tada! now I work at the item level instead of it's parent:
use strict;
use warnings;
use Data::Rmap qw(:all);
use Data::Dumper;
my $initial_lol = [ note => [ shopping => [ item => 'sample' ] ] ];
# In $initial_lol, the new child of shopping is shopping_items
my $new_lol = newnode($initial_lol, item => shopping_items());
warn Dumper($new_lol);
sub newnode {
my ($lol, $node_label, $new_node)=@_;
my ($mapresult) = rmap_array {
if ($_->[0] eq $node_label) {
$_ = shopping_items();
cut($_);
} else {
$_;
}
} $lol;
$mapresult;
}
sub shopping_items {
my @shopping_items;
for my $item qw(bread butter beans) {
push @shopping_items, [ item => $item ];
}
\@shopping_items;
}
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