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


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


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.


This Policy is not configurable except for the standard options.


Mike O'Regan


Copyright (c) 2011 Mike O'Regan. All rights reserved.

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.