NAME

       "Object::Pad::MOP::Field" - meta-object representation of data field of a "Object::Pad"
       class

DESCRIPTION

       Instances of this class represent a data field of a class implemented by Object::Pad.
       Accessors provide information about the field. The special "value" method allows access to
       the value of the given field on instances of its class, letting the meta-object be used as
       a proxy to it.

       This API should be considered experimental, and will emit warnings to that effect. They
       can be silenced with

          use Object::Pad qw( :experimental(mop) );

METHODS

   name
          $name = $metafield->name

       Returns the name of the field, as a plain string including the leading sigil character.

   sigil
          $sigil = $metafield->sigil

       Since version 0.56.

       Returns the first character of the field name, giving just its leading sigil.

   class
          $metaclass = $metafield->class

       Returns the Object::Pad::MOP::Class instance representing the class of which this field is
       a member.

   value
          $current = $metafield->value( $instance )
          @current = $metafield->value( $instance )
          %current = $metafield->value( $instance )

       An accessor method which returns the current value of the field from an object instance.

          $metafield->value( $instance ) = $new

       On scalar fields, this method can also act as an lvalue mutator allowing a new value to be
       set.

   has_attribute
          $exists = $metafield->has_attribute( $name )

       Since version 0.57.

       Returns a boolean indicating whether the named attribute has been attached to the field.
       The attribute name should not include the leading colon (":") character.

   get_attribute_value
          $value = $metafield->get_attribute_value( $name )

       Since version 0.57.

       Returns the stored value of an attached attribute, if one exists. If the attribute has not
       been attached then an exception is thrown.

       Note that most core-defined attributes will either store no data at all, or a method name
       string. This accessor method is provided largely for the benefit of obtaining data defined
       by third-party attributes, which may more clearly define how that data is generated and
       used.

   get_attribute_values
          @values = $metafield->get_attribute_values( $name )

       Since version 0.66.

       Returns all the stored values of an attached attribute, if one exists. If the attribute
       has not been attached then an exception is thrown.

       This allows inspection of stored attribute values if it makes meaningful sense for the
       attribute to be applied multiple times to the same field. This is unlikely to be useful
       for core-defined attributes, but may be meaningful for third-party attributes.

AUTHOR

       Paul Evans <leonerd@leonerd.org.uk>