MouseX::NativeTraits::HashRef - Helper trait for HashRef attributes

       This module provides a Hash attribute which provides a number of hash-like operations.

metamethod_provider_classhelper_type

       MouseX::NativeTraits::HashRef - Helper trait for HashRef attributes

       These methods are implemented in MouseX::NativeTraits::MethodProvider::HashRef.

       get($key,$key2,$key3...)
           Returns values from the hash.

           In  list  context  return a list of values in the hash for the given keys.  In scalar context returns
           the value for the last key specified.

       set($key=>$value,$key2=>$value2...)
           Sets the elements in the hash to the given values.

       delete($key,$key2,$key3...)
           Removes the elements with the given keys.

       exists($key)
           Returns true if the given key is present in the hash.

       defined($key)
           Returns true if the value of a given key is defined.

       keys
           Returns the list of keys in the hash.

       sorted_keys
           Returns the list of sorted keys in the hash.

       values
           Returns the list of values in the hash.

       kv  Returns the key/value pairs in the hash as an array of array references.

             for my $pair ( $object->options->pairs ) {
                 print "$pair->[0] = $pair->[1]\n";
             }

       elements
           Returns the key/value pairs in the hash as a flattened list.

       clear
           Resets the hash to an empty value, like "%hash = ()".

       count
           Returns the number of elements in the hash. Also useful for not empty: "has_options => 'count'".

       is_empty
           If the hash is populated, returns false. Otherwise, returns true.

       accessor
           If passed one argument, returns the value of the specified key. If passed  two  arguments,  sets  the
           value of the specified key.

       MouseX::NativeTraits

perl v5.34.0                                       2022-06-16                 MouseX::NativeTraits::HashRef(3pm)

         package Stuff;
         use Mouse;

         has 'options' => (
             traits    => ['Hash'],
             is        => 'ro',
             isa       => 'HashRef[Str]',
             default   => sub { {} },
             handles   => {
                 set_option     => 'set',
                 get_option     => 'get',
                 has_no_options => 'is_empty',
                 num_options    => 'count',
                 delete_option  => 'delete',
                 pairs          => 'kv',
             },
         );