Data::DPath::Filters - Magic functions available inside filter conditions
Mysterious test function. Will vanish. Soon. Or will it really? No, probably not. I like it. :-)
Returns true if the value eq "affe".
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.
Returns the size of the current element. If it is a hash ref it returns number of elements, if hashref it returns number of keys, if scalar it returns 1, everything else returns -1.
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.
Returns the value of the current element. If it is a hashref return the value. If a scalar return the scalar. Else return undef.
Frontend to UNIVERSAL::isa. True if the current elemt is_a given class.
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.
eq
=~
~~
Checks whether Scalar::Util::reftype of current element $_ equals the provided argument $EXPECTED_TYPE and returns true/false.
Steffen Schwigon, <schwigon at cpan.org>
<schwigon at cpan.org>
Copyright 2008-2010 Steffen Schwigon.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install Data::DPath, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Data::DPath
CPAN shell
perl -MCPAN -e shell install Data::DPath
For more information on module installation, please visit the detailed CPAN module installation guide.