From: "David A. Black" <dblack@...>
Date: 2007-10-28T05:30:07+09:00
Subject: Re: .each do |foo, bar| what does bar do?

Hi --

On Sun, 28 Oct 2007, Brian Adkins wrote:

> On Oct 27, 7:05 am, "David A. Black" <dbl...@rubypal.com> wrote:
>> If you were going to write Hash#each in Ruby, without recourse to
>> #each, you could write it like this:
>>
>> class Hash
>>    def each
>>      keys = self.keys   # make a 'keys' local variable
>>      i = 0
>>      until i == keys.size
>>        key = keys[i]
>>        yield(key, self[key])
>>        i += 1
>>      end
>>      self
>>    end
>> end
>
> Or this:
>
> class Hash
>  def each
>    each_key {|key| yield key, self[key] }
>  end
> end
>
> I know, you meant w/o recourse to each* :)

Yes -- I don't think each_key uses each but it's definitely out of
bounds for my example :-) Mainly, of course, I wanted to "explode" the
whole thing so that the underlying logic was brought to the surface.


David

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