On 2/28/06, Ross Bamford <rossrt@[...].uk>  wrote:
>  This local variable isn't yet initialized (the n + 1 would be it's
>  initializer), so n + 1 ends up being nil + 1, or (effectively) nil.+(1),
>  hence the "undefined method '+' for nil:NilClass".
> 
>  Using self.n = 1 forces Ruby to treat the assignment as involving the
>  method 'n' on 'self'.
> 
>  I don't think it's a bug, but I know it's tripped people (including me)
>  up before. From the implementation point of view it's probably the
>  lesser of two evils, though.

It's really unrubesque and tricky.  What would be the consequences of
handling it as you would normally expect?  What would the side effects
be?


--

-- Chiaroscuro --
Liquid Development Blog: http://feeds.feedburner.com/blogspot/liquiddevelopment