[Python-Dev] collections module

Fri Jan 9 11:17:28 EST 2004

 >> I'm neither a Smalltalk, C++ or Objective C programmer. How is a bag
 >> different from a set?
 Alex> In a bag, or multiset, a certain item can be in the collection a
 Alex> given _number_ of times, rather than just "either being there or
 Alex> not" as in a set.
Thx.
 >> Oddly enough, although we used collections heavily, I never really
 >> missed that functionality in Python. I implemented it once or twice,
 >> but never used it much. Different style of programming I guess.
 Alex> for item in collection: item.turn()
or
 Alex> collection.each(lambda x: x.turn())
In LYMB (using Python syntax) it would have been something more like
 all_actors.look_at(active_camera.position())
Hard to get any clearer than that. ;-)
It's pretty easily done with __getattr__.
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