From: Brian Candler <b.candler@...>
Date: 2010-06-03T00:29:43+09:00
Subject: Re: documentation mismatch ?

Stanislav Orlenko wrote:
> x = 10
> 5.times do |x|
>   puts "x inside the block: #{x}"
> end

In ruby 1.9, the |x| block parameter is different to the x variable 
declared outside. You'll also get a warning if you use the -w flag.

$ ruby19 -w try.rb
try.rb:2: warning: shadowing outer local variable - x
x inside the block: 0
x inside the block: 1
x inside the block: 2
x inside the block: 3
x inside the block: 4
x outside the block: 10
-- 
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