I haven't done any work with MongoDB, but I assume from the following:

# delete a document
$coll->delete_one( { name => "John Doe" } );

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... that you can delete a single document given its ID by using:

$coll->delete_one( $doc );
# or maybe
$coll->delete_one( { _id => $doc->{_id} } );

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In reply to Re^3: MongoDB removing document by Corion
in thread MongoDB removing document by GertMT

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