From: James Britt <james_b@...>
Date: 2005-08-21T01:50:07+09:00
Subject: Re: object pattern matching

Ara.T.Howard wrote:
> 
> i've been toying with an idea lately and thinking about how one would 
> crawl an
> object graph to determine if it matched a specifc object.  for instance
> 
> 
>   array_of_hashes = [ {}, {} ]
> 
>   specific_array_of_hashes = [ {'key' => 'value}, {:k => :v} ]
>   specific_array_of_hashes_2 = [ {:k => :v} ]
> 
>   specific_array_of_hashes.is_shaped_like? array_of_hashes #=> true
> 
> so, something like pattern matching in ml languages.  any concepts on 
> how to
> do that in ruby for arbitrary objects?
> 

Isn't there a Ruby project that allows one to run regexen over object 
hierarchies?

James


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