From: Michael Fellinger <m.fellinger@...>
Date: 2011-01-09T03:39:32+09:00
Subject: Re: file list sorted by creation date

On Sat, Jan 8, 2011 at 6:45 PM, zuerrong <zuerrong@gmail.com> wrote:
> Or use a Swatz* Transform which is used by sort_by inherently:
>
> Dir.entries(".").map{|c| [c,File.stat(c).ctime]}.sort{|a,b|
> a[1]<=>b[1]}.map{|d| d[0]}
>
> * Swatz is a Perl hacker whose full name is Randal Swatz (hope me
> remember that correctly).

You mean Randal Schwartz and his Schwartzian transform:
https://secure.wikimedia.org/wikipedia/en/wiki/Schwartzian_transform

As you said, sort_by implements that already, so it's faster to use it
instead directly.

>
> 2011/1/8 zuerrong <zuerrong@gmail.com>:
>> 2011/1/8 Rajarshi Chakravarty <raj_plays@yahoo.com>:
>>> Hi,
>>> I need to get a list of all files in a directory sorted by their
>>> date/time of creation.
>>
>> sort_by it:
>>
>> Dir.entries(".").sort_by{|c| File.stat(c).ctime}



-- 
Michael Fellinger
CTO, The Rubyists, LLC