Perl::Critic::Policy::Community::AmpersandSubCalls - Don't use & to call subroutines
Ampersands (&) were once needed to call subroutines, but in modern Perl they are not only unnecessary but actually change the behavior from what you may expect. Calling a subroutine with an ampersand ignores the subroutine's prototype if any, which may change what arguments the subroutine receives. Additionally, calling a subroutine as &foo; with no arguments will pass on the contents of @_ from the current subroutine, which may be quite surprising. Unless used intentionally for this behavior, the ampersand should simply be omitted.
my $value = &foo(); # not ok
my $sum = &foo(1,2); # not ok
my $value = foo(); # ok
my $sum = foo 1,2; # ok
This policy is a subclass of the core policy Perl::Critic::Policy::Subroutines::ProhibitAmpersandSigils, and performs the same function but in the community theme.
This policy is part of Perl::Critic::Community.
This policy is not configurable except for the standard options.
Dan Book, firstname.lastname@example.org
Copyright 2015, Dan Book.
This library is free software; you may redistribute it and/or modify it under the terms of the Artistic License version 2.0.
To install Perl::Critic::Community, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell
For more information on module installation, please visit the detailed CPAN module installation guide.