NAME

       Data::DPath::Filters - Magic functions available inside filter conditions

API METHODS

   affe
       Mysterious test function. Will vanish. Soon. Or will it really? No, probably not. I like
       it. :-)

       Returns true if the value eq "affe".

   idx
       Returns the current index inside array elements.

       Please note that the current matching elements might not be in a defined order if
       resulting from anything else than arrays.

   size
       Returns the size of the current element. If it is an array ref it returns the number of
       elements, if it is a hash ref it returns number of keys, if it is a scalar it returns 1,
       everything else returns -1.

   key
       If it is a hashref returns the key under which the current element is associated as value.
       Else it returns undef.

       This gives the key() function kind of a "look back" behaviour because the associated point
       is already after that key.

   value
       Returns the value of the current element.

   isa
       Frontend to UNIVERSAL::isa. True if the current element is_a given class.

   reftype
       Frontend to Scalar::Util::reftype.

       Returns Scalar::Util::reftype of current element $_. With this you can do comparison by
       yourself with "eq", "=~", "~~" or whatever in filter expressions.

   is_reftype($EXPECTED_TYPE)
       Frontend to Scalar::Util::reftype.

       Checks whether Scalar::Util::reftype of current element $_ equals the provided argument
       $EXPECTED_TYPE and returns true/false.

AUTHOR

       Steffen Schwigon <ss5@renormalist.net>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2019 by Steffen Schwigon.

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