Provided by: libbson-doc_1.9.2-1_all 

NAME
bson_has_field - bson_has_field()
SYNOPSIS
bool
bson_has_field (const bson_t *bson, const char *key);
PARAMETERS
• bson: A bson_t.
• key: A string containing the name of the field to check for.
DESCRIPTION
Checks to see if key contains an element named key. This also accepts "dotkey" notation such as
"a.b.c.d".
RETURNS
true if key was found within bson; otherwise false.
AUTHOR
MongoDB, Inc
COPYRIGHT
2018, MongoDB, Inc
1.9.2 Jan 12, 2018 BSON_HAS_FIELD(3)