From: Robert Klemme <shortcutter@...>
Date: 2007-07-13T16:49:30+09:00
Subject: Re: Regexp Question - Merb::Router

2007/7/13, Daniel N <has.sox@gmail.com>:
> Hi,
>
> I'm looking through the Merb::Routing code and I've found a regexp that I
> can't figure out how it works.
>
> Merb::Router::SECTION_REGEXP  #=> /(?::([a-z*_]+))/
>
> It takes a route definition string, like "/products/:model/:id"  and
> extracts the "model" string on the first pass, and later  the "id" string.
>
> Can anyone shed some light on what the
> ?::
> part does?  I haven't found it in any of the documentation for Ruby Regexps
> that I've found.

It's actually *two* parts: (?:) is a non capturing regexp group.  The
second ":" literally matches a single colon.

Kind regards

robert