Expand description
This module provides Query and QueryMut traits, which are used for querying
and executing functions on several different providers. This includes
Subscriber::ConnectionContext
on a Subscriber and the Sender and
Receiver types on a datagram Endpoint.
Structs§
- Once
- A type that implements Query and QueryMut traits and only executes once.
Enums§
- Control
Flow - Used to tell a query whether it should exit early or go on as usual.
- Error
- Reason for the failed query.