From: james.d.masters@...
Date: 2007-03-17T05:45:05+09:00
Subject: Issues using array.delete within a loop of the same array

This is a simplified example for what I'm trying to do but gets the
point across:

irb(main):001:0> a = [1,2,3,4,5]
=> [1, 2, 3, 4, 5]
irb(main):002:0> a.each {|e| a.delete e}
=> [2, 4]

I would expect the array to be emptied.  Insight please...

Yes, I know that there are other ways to empty an array (i.e. a =
[]).  My code is more complex and I'm more interested in why this is
happening and if there is a work-around for removing array items while
iterating over the same array.  There will be other cases in this code
where I will only want to remove some of the items.

Thanks in advance...