From: Phrogz <phrogz@...>
Date: 2007-07-27T06:40:00+09:00
Subject: Re: List of directory.

On Jul 26, 4:54 am, Marcin Tyman <m.ty...@interia.pl> wrote:
> Does anybody know how to list directory in alphabetical order? i.e.
> I have following files:
> a10
> a1
> a2
> a20
>
> sort method sorts them as follows:
>
> a1
> a10
> a2
> a20
>
> but I need such order:
>
> a1
> a2
> a10
> a20

files = %w| a1 ab1a ab1b ac1 a2 ab2 ab3 b1 bb1 ba1 a10 a20 a10a a aa
ab ac |
puts files.sort_by{ |f|
  f.split( /(\d+)/ ).map{ |piece|
    Integer(piece) rescue piece
  }
}

#=> a
#=> a1
#=> a2
#=> a10
#=> a10a
#=> a20
#=> aa
#=> ab
#=> ab1a
#=> ab1b
#=> ab2
#=> ab3
#=> ac
#=> ac1
#=> b1
#=> ba1
#=> bb1