Converting this line of perl to javascript...

whattheperl

@{$hashQ->{apIDs}}=grep !/$id/,@{$hashQ->{apIDs}};

That's a lot of concept in one line:

a) grep /stuff/ @{ ... } greps for stuff in the array which is referenced in the hash by the key apIDs

b) this is filtered by stuff NOT in said array and re-assigned as the same key referencing an array again.

So it filters aus non-existing IDs from apIDs and creates a new list for apIDs - but in a somewhat nested data structure.

In general, the grep construct is extremely common to filter things.

In more lines:

my @ids = @{ $hashQ->{apIDs} };

my @filtered_ids = grep { !$id } @ids;

$hashQ->{apIDs} = @filtered_ids;

\o/ Thank you.