From: ara howard <ara.t.howard@...>
Date: 2008-02-29T02:29:37+09:00
Subject: Re: Named sprintf parameters


On Feb 28, 2008, at 9:57 AM, Trans wrote:

> I have a question and perhaps a bit of challenge for those with mad
> parse skills: Has anyone ever considered named parameters for sprintf/
> printf? It would be quite useful (to me at least) to be able to do:
>
>  "I am %(name)s." % { :name => "Tom" ]
>
> Has anyone worked on something like this before? Is there anything
> equivalent in the Perl world or other language? I realize we can use
> numerals to identify the substitutions, but I feel the labels are much
> more readable. Moreover, ultimately it would be interesting to see:
>
>  "I am %(name)s." % binding
>
> Making use of the binding's local_variables.
>
> The challenge, of course, is to override printf/sprintf to do this
> (the binding part gets you extra ruby points ;-)  Even more
> challenging, augment the C code to handle it and submit it as a patch.
>
> T.
>


class String
   module M
     def % *args
       newstuff
       super
     end
   end
   include M
end

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