From: Sebastian Hungerecker <sepp2k@...>
Date: 2008-09-27T17:08:47+09:00
Subject: Re: How does Array's each method change its elements ?

w wg wrote:
> I have noticed that Number elements and String elements of an array
> generate diffrent results in its EACH method if you change the
> elements.

That's not true. You simply can not change a Numeric object.

> But it is difficult to understand how ruby implements
> arrays each method block.

Array's each method is implemented like this, basically:
class Array
  def each()
    0.upto(length-1) do |i|
      yield self[i]
    end
    return self
  end
end
Except that in reality it's a) not implemented in ruby and b) not using upto.
But if you'd redefine each using the above code there should be no difference 
in behaviour except if you also redefine upto.

HTH,
Sebastian
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