From: Robert Klemme <shortcutter@...>
Date: 2008-12-19T07:42:09+09:00
Subject: Re: Show newest file in directory?

On 18.12.2008 20:52, Mark Thomas wrote:
> On Dec 18, 12:36 pm, Mmcolli00 Mom <mmc_coll...@yahoo.com> wrote:
>> If you have a directory full of files, how can you get the newest file
>> and oldest file from that directory?
> 
> One way...
> 
>   ages = Dir["C:/New"].map{|f| [f,File.mtime(f)] }.sort_by{|i|i[1]}

IMHO that should read

ages = Dir.entries("C:/New").map{|f| 
[f,File.mtime(File.join("C:/New",f))] }.sort_by{|i|i[1]}

But:

> Or, if you want it in one fell swoop:
> 
>   newest, oldest = Dir["C:/New"].map{|f| [f,File.mtime(f)] }.sort_by{|
> i|i[1]}.map{|i| i[0]}.values_at(0,-1)

We can do better, i.e. #map is superfluous

sorted = Dir.entries(dir).sort_by {|f| File.mtime(File.join(dir,f))}
puts sorted.first, sorted.last

Kind regards

	robert


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