From: gabriele renzi <surrender_it@...>
Date: 2005-06-08T04:05:26+09:00
Subject: Re: making a duck

Eric Mahurin ha scritto:
> --- Christian Neukirchen <chneukirchen@gmail.com> wrote:
> 
>>gabriele renzi <surrender_it@remove-yahoo.it> writes:
>>
>>>Eric Mahurin ha scritto:
>>>
>>>
>>>>Is there another way to do this?  With all of the talk
>>
>>about
>>
>>>>duck-typing, there would already be something out there to
>>
>>do
>>
>>>>this.
>>>
>>>There was some talk in the past about Object.new taking a
>>
>>block, which
>>
>>>imho would be useful for this. Meanwhile what about using
>>
>>Struct.new
>>
>>>with a block to define methods?
>>
>>Wow, this is nice... but where is it documented?

nowhere, it seem. But I remebered it was discussed on ruby-core and 
tried it :)

<snip>

> So is Struct.new(&block) equivalent to:
> 
> StructClass = Struct.new
> StructClass.instance_eval(&block)
> StructClass

no, class_eval, and you have to submit at least one arg to Struct.new :/