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Best way to test if a directory is empty

Peter Marks

11/9/2007 6:54:00 AM

I see this question was asked a while back
(http://www.ruby-...t...), but I'm having trouble
implementing any of the solutions. I have tried:

if Dir["#{RAILS_ROOT}/documents/"].empty?

if catch('empty'){Dir.glob("#{RAILS_ROOT}/documents/"){throw 'empty'}}

if Dir.entries("#{RAILS_ROOT}/documents/") == []

, but none seem to work for me.
--
Posted via http://www.ruby-....
3 Answers

pphetra

11/9/2007 9:34:00 AM

0

On Nov 9, 1:54 pm, Peter Marks <petertma...@gmail.com> wrote:

> if Dir["#{RAILS_ROOT}/documents/"].empty?

try this.

if Dir["#{RAILS_ROOT}/documents/*"].empty?

Peter Marks

11/9/2007 10:58:00 AM

0

pphetra wrote:
> try this.
>
> if Dir["#{RAILS_ROOT}/documents/*"].empty?

Ahh, didn't see the stars. Thanks pphetra :)
--
Posted via http://www.ruby-....

Robert Klemme

11/9/2007 5:45:00 PM

0

2007/11/9, Peter Marks <petertmarks@gmail.com>:
> I see this question was asked a while back
> (http://www.ruby-forum.com/t...), but I'm having trouble
> implementing any of the solutions. I have tried:
>
> if Dir["#{RAILS_ROOT}/documents/"].empty?

You need the star here as well - as you probably know by now.

> if catch('empty'){Dir.glob("#{RAILS_ROOT}/documents/"){throw 'empty'}}

I guess that should rather read

unless catch('non_empty'){Dir.glob("#{RAILS_ROOT}/documents/*"){throw
'non_empty'}}

Or am I missing something?

> if Dir.entries("#{RAILS_ROOT}/documents/") == []

(see above)

> , but none seem to work for me.

Cheers

robert

--
use.inject do |as, often| as.you_can - without end