NAME
    Mo::utils::Hash - Mo hash utilities.

SYNOPSIS
     use Mo::utils::Hash qw(check_hash);

     check_hash($self, $key);

DESCRIPTION
    Utilities for checking of hash values.

SUBROUTINES
  "check_hash"
     check_hash($self, $key);

    *Since version 0.01.*

    Check parameter defined by $key which is reference to hash.

    Put error if check isn't ok.

    Returns undef.

ERRORS
     check_hash():
             Parameter '%s' isn't hash reference.
                     Reference: %s

EXAMPLE1
     use strict;
     use warnings;

     use Mo::utils::Hash qw(check_hash);

     my $self = {
             'key' => {},
     };
     check_hash($self, 'key');

     # Print out.
     print "ok\n";

     # Output:
     # ok

EXAMPLE2
     use strict;
     use warnings;

     use Error::Pure;
     use Mo::utils::Hash qw(check_hash);

     $Error::Pure::TYPE = 'Error';

     my $self = {
             'key' => 'bad',
     };
     check_hash($self, 'key');

     # Print out.
     print "ok\n";

     # Output like:
     # #Error [..Utils.pm:?] Parameter 'key' isn't hash reference.

DEPENDENCIES
    Exporter, Error::Pure, Readonly.

SEE ALSO
    Mo::utils
        Mo utilities.

REPOSITORY
    <https://github.com/michal-josef-spacek/Mo-utils-Hash>

AUTHOR
    Michal Josef Špaček <mailto:skim@cpan.org>

    <http://skim.cz>

LICENSE AND COPYRIGHT
    © 2025 Michal Josef Špaček

    BSD 2-Clause License

VERSION
    0.01