# phpman > perldoc > Devel::OverloadInfo

## NAME
    [Devel::OverloadInfo](https://www.chedong.com/phpMan.php/perldoc/Devel%3A%3AOverloadInfo/markdown) - introspect overloaded operators

## VERSION
    version 0.007

## DESCRIPTION
    [Devel::OverloadInfo](https://www.chedong.com/phpMan.php/perldoc/Devel%3A%3AOverloadInfo/markdown) returns information about overloaded operators for a given class (or
    object), including where in the inheritance hierarchy the overloads are declared and where the
    code implementing them is.

## FUNCTIONS
  is_overloaded
       if (is_overloaded($class_or_object)) { ... }

    Returns a boolean indicating whether the given class or object has any overloading declared.
    Note that a bare "use overload;" with no actual operators counts as being overloaded.

    Equivalent to [overload::Overloaded](https://www.chedong.com/phpMan.php/perldoc/overload%3A%3AOverloaded/markdown)(), but doesn't trigger various bugs associated with it in
    versions of perl before 5.16.

  overload_op_info
        my $info = overload_op_info($class_or_object, $op);

    Returns a hash reference with information about the specified overloaded operator of the named
    class or blessed object.

    Returns "undef" if the operator is not overloaded.

    See "Overloadable Operations" in overload for the available operators.

    The keys in the returned hash are as follows:

    class
        The name of the class in which the operator overloading was declared.

    code
        A reference to the function implementing the overloaded operator.

    code_name
        The fully qualified name of the function implementing the overloaded operator.

    method_name (optional)
        The name of the method implementing the overloaded operator, if the overloading was
        specified as a named method, e.g. "use overload $op => 'method';".

    code_class (optional)
        The name of the class in which the method specified by "method_name" was found.

    value (optional)
        For the special "fallback" key, the value it was given in "class".

  overload_info
        my $info = overload_info($class_or_object);

    Returns a hash reference with information about all the overloaded operators of specified class
    name or blessed object. The keys are the overloaded operators, as specified in %[overload::ops](https://www.chedong.com/phpMan.php/perldoc/overload%3A%3Aops/markdown)
    (see "Overloadable Operations" in overload), and the values are the hashes returned by
    "overload_op_info".

## CAVEATS
    Whether the "fallback" key exists when it has its default value of "undef" varies between perl
    versions: Before 5.18 it's there, in later versions it's not.

## AUTHOR
    Dagfinn Ilmari Mannsåker <<ilmari@ilmari.org>>

## COPYRIGHT AND LICENSE
    This software is copyright (c) 2014 by Dagfinn Ilmari Mannsåker.

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