From: Ian Whitlock <iw1junk@...>
Date: 2007-06-20T05:02:41+09:00
Subject: Re: local vars clobbered by un-run code

Trans wrote:

> 
> Don't tell me, it's some quirk of the way Ruby works. Sure looks like
> a bug though. Just in case:
> 
>   ruby 1.8.4 (2005-12-24) [i486-linux]
> 
> Hmm... I just got a dejavu. Maybe I came across this before.
> 
> T.

T all you showed is that sometimes the programmer must be responsible
for knowing whether he wants to reference a function or a variable.

Consider:

def x
  1
end

p x              #recognize function call without parens

if false
  x = x() + 1    #variable x is created when code parsed
end

p x    #reference the variable x which is nil because no assignment was 
made
p x()  #if the above were the function, how would you reference the 
variable?

Result:

1
nil
1

Ian

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