bool

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                         MONGOC_OPTIONAL_IS_SET(3)

       • opt: A mongoc_optional_t.

       Returns true if a value was set, or false otherwise.

          bool
          mongoc_optional_is_set (const mongoc_optional_t *opt);

       Returns whether a value for a mongoc_optional_t was set.