the command result must be the new object instead of the old one.
the modifier document.
if true, creates a new document if no document matches the query, or if documents match the query, findAndModify performs an update
(update: StringAdd).self
(update: StringFormat).self
(Since version 0.20.3) No longer a case class
(Since version 0.20.3) No longer a case class
(Since version 0.20.3) No longer a case class
(Since version 0.20.3) No longer a case class
(update: ArrowAssoc[Update]).x
(Since version 2.10.0) Use leftOfArrow
instead
(update: Ensuring[Update]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
Update (part of a FindAndModify command).