From: Michael Edgar <michael.j.edgar@...>
Date: 2011-06-27T03:23:08+09:00
Subject: [ruby-core:37543] [Ruby 1.9 - Feature #4553] Add Set#pick and Set#pop


Issue #4553 has been updated by Michael Edgar.


Any update on this? It seems like a reasonable hole to fill in Ruby 1.9.3.
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Feature #4553: Add Set#pick and Set#pop
http://redmine.ruby-lang.org/issues/4553

Author: Michael Edgar
Status: Open
Priority: Low
Assignee: 
Category: 
Target version: 


=begin
A very common operation on sets is to take an arbitrary element from them at O(1) cost. I know typically
it's suggested that library additions go out as a gem to see community review. However, to me it seems
to be a glaring omission to lack such an operation on a built-in, fundamental data structure, so I've
gone straight to the bug tracker.

I wasn't too sure which method names to use as I've often heard "take" in lieu of "pop," so I just used the
names Wikipedia uses. Consider them flexible. "Pick" selects an arbitrary element, and "pop" selects and
deletes it.

I've provided a very simple patch that implements the necessary behavior. Thoughts?
=end



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