Function rsdb::c::rsdb_scan

#[no_mangle]
pub unsafe extern "C" fn rsdb_scan<'a>(
    db: *mut Tree, 
    key: *const c_char, 
    keylen: size_t
) -> *mut TreeIter<'a>

Iterate from a starting key. Caller is responsible for freeing the returned iterator with rsdb_free_iter.