From: Dave Thomas <dave@...>
Date: 2004-06-07T01:48:41+09:00
Subject: Re: How to ducktype a Hash?


On Jun 6, 2004, at 11:42, Sean O'Dell wrote:
> If Hash tagged itself as complying with the "hash type" you could 
> depend on
> certain methods doing certain things and taking a certain number of
> parameters.

Perhaps you'd like Objective-C, which has the concept of protocols, and 
where variable types can be unconstrained, partially constrained, or 
specified by type.

Cheers

Dave