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Postings from August 2003
On Thursday 28 August 2003 18:11, John Peacock wrote:
> >>perl -we '$c,@c'
> >
> > Useless use of a variable in void context at -e line 1.
> > Useless use of a variable in void context at -e line 1.
> >
> > Although $c and @c are each used only once there is no warning for either
of
> > them.
> >
>
> I don't think this is a bug, but rather a side effect of the implementation.
> 'main::c' is referring to the glob *c, which both $c and @c are a part of.
That's what I assumed. What's the difference between a bug and a bad
side-effect of the implementation which disgarees with the documentation?
I suppose I should say "disagrees with the obvious interpretation of the
documentation" because
Name "%s::%s" used only once: possible typo
(W once) Typographical errors often show up as unique variable
names. If you had a good reason for having a unique name, then
just mention it again somehow to suppress the message. The "our"
declaration is provided for this purpose.
speaks about variable names rather than variables but I wonder how many people
get that the subtle distinction without finding out the hard way,
F