From: Saku Ytti <saku@...>
Date: 2008-04-12T01:26:55+09:00
Subject: delete_if, select and (lack of) delete_if!, self.POLS == false

Hey everyone,

I was looking today for version of Array#select that would mutate the array
by deleting selected elements from it. 
I first looked at delete_if, then noticed that it actually mutates original
array and returns mutated array. I wonder would it make sense for delete_if
not to mutate and return new array and delete_if! to mutate and return deleted
elements?

Of course what I want is simple method to implement, it just seems pretty
typical desire for Array#select usage cases and also perhaps mutating
delete_if is as well bit unexpected? Problem is, suggested change would
break many current delete_if usage cases.

Thanks,
-- 
  ++ytti