From: Daniel Berger <djberg96@...>
Date: 2005-10-21T20:16:59+09:00
Subject: Re: A comparison by example of keyword argument styles

Trans wrote:
> Why not a Parameters class. This would allow cool things like:
>
>   a = [ :a, :b, :c ]
>
>   def foo(a.to_parm)  #as def foo(a,b,c)
>     #...
>   end
>
> And it would be more useful in the def too (Although maybe this would
> be a different class):
>
>   def foo(**parm)
>     p parm.arguments
>     p parm.named_arguments
>     p parm.block.call
>   end
>
>   foo(1,2,:a=>3){ "block" }
>
>   => [1,2]
>      {:a=>3}
>      "block"

Sydney will accomplish this via behaviors:

# This is *not* finalized
def foo(*parm)
   p KeywordBehavior.arguments
   p KeywordBehavior.keyword_arguments
end

Abstracting it out to a generic "Parameter" behavior is something I
hadn't thought of, but knowing Evan, it just might be possible. :)

Regards,

Dan