From: Robert Klemme <shortcutter@...>
Date: 2008-10-31T17:11:33+09:00
Subject: Re: how to sort this array

2008/10/31 botp <botpena@gmail.com>:
> On Fri, Oct 31, 2008 at 5:14 AM, Li Chen <chen_li3@yahoo.com> wrote:
>> expected results:
>> [ "c:/ruby/self/2004/1.txt",
>> "c:/ruby/self/2004/2.txt",
>> "c:/ruby/self/2004/3.txt",
>> "c:/ruby/self/2004/10.txt",
>>  "c:/ruby/self/2004/20.txt",
>>]
>
> apology in advance for dupl email. i sent an email an hrs back but it
> seems it got blackholed :)
>
> anyway, if you want basename numeric sorting, then just do
>
> eg,
>
>   files.sort_by{|f| File.basename(f).to_i}

Very elegant!  Here's another variant

irb(main):013:0> puts files.sort_by {|f| f[/\d+(?=\.txt$)/].to_i}
c:/ruby/self/2004/1.txt
c:/ruby/self/2004/2.txt
c:/ruby/self/2004/3.txt
c:/ruby/self/2004/10.txt
c:/ruby/self/2004/20.txt
=> nil

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end