package Catmandu::Fix::sum;
use Catmandu::Sane;
our $VERSION = '1.0603';
use List::Util ();
use Moo;
use namespace::clean;
use Catmandu::Fix::Has;
has path => (fix_arg => 1);
with 'Catmandu::Fix::SimpleGetValue';
sub emit_value {
my ($self, $var) = @_;
"if (is_array_ref(${var})) {"
. "${var} = List::Util::sum(\@{${var}}) // 0;" . "}";
}
1;
__END__
=pod
=head1 NAME
Catmandu::Fix::sum - replace the value of an array field with the sum of its elements
=head1 SYNOPSIS
# e.g. numbers => [2, 3]
sum(numbers)
# numbers => 5
=head1 SEE ALSO
L<Catmandu::Fix>
=cut