From: Ken Bloom <kbloom@...>
Date: 2009-01-14T10:39:12+09:00
Subject: Re: Implementing each and <=>

On Tue, 13 Jan 2009 14:15:58 -0500, Ruby Rabbit wrote:

> badboy wrote:
>> Ruby Rabbit schrieb:
>>> 
>>> (let's just assume that @list is an array)
>>> 
>>> Thanks.
>> i would define each like this:
>>    def each(&blk)
>>      @list.each(&blk)
>>    end
> 
> okay, i forgot to mention that I was wondering whether the
> easiest/cleanest way was to use a send somehow?
> 
>     def each
>       @list.send
>     end

No. This won't work. Send is just a method for calling methods, and 
unless you pass it a method name and all relevant arguments, it won't 
know what message to send.

Thus, you'll be at

def each &blk
  @list.send :each, &blk
end

and it's easier to do

def each &blk
  @list.each &blk
end

--Ken


-- 
Chanoch (Ken) Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/