From: Eric Hodel <drbrain@...7.net>
Date: 2006-05-23T05:49:58+09:00
Subject: Re: I call Ducktype Violation on #to_proc! :)

On May 20, 2006, at 12:10 PM, transfire@gmail.com wrote:

> Trying to be just ducky...
>
>   class X
>     def to_proc
>       self
>     end
>   end
>
> TypeError: X#to_proc should return Proc
>         from (irb):14
>
> Why isn't it enough that it x responds to #call?

There's a convention where to_XXX requires the receiver to return an  
X instance while to_X doesn't.

See [ruby-talk:96567].

-- 
Eric Hodel - drbrain@segment7.net - http://blog.segment7.net
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