From: Joel VanderWerf <vjoel@...>
Date: 2007-05-21T04:26:05+09:00
Subject: Re: Pathname ascend and descend inclusive parameter

TRANS wrote:
> I would like to suggest that Pathname#ascend  and Pathname#descend
> have an inclusion-flag parameter added to them to specify if the given
> path should be included in the iteration or not. The default could be
> true for backward compatibility. Eg.
> 
> Pathname.new('/path/to/some/file.rb').ascend {|v| p v}
>    #<Pathname:/path/to/some/file.rb>
>    #<Pathname:/path/to/some>
>    #<Pathname:/path/to>
>    #<Pathname:/path>
>    #<Pathname:/>
> 
> Pathname.new('/path/to/some/file.rb').ascend(false) {|v| p v}
>    #<Pathname:/path/to/some>
>    #<Pathname:/path/to>
>    #<Pathname:/path>
>    #<Pathname:/>

The following gives the same output:

path = Pathname.new('/path/to/some/file.rb')
path.parent.ascend {|v| p v}

Is it better in some cases to control this behavior by argument passing 
rather than by calling an extra method?

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407