NAME
Hash::Util::Merge - utility functions for merging hashes
VERSION
version v0.2.0
SYNOPSIS
use Hash::Util::Merge qw/ mergemap /;
my %a = ( x => 1, y => 2 );
my %b = ( x => 3, y => 7 );
my $c = mergemap { $a + $b } \%a, \%b;
# %c = ( x => 4, y => 9 );DESCRIPTION
This module provides some syntactic sugar for merging simple hashes with a function.
EXPORTS
None by default.
mergemap
$hashref = mergemap { fn($a,$b) } \%a, \%b;For each key in the hashes %a and %b, this function applies the user-supplied function fn to the corresponding values of that key, in the resulting hash reference.
If a key does not exist in either of the hashes, then it will return undef.
SUPPORT FOR OLDER PERL VERSIONS
Since v0.2.0, the this module requires Perl v5.14 or later.
Future releases may only support Perl versions released in the last ten years.
If you need this module on Perl v5.10, please use one of the v0.1.x versions of this module. Significant bug or security fixes may be backported to those versions.
KNOWN ISSUES
Readonly hashes, or those with locked keys, may return an error when merged with a hash that has other keys.
SEE ALSO
SOURCE
The development version is on github at https://github.com/robrwo/Hash-Util-Merge and may be cloned from git://github.com/robrwo/Hash-Util-Merge.git
BUGS
Please report any bugs or feature requests on the bugtracker website https://github.com/robrwo/Hash-Util-Merge/issues
When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature.
AUTHOR
Robert Rothenberg <rrwo@cpan.org>
This module uses code from List::Util::PP.
This module was developed from work for Science Photo Library https://www.sciencephoto.com.
CONTRIBUTOR
Mohammad S Anwar <mohammad.anwar@yahoo.com>
COPYRIGHT AND LICENSE
This software is Copyright (c) 2020-2023 by Robert Rothenberg.
This is free software, licensed under:
The Artistic License 2.0 (GPL Compatible)