Data::DPath::Filters
Section: User Contributed Perl Documentation (3pm)
Updated: 2022-11-29
Index
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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 $EXPECTED_TYPE and returns true/false.
AUTHOR
Steffen Schwigon <ss5@renormalist.net>
COPYRIGHT AND LICENSE
This software is copyright (c) 2019 by Steffen Schwigon.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
Index
- NAME
-
- API METHODS
-
- affe
-
- idx
-
- size
-
- key
-
- value
-
- isa
-
- reftype
-
- is_reftype($EXPECTED_TYPE)
-
- AUTHOR
-
- COPYRIGHT AND LICENSE
-
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