From: Justin Collins <justincollins@...>
Date: 2008-01-19T04:11:50+09:00
Subject: Re: passing method references in python & ruby

Rados�aw Bu�at wrote:
> In python when you use method name without parenthesises you get
> method reference. In Ruby it won't work beacuse method can be called
> without parenthesises (and Ruby programmers love it :)). If you want
> to get method reference you can use method(:you_method_name) and you
> get reference to Method instance. Later you can just call 'call'
> method and pass some parameters. Direct traslation of your program to
> Ruby looks like:
>
> def firstWay(arg1, arg2)
>   return 'Tastes great.'
> end
>
> def secondWay(arg1, arg2)
>   return 'Less filling.'
> end
>
> def doStuff(whichway, first_arg, second_arg)
>   return whichway.call(first_arg, second_arg)
> end
>
> puts doStuff(method(:firstWay), nil, nil

Ah, that's the one I was looking for.  Then you can do:

def doStuff(whichway, first_arg, second_arg)
  whichway[first_arg, second_arg]
end


-Justin