From: "Wolfgang Nádasi-Donner" <wonado@...>
Date: 2007-05-22T22:35:04+09:00
Subject: Re: bug in ruby

Robert Klemme schrieb:
> On 22.05.2007 14:53, Brian Candler wrote:
>> On Tue, May 22, 2007 at 09:41:03PM +0900, sairam MP wrote:
>>> class Foo
>>>   ...
>>>     if false
>>>       bar = 2        # never executed
>>>     end
>>>   ...
>>>     p bar            # prints nil
>>>   end
>>> end
>> But briefly: an assignment like "bar = 2" is seen at the time the 
>> program is *parsed* and means that an unqualified "bar" is treated 
>> as a local variable from that point onwards until the end of that scope. Whether or not it is
>> scope. Whether or not it is actually *executed* makes no difference.
> Additional reference material:
> 
> http://www.ruby-doc.org/docs/ProgrammingRuby/html/language.html#UO

It should be added in the documentation, that such an uninitialized local 
variable is set to the initial value "nil".

Wolfgang N�dasi-Donner