Just a quick thought: <br><br>select: selectBlock thenCollect: collectBlock<br><br>��� | newCollection |<br>��� newCollection := self species new.<br>��� self do: [:each | (selectBlock value: each) ifTrue: [newCollection add: (collectBlock value: each)]].<br>
��� ^newCollection<br><br>But, we can not say that is going to be faster always... if newCollection grows too much, it could be slower. Also it wont work on SortedCollection becuase SortedCollection has to return an OrderCollection and species returns a SortedCollection... I did not see test for this message, it would be great to have them and try :-)<br>
<br><div class="gmail_quote">On Wed, Jul 15, 2009 at 5:01 PM, St�phane Ducasse <span dir="ltr">&lt;<a href="mailto:stephane.ducasse@inria.fr">stephane.ducasse@inria.fr</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi all<br>
<br>
apparently<br>
<br>
Collection&gt;&gt;select: selectBlock thenCollect: collectBlock<br>
 � � � �&quot;Utility method to improve readability.&quot;<br>
<br>
 � � � �^ (self select: selectBlock) collect: collectBlock<br>
<br>
so it would be good to avoid to do two passes on the same collection.<br>
Any takers?<br>
<br>
Stef<br>
<br>
<br>
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