From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2010-04-12T05:10:12+09:00
Subject: Re: Hash name increment on iteration?

On Sun, Apr 11, 2010 at 5:32 PM, Li Chen <chen_li3@yahoo.com> wrote:
> Brian Candler wrote:
>
>> Inside it will be implemented something like this:
>>
>> module Enumerable
>>   def each_with_index
>>     i = 0
>>     each do |elem|
>>       yield elem, i
>>       i += 1
>>     end
>>   end
>> end
>>
>> But you could consider it like this:
>>
>> class Array
>>   def each_with_index
>>     size.times do |i|
>>       yield self[i], i
>>     end
>>   end
>> end
>
>
>
> Hi Brian,
>
> Just some follow-up questions for these codes:
> I recall the the method call in Ruby follow this format:
> "receiver.method"
> So
> 1) which one is the reciever for "each"?
> 2) which one is the reciever for "size"?

When there's no explicit receiver, the method call happens on the
object that is "self" at that point.

Jesus.