From: Brian Candler <B.Candler@...>
Date: 2007-02-24T00:25:53+09:00
Subject: Re: Ruby's "case" doesn't behave like a normal switch

On Fri, Feb 23, 2007 at 10:18:34PM +0900, Olivier Renaud wrote:
> Le vendredi 23 f�vrier 2007 11:30, Brian Candler a �crit�:
> > On Fri, Feb 23, 2007 at 02:05:10PM +0900, Guillaume Nargeot wrote:
> > > > case x
> > > >   when "this", "that"
> > > >     func_this_that()
> > > >   when "nothing"
> > > >     # something different
> > > > end
> > >
> > > Thank you very much !!!
> > > I thought I tested everything, but obviously not this one.
> > > I didn't even find anything about it in the official documentation.
> >
> > http://www.rubycentral.com/book/tut_expressions.html
> > Search down to the section headed "Case Expressions"
> 
> I didn't know about this syntax, either. Thanks, Eban ! For the Strings, I 
> thought about using Regex, instead :
> 
> case x
>   when /this|that/
>     func_this_that()
>   when "nothing"
>     # something different
> end

That's not the same though. I think you'd need:

  when /\A(this|that)\z/

(which is a gotcha if you come from Perl, and expect to use ^...$ to match
the start and end of the string)

Regards,

Brian.