From: "Weirich, James" <James.Weirich@...>
Date: 2003-09-13T02:59:42+09:00
Subject: Re: Dir.foreach not with patterns?

I like the Dir[] form (or its "glob" alternative).  I used to write
recursive functions to search a directory tree.  Then I discovered
Dir['**/*.rb'].  Not only is it easier, it's also faster.

-- 
-- Jim Weirich / Compuware
-- FWP Capture Services
-- Phone: 859-386-8855



> -----Original Message-----
> From: dblack@superlink.net [mailto:dblack@superlink.net] 
> Sent: Friday, September 12, 2003 1:44 PM
> To: ruby-talk@ruby-lang.org
> Subject: Re: Dir.foreach not with patterns?
> 
> 
> Hi --
> 
> On Sat, 13 Sep 2003, Kurt V. Hindenburg wrote:
> 
> > Why does the third one not work as expected?  It appears that
> > Dir.foreach will not work with patterns...
> >
> > #!/usr/bin/ruby
> >
> > s = "/etc/host*"
> >
> > #1
> > l = Dir[s]
> > p l
> >
> > #2
> > Dir.foreach("/etc") { |d|   p d }
> >
> > #3
> > Dir.foreach(s) { |d|  p d }
> >
> > #4
> > # This is wasteful
> > l = Dir[s]
> > l.each { |f| p f }
> 
> You don't need two lines, though -- you can do this in a way 
> that's actually
> shorter than #3:
> 
>   Dir[s].each {|f| p f}
> 
> 
> David
> 
> -- 
> David Alan Black
> home: dblack@superlink.net
> work: blackdav@shu.edu
> Web:  http://pirate.shu.edu/~blackdav
> 
>