From: Ryan Davis <ryand-ruby@...>
Date: 2007-12-23T09:39:53+09:00
Subject: Re: Block-local variables - obsolete?


On Dec 22, 2007, at 15:32 , murphy wrote:

> Charles Oliver Nutter wrote:
>> Only block parameters are now always local to the block; variables  
>> from
>> enclosing scopes are still visible. The ; syntax, then, is to specify
>> certain names should be forced local, rather than defering to the  
>> outer
>> scope.
> is this really the difference? both produce the "shadowing outer local
> variable" warning:

I _think_ what Charles was getting at is by forcing local you can't  
use the variable AFTER the block:

> irb(main):004:0> (1..2).each do |n; m| m ||= 0; m += n; end
> => 1..2
> irb(main):005:0> m
> NameError: undefined local variable or method `m' for main:Object

(but, that appears to be the case regardless of the semicolon)