let method
Assigns a value as a parameter for this connection.
Implementation
Future let(String key, Map<String, dynamic> val) {
final id = _generateId();
final completer = Completer();
wait().then((_) {
once(id, (res) => _result(res, completer));
_send(id, 'let', [key, val]);
});
return completer.future;
}