Perl::Critic::Policy::Variables::ProhibitLoopOnHash - Don't write loops on hashes, only on keys and

       Sawyer X

       This policy is not configurable except for the standard options.

       This software is copyright (c) 2018 by Sawyer X.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5
       programming language system itself.

perl v5.36.0                                       2022-12-12              Perl::Critic::...hibitLoopOnHash(3pm)

       When "looping over hashes," we mean looping over hash keys or hash values. If you forgot to call "keys"
       or "values" you will accidentally loop over both.

           foreach my $foo (%hash) {...}        # not ok
           action() for %hash;                  # not ok
           foreach my $foo ( keys %hash ) {...} # ok
           action() for values %hash;           # ok

       An effort is made to detect expressions:

           action() for %hash ? keys %hash : ();                             # ok
           action() for %{ $hash{'stuff'} } ? keys %{ $hash{'stuff'} } : (); # ok

       (Granted, the second example there doesn't make much sense, but I have found a variation of it in real
       code.)

       Perl::Critic::Policy::Variables::ProhibitLoopOnHash - Don't write loops on hashes, only on keys and
       values of hashes

       Perl::Critic

       Thank you to Ruud H.G. Van Tol.

       version 0.008