void

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                      MONGOC_OPTIONAL_SET_VALUE(3)

       • opt: A mongoc_optional_t.

          void
          mongoc_optional_set_value (mongoc_optional_t *opt);

       Sets   a  value  on  a  mongoc_optional_t.  Once  a  value  has  been  set,  it  cannot  be  unset,  i.e.
       mongoc_optional_is_set will always return true after calling mongoc_optional_set_value.