[ruby-talk:4944] Re: Perl 6 rumblings -- RFC 225 (v1) Data: Superpositions

Ok. But "none?" should alias "!any?" instead of "!all?", I think ... :-)

  -- M

Dave Thomas wrote:

> ...
>
> I like any? and all? We might want to make 'exists?' an alias for
> 'any?', and 'none?' == '!all?'.
>
> Could I also vote for 'count'
>
>     thing.count { |i| i > 3 }
>
> Then... do we add it to Enumerable, so do we put it in a separate
> library
>
>    module Enumerable
>       include Existential
>
>   end
>
> Why do this? Two reasons. First, it avoids cluttering Enumerable
> (that's a poor reason). The second is that we get to play with it
> before committing changes to the interpreter. I'm thinking that we
> implement it in Ruby, and put the source in lib/. We then see if it is
> useful and if it is actually used. If so, and if the performance hit
> of implementing it in Ruby proves to be too great, we can then move it
> in the the C source.
>
> In general, I'm thinking that this is a good way to do all kinds of
> new features: implement them first in Ruby before adding bulk to the
> interpreter.
>
> Regards
>
> Dave