From: David Alan Black <dblack@...>
Date: 2004-05-09T21:33:55+09:00
Subject: Re: How to get the last 5 elements of an array?

Hi --

"Robert Klemme" <bob.news@gmx.net> writes:

> "Harry Ohlsen" <harryo@zip.com.au> schrieb im Newsbeitrag
> news:409CD011.4040905@zip.com.au...
> >
> > How about ...
> >
> >   def last5(arr)
> >      if arr.length < 5
> >         arr.dup
> >       else
> >         arr[-5, 5]
> >       end
> >    end
> 
> Not general enough.  Rather
> 
> irb(main):001:0> class Array;def last(n);size>=n ? self[-n .. -1] :
> self;end;end
> => nil
> irb(main):002:0> [1,2].last 5
> => [1, 2]
> irb(main):003:0> [1,2,3,4,5,6,7].last 5
> => [3, 4, 5, 6, 7]

Isn't that how Array#last works now?


David

-- 
David A. Black
dblack@wobblini.net