From: "mame (Yusuke Endoh)" <mame@...>
Date: 2012-11-20T21:29:06+09:00
Subject: [ruby-core:49707] [ruby-trunk - Feature #4553] Add Set#pick and Set#pop


Issue #4553 has been updated by mame (Yusuke Endoh).

Target version set to next minor


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Feature #4553: Add Set#pick and Set#pop
https://bugs.ruby-lang.org/issues/4553#change-33232

Author: adgar (Michael Edgar)
Status: Assigned
Priority: Low
Assignee: knu (Akinori MUSHA)
Category: 
Target version: next minor


=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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