(Dir.glob("#{@path}/**/*/**") | Dir.glob("#{@path}/**")) != Dir.glob("#{@path}/**")?

Rails
1

I tried to ask this question once in Ruby-talk and inside another post
in
this list. No one answered me and I doubt anyone is able to answer it.

So, I tried changing the subject in a weird, although correct question,
to
see if someone could help me.

In actionpack/lib/action_view/paths.rb, there is the following snippet:

def templates_in_path
(Dir.glob("#{@path}//*/") | Dir.glob("#{@path}/**")).each do
|file|
unless File.directory?(file)
yield Template.new(file.split("#{self}/").last, self)
end
end
end

That got me intrigued. What is the difference between
Dir.glob("#{@path}//*/") | Dir.glob("#{@path}/")
and just
Dir.glob("#{@path}/")
?

Thanks, Rodrigo.

2

On 9 Sep 2008, at 14:27, Rodrigo Rosenfeld R. wrote:

snippet:
That got me intrigued. What is the difference between
Dir.glob("#{@path}//*/") | Dir.glob("#{@path}/**")
and just

Did you try running them ? Two minutes in the console seems to
indicate that “#{@path}//*/” matches files inside those folders as
many levels down as you want

whereas "#{@path}/** just lists those folders in @path

Fred

Dir.glob("#{@path}/**")

3

Frederick C. wrote:

question, to
end

whereas "#{@path}/** just lists those folders in @path

Fred

Ok, I got, they are different. But playing a bit more with glob, I found
out
that (or, at least, it seems to):

Dir.glob("#{@path}/**") == Dir.glob("#{@path}/*")

and
(Dir.glob("#{@path}//*/") | Dir.glob("#{@path}/")) ==
(Dir.glob("#{@path}///**") | Dir.glob("#{@path}/")) ==
Dir.glob("#{@path}/**/*")

Except for order. To be sure, try this:
(Dir.glob("#{@path}//*/") | Dir.glob("#{@path}/")).sort ==
Dir.glob("#{@path}/**/")Dir.glob("#{@path}/**/*").sort

So, I would change my question:

Wouldn’t
Dir.glob("#{@path}//*")
be a better replacement to
Dir.glob("#{@path}//*/") | Dir.glob("#{@path}/")
?

Rodrigo.