From: Derek Michael <derekwrobel@...>
Date: 2009-12-15T16:29:44+09:00
Subject: Re: Newbie Question: Blocks and Parameters

Walton Hoops wrote:
> 
> Going back to your first example.  A possible implementation of .each
> 
> class Array
>   def each
>     x=0
>     while x<self.size
>       yield(self[x])
>       x+=1
>     end
>   end
> end
> 
> Thus, in this example calling each calls yield passing in one at a time
> each member of the array.  Thus your block gets excuted once for each
> member of the array.  Does that help? I'm not sure how to explain it
> better.

Thanks to the both of you for the explanations.  I think I understand 
now.  I assume you mentioned the 'possible' implementation of .each 
method to imply to me that the each method must have a yield in it since 
it does something when you pass a block/closure, yes?
-- 
Posted via http://www.ruby-forum.com/.