reactivemongo.api.commands.AggregationFramework
The fields to include.
The fields to include. The resulting objects will contain only these fields.
(project: StringAdd).self
(project: StringFormat).self
(project: ArrowAssoc[Project]).x
(Since version 2.10.0) Use leftOfArrow
instead
(project: Ensuring[Project]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
Reshapes a document stream by renaming, adding, or removing fields. Also uses Project to create computed values or sub-objects.
The fields to include. The resulting objects will contain only these fields.