From: Bertram Scharpf <lists@...>
Date: 2007-10-19T05:04:44+09:00
Subject: Re: array help


Hi,

Am Freitag, 19. Okt 2007, 04:05:55 +0900 schrieb JeremyWoertink@gmail.com:
> I have [1,2,3] and I want to return [1,2] is there already a method
> that does this?
> 
> irb(main):001:0> [1,2,3]
> => [1, 2, 3]
> irb(main):002:0> [1,2,3].pop
> => 3
> irb(main):003:0> [1,2,3].everything_but_the_one_thing_that_pop_returns

In case you really need the array _and_ its reduced version
you could do somthing like

  a = [1,2,3]
  (d = a.dup).pop
  d

The dup is inevitable and would be part of a inverse_pop
method if there were one.

Therefore I strongly recommend you consider another time
about what you want to achieve and how it is done best.
No harm meant,

Bertram



-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de