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Moose::Util(3)	      User Contributed Perl Documentation	Moose::Util(3)

       Moose::Util - Utilities for working with	Moose classes

       version 2.2013

	 use Moose::Util qw/find_meta does_role	search_class_by_role/;

	 my $meta = find_meta($object) || die "No metaclass found";

	 if (does_role($object,	$role))	{
	   print "The object can do $role!\n";

	 my $class = search_class_by_role($object, 'FooRole');
	 print "Nearest	class with 'FooRole' is	$class\n";

       This module provides a set of utility functions.	Many of	these
       functions are intended for use in Moose itself or MooseX	modules, but
       some of them may	be useful for use in your own code.

       This method takes a class name or object	and attempts to	find a
       metaclass for the class,	if one exists. It will not create one if it
       does not	yet exist.

       Returns true if the provided package name or object is a	Moose::Role.

   does_role($class_or_obj, $role_or_obj)
       Returns true if $class_or_obj does the given $role_or_obj. The role can
       be provided as a	name or	a Moose::Meta::Role object.

       The class must already have a metaclass for this	to work. If it
       doesn't,	this function simply returns false.

   search_class_by_role($class_or_obj, $role_or_obj)
       Returns the first class in the class's precedence list that does
       $role_or_obj, if	any. The role can be either a name or a
       Moose::Meta::Role object.

       The class must already have a metaclass for this	to work.

   apply_all_roles($applicant, @roles)
       This function applies one or more roles to the given $applicant.	The
       applicant can be	a role name, class name, or object.

       The $applicant must already have	a metaclass object.

       The list	of @roles should a list	of names or Moose::Meta::Role objects,
       each of which can be followed by	an optional hash reference of options
       ("-excludes" and	"-alias").

   ensure_all_roles($applicant,	@roles)
       This function is	similar	to "apply_all_roles", but only applies roles
       that $applicant does not	already	consume.

   with_traits($class_name, @role_names)
       This function creates a new class from $class_name with each of
       @role_names applied. It returns the name	of the new class.

   get_all_attribute_values($meta, $instance)
       Returns a hash reference	containing all of the $instance's attributes.
       The keys	are attribute names.

   get_all_init_args($meta, $instance)
       Returns a hash reference	containing all of the "init_arg" values	for
       the instance's attributes. The values are the associated	attribute
       values. If an attribute does not	have a defined "init_arg", it is

       This could be useful in cloning an object.

   resolve_metaclass_alias($category, $name, %options)
   resolve_metatrait_alias($category, $name, %options)
       Resolves	a short	name to	a full class name. Short names are often used
       when specifying the "metaclass" or "traits" option for an attribute:

	   has foo => (
	       metaclass => "Bar",

       The name	resolution mechanism is	covered	in "Metaclass and Trait	Name
       Resolution" in Moose.

   meta_class_alias($to[, $from])
   meta_attribute_alias($to[, $from])
       Create an alias from the	class $from (or	the current package, if	$from
       is unspecified),	so that	"Metaclass and Trait Name Resolution" in Moose
       works properly.

       Given a list of scalars,	turns them into	a proper list in English ("one
       and two", "one, two, three, and four"). This is used to help us make
       nicer error messages.

   throw_exception( $class_name, %arguments_to_exception)
       Calls die with an object	of Moose::Exception::$class_name, with
       %arguments_to_exception passed as arguments.

       Here is a list of possible functions to write

       discovering original method from	modified method
       search for origin class of a method or attribute

       See "BUGS" in Moose for details on reporting bugs.

       o   Stevan Little <>

       o   Dave	Rolsky <>

       o   Jesse Luehrs	<>

       o   Shawn M Moore <>

       o   xxxx	x<section>xx'xx	(Yuval Kogman) <>

       o   Karen Etheridge <>

       o   Florian Ragwitz <>

       o   Hans	Dieter Pearcey <>

       o   Chris Prather <>

       o   Matt	S Trout	<>

       This software is	copyright (c) 2006 by Infinity Interactive, Inc.

       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 v5.32.1			  2020-07-21			Moose::Util(3)


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