Hi, this is my first post (please be gentle xD)

The #collect: message commonly return a new collection�like the receiver, but this is really unpractical in some cases

e.g.

In this example #sum will return 3 instead of 5 (I searched a test for #sum but I didn�t find it).

�

Ok, I can use the message #asBag (or something like that) but does the second line have to depend on the type of the�receiver (i.e. the type of col)?

For example, the implementation of #collect: in SortedCollection returns an OrderedCollection (in the current image) and in other dialects the message #collect: when the receiver is a Set returns a Bag ...

Basically, what do you think of an implementation like this?

�

�| newBag |
�newBag := Bag new: self size.
�array do: [:each | each ifNotNil: [newBag add: (aBlock value: each)]].
�^ newBag

Cordially,