Perl::Critic::Policy::Variables::ProhibitUnusedVariables(3)
NAME
Perl::Critic::Policy::Variables::ProhibitUnusedVariables - Don't ask
for storage you don't need.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Unused variables clutter code and require the reader to do mental
bookkeeping to figure out if the variable is actually used or not.
At present, this Policy is very limited in order to ensure that there
aren't any false positives. Hopefully, this will become more
sophisticated soon.
Right now, this only looks for simply declared, uninitialized lexical
variables.
my $x; # not ok, assuming no other appearances.
my @y = (); # ok, not handled yet.
our $z; # ok, global.
local $w; # ok, global.
This module is very dumb: it does no scoping detection, i.e. if the
same variable name is used in two different locations, even if they
aren't the same variable, this Policy won't complain.
Have to start somewhere.
CONFIGURATION
This Policy is not configurable except for the standard options.
AUTHOR
Elliot Shank "<perl@galumph.com>"
COPYRIGHT
Copyright (c) 2008-2011 Elliot Shank.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself. The full text of this license can
be found in the LICENSE file included with this module.
perl v5.28.2 Perl::Critic::Policy::Variables::ProhibitUnusedVariables(3)
perl-critic 1.134.0 - Generated Thu Jun 6 14:14:18 CDT 2019