bson_iter_binary_subtype - Man Page

bson_subtype_t
bson_iter_binary_subtype (const bson_iter_t *iter);

• iter: A bson_iter_t <>.

This function shall return the subtype of a BSON_TYPE_BINARY element. It is a programming error to call this function on a field that is not of type BSON_TYPE_BINARY. You can check this with the BSON_ITER_HOLDS_BINARY() macro or bson_iter_type() <>.

Equivalent to the subtype output parameter of bson_iter_binary() <>.

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