snapshots abstract method
Future<void>
snapshots(
- AsyncSnapshotListenerCallback<
RESULT_TYPE, AsyncSnapshot< listener, [RESULT_TYPE> > - VoidCallback? onFinally
Asynchronously executes a computation once with snapshots callbacks in parameters for the asynchronous computation that may fail into something that is safe to read.
This is useful to avoid having to do a tedious try/catch/then
.
This is same as execute except that it will return a snapshot of the asynchronous computation's state.
Implementation
Future<void> snapshots(
AsyncSnapshotListenerCallback<RESULT_TYPE, AsyncSnapshot<RESULT_TYPE>>
listener, [
VoidCallback? onFinally,
]);