From: daz <dooby@...10.karoo.co.uk>
Date: 2003-10-13T00:53:06+09:00
Subject: Re: set_trace_func/Array#fetch error


From: "ts" <decoux@moulon.inra.fr>
> >>>>> "d" == daz  <dooby@d10.karoo.co.uk> writes:
>
> d>         val = list.fetch(key) {:return_nil}  # <---
> d>         return nil if val == :return_nil     # <---
>
>  Well, if you don't like the original construct (return in {}), you must
>  know that you find it frequently with #callcc. Something like
>
>    def tt
>       callcc {|cc| return cc}
>       # etc
>    end
>
>  This is really valid.
>
>
> Guy Decoux
>
>


There's a clumsy way of doing it, too.

   def tt
      ret = nil  #  until the new block var rules arrive.
      callcc {|cc| ret = cc}
      # etc
      ret
   end

But your point is made.
It once worked, now it's broken.


daz