On Thu, May 8, 2008 at 11:31 PM, Nobuyoshi Nakada <nobu@[...].org>  wrote:
>  Hi,
> 
>  At Thu, 8 May 2008 21:49:06 +0900,
>  Rick DeNatale wrote in [ruby-talk:301103]:
> > And in Ruby 1.9 you can also use the new hash literal syntax in the
> > call so it becomes:
> >
> >    contains_point x: value y: value
> 
>  You forgot a comma between first value and y:.

You are correct of course, thanks.

> > However, the semantics of Ruby keyword/hash option parameters are
> > slightly different from the Smalltalk inspired Objective-C method
> > selectors. In Smalltalk/ObjectiveC   x:y: is a different message and
> > will find a different method than y:x:, whereas Ruby keyword/hash
> > parameters are order independent and aren't involved in resolving a
> > message to a method.
> 
>  And the same selector can duplicate, x:x:x: is valid and
>  differs from x:, but it's impossible with a hash.

Good point.

-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/