NAME

       Perl::Critic::Policy::Variables::ProhibitAugmentedAssignmentInDeclaration - Do not write "
       my $foo .= 'bar'; ".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Variable declarations that also do initialization with '=' are common.  Perl also allows
       you to use operators like '.=', '+=', etc., but it it is more clear to not do so.

           my $foo .= 'bar';              # same as my $foo = 'bar';
           our $foo *= 2;                 # same as our $foo = 0;
           my ( $foo, $bar ) += ( 1, 2 ); # same as my ( $foo, $bar ) = ( undef, 2 );
           local $Carp::CarpLevel += 1;   # same as local $Carp::CarpLevel = 1;
           state $foo += 2;               # adds 2 every time it's encountered

       Such constructs are usually the result of botched cut-and-paste, and often are bugs. Some
       produce warnings.

CONFIGURATION

       There is an "allow_our" boolean option for this Policy. If set, augmented assignments are
       allowed when declaring "our" variables. Since "our" variables are globally accessible,
       some modules will want to allow users to initialize the variable prior to the module using
       the variable. Modules may also wish to use the same our variable in different scopes
       without declaring it at the outer scope.

       With this option set, the following are flagged as indicated:

           our $DEBUG //= 1;           # ok

       This can be enabled in your .perlcriticrc:

           [Perl::Critic::Policy::Variables::ProhibitAugmentedAssignmentInDeclaration]
           allow_our = 1

AUTHOR

       Mike O'Regan

COPYRIGHT

       Copyright (c) 2011-2023 Mike O'Regan

       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 v5.36.0       Perl::Critic::Policy::Variables::ProhibitAugmentedAssignmentInDeclaration(3pm)