hahhha thanks Nicolas..I was sure somewhere it should be...I was blind...weird I check there!!! thanks a lot. mariano On Wed, Mar 10, 2010 at 2:07 PM, Nicolas Cellier < nicolas.cellier.aka.nice@gmail.com> wrote:
self collect: aBlock as: Set
2010/3/10 Mariano Martinez Peck <marianopeck@gmail.com>:
Hi. I was needing something like the SQL select distinct, that doesn't take into account repeated objects. I didn't found anything useful in Collection, and thus, I have implemented this:
Collection >> collectDistinct: aBlock
collectDistinct: aBlock "Evaluate aBlock with each of the receiver's elements as the argument. Collect the resulting values into a Set, thus repeated objects will not be present. Answer the new collection."
| newSet | newSet := self species new asSet. self do: [:each | newSet add: (aBlock value: each)]. ^ newSet
Is there a better way ? Do you think it make sense to put this in Pharo ?
Cheers
Mariano
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