mongoc_write_concern_append man page

mongoc_write_concern_append() — This function appends a write concern to command options. It is useful for appending a write concern to command options before passing them to mongoc_client_write_command_with_opts or a related function that takes an options document.

Synopsis

bool
mongoc_write_concern_append (mongoc_write_concern_t *write_concern,
                             bson_t                 *command);

Parameters

write_concern
A pointer to a mongoc_write_concern_t
command
A pointer to a bson_t

Description

This function appends a write concern to command options. It is useful for appending a write concern to command options before passing them to mongoc_client_write_command_with_opts or a related function that takes an options document.

Returns

Returns true on success, and false otherwise.

Example

See the example code for mongoc_client_read_command_with_opts

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2016‐11‐07 MongoDB C Driver