From: Rich Kilmer <rich@...>
Date: 2002-02-20T04:16:02+09:00
Subject: RE: advice on dispatch tables



> -----Original Message-----
> From: Mark Probert [mailto:probertm@nortelnetworks.com]
> Sent: Tuesday, February 19, 2002 1:54 PM
> To: ruby-talk ML
> Subject: advice on dispatch tables
> 
> 
> 
> <SNIP CODE>
>
> (In the "real" version, the hash is more complicated
> and there is processing to be done on the 'ref', but
> the basic idea is here.)
> 
> Is there a "better" way of doing this? A more
> ruby-ish way?
> 
> 
 class Bob

   def initialize
    @dispatch = {'a' => :do_a, 
                 'b' => :do_b}
   end

   def do_a
    puts "--> this is an a"
   end

   def do_b
    puts "--> this is an b"
   end

   def dispatch(ref=nil)
    raise "Unknown ref #{ref}" unless @dispatch.key? ref
    send @dispatch[ref]
   end
 end