DOKK / manpages / debian 10 / libmongoc-doc / mongoc_collection_keys_to_index_string.3.en
MONGOC_COLLECTION_KEYS_TO_INDEX_STRING(3) MongoDB C Driver MONGOC_COLLECTION_KEYS_TO_INDEX_STRING(3)

mongoc_collection_keys_to_index_string - mongoc_collection_keys_to_index_string()

char *
mongoc_collection_keys_to_index_string (const bson_t *keys);


keys: A bson_t.

This function returns the canonical stringification of a given key specification. See create-indexes.

It is a programming error to call this function on a non-standard index, such one other than a straight index with ascending and descending.

A string that should be freed with bson_free().

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February 23, 2019 1.14.0