From: Glenn Jackman <glennj@...>
Date: 2009-12-04T02:05:19+09:00
Subject: Re: easy dsl style method generation?

At 2009-12-03 10:38AM, "Roger Pack" wrote:
>  Here's what I wish I could easily do.
>  
>  Move.from(x).to(y)
>  
>  and set it up easily, like
>  
>  class Move
>   def from(x).to(y)
>  
>   end
>  end
>  
>  Any helpers out there to make this somewhat possible that anyone knows
>  of?


My spidey-sense tells me you're trying to do something like this:

    class Move
      def move(from, to)
        if @location == from
          @location = to
        else
          raise "I'm not located at #{from}!"
        end
      end
    end

    m.move(x, y)

Multi-word methods can be found in Smalltalk, but not in Ruby.

Another possibility that makes calling your method more readable:

    class Move
      def move(coords)
        if @location == coords[:from]
          @location = coords[:to]
        else
          raise "I'm not located at #{coords[:from]}!"
        end
      end
    end

    m.move(:from => x, :to => y)

-- 
Glenn Jackman
    Write a wise saying and your name will live forever. -- Anonymous