[REBOL] Re: R: Re: Variable not avilable out of a foreach
From: tim-johnsons:web at: 10-Dec-2007 17:12
On Monday 10 December 2007, Giuseppe Chillemi wrote:
> > > The script returns LINE has no Value, I must assign it to a
> >
> > temporary
> >
> > > variable... why ?
> >
> > try changing get_data to a func and pass 'line as an
> > argument to it tim
>
> Yes, it is another solution but my question is WHY is this happening ?
Hi Giuseppe:
Because the source of get_data is first evaluated outside of the *scope* of
the foreach loop. When it is called within the loop it treats 'line as a
global which does not exist. If there were a global 'line, then you could
have some very unpredictable results...
See my second post on this question, I've got some little examples there.
HTH
Tim
