


It's strange that we have #withIndexDo: and #keysAndValuesDo: doing the
same things on SequenceableCollection.

For me #keysAndValuesDo: take more sense in a dictionary. (?)

Math