Provided by: libbson-doc_1.30.4-1ubuntu1_all 

SYNOPSIS
uint32_t bson_iter_key_len (const bson_iter_t *iter);
PARAMETERS
• iter: A bson_iter_t.
DESCRIPTION
Fetches the length of the key for the current element observed by iter. This is a constant time computation, and therefore faster than calling strlen() on a key returned by bson_iter_key().
RETURNS
An integer representing the key length. SEE ALSO: bson_iter_key() to retrieve current key.
AUTHOR
MongoDB, Inc
COPYRIGHT
2009-present, MongoDB, Inc. 1.30.4 Jun 08, 2025 BSON_ITER_KEY_LEN(3)