From: dblack@...
Date: 2005-12-28T02:49:18+09:00
Subject: Re: Found a neat trick for doing recursive one-liners

On Wed, 28 Dec 2005, ara.t.howard@noaa.gov wrote:

> On Wed, 28 Dec 2005 dblack@wobblini.net wrote:
>
>> Hi --
>> 
>> On Wed, 28 Dec 2005, ara.t.howard@noaa.gov wrote:
>> 
>>> On Tue, 27 Dec 2005, Philip Rhoades wrote:
>>>
>>>>>    ruby -e'  puts Dir["**/**"].select{|e| e =~ /a.rb/}  '
>>>> 
>>>> 
>>>> That doesn't seem to do anything . .
>>> 
>>> then you probably don't have any files named 'a.rb' under the current
>>> directory - i seem to have several hundred ;-)
>> 
>> Or abrb, or acrb, or airbag, or....  :-)
>
> indeed.  or diectories.  that's the nice thing about using select:
>
>  ruby -e'  puts Dir["**/**"].select{|e| test ?f, e and e =~ /^a\.rb$/}  '

I was just obliquely pointing out the lack of ^ and \. and $ :-)  But
it's true that Dir.[] is not very seletcive....  In fact, I think I
once submitted an RCR to let it take a second argument that would be
tested for (like: Dir["**/**"],?f]) but it was rejected.  So here I am
several years later still acting as if Dir.[] could read my mind....


David

-- 
David A. Black
dblack@wobblini.net

"Ruby for Rails", from Manning Publications, coming April 2006!
http://www.manning.com/books/black