Function simpledb::rocksdb::merge_operator::partial_merge_callback

pub unsafe extern "C" fn partial_merge_callback(
    raw_cb: *mut c_void, 
    raw_key: *const i8, 
    key_len: usize, 
    operands_list: *const *const i8, 
    operands_list_len: *const usize, 
    num_operands: i32, 
    success: *mut u8, 
    new_value_length: *mut usize
) -> *mut i8