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Postings from January 2018
On Sat, 05 Jan 2013 11:20:05 -0800, rjbs wrote:
> On Fri Dec 14 07:36:17 2012, nicholas wrote:
> > On Wed, Dec 12, 2012 at 01:15:39PM -0500, Peter Martini wrote:
> >
> > > Right. Can the ticket be closed for that reason then? There is an
> > > implementation of a module to do this on cpan, and a note on this
> > > warning
> > > in the docs wouldn't hurt.
> >
> > I think fix the documentation to be clear on the "what" and the
> > "why", then
> > close the ticket.
>
> When I wrote about this todo a while ago, I suggested that assigning
> to a lexical was enough
> to indicate that it was used. For example, "my $exit = Scope::Guard-
> >..." is useful, even if
> you don't mention $exit again. Similarly, "my ($self, @x) = @_" is
> not madness.
>
> This does mean that we're detecting fewer actually bogus cases. We'd
> only get variables
> declared and use never, rather than used once. (my $x;)
>
> Is that sufficiently useful to pursue? I'm not sure.
But declaring variables, and never using them can still be very useful.
This is how I write new() in my objects:
sub new ($class) {
bless \do {my $var} => $class; # Or bless do {\my $var} => $class
}
Here $var is declared, but never used. Unless you count "taking the
reference of it" as "being used".
Abigail
---
via perlbug: queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=5087
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