From: Alex Young <alex@...>
Date: 2006-07-02T01:58:15+09:00
Subject: Re: Arrray#to_proc

Matthew Harris wrote:
> I don't know if this was posted previously, but I had the idea of a
> Array#to_proc, an example would be:
> 
> [9, 19, 29].map(&[:succ, :to_s, :reverse])
> => ["01", "02", "03"]
> 
> I've seen people ask questions such as arr.map(&'meth1.meth2.meth3')
> but I think using the Array#to_proc solution is cleaner.
> 
> Would this actually prove useful? It would seem that using the normal
> block form would be just as much typing, though.
> 
I'd rather do this:

class Proc
   def +(other)
     proc {|*args|
       args = [self.call(*args)]
       other.call(*args)
     }
   end
end

[9, 19, 29].map( &:succ + &:to_s + &:reverse )
#=> ["01", "02", "03"]

but I'm just weird like that :-)

Is this useful for anything?  It looks like it should be, but I can't 
think of what...

-- 
Alex