Advertisements When we use some controllers in our widgets, I see it that we just make instances, fine But when we call as an example: controller.dispose() what actually the flutter engine exactly do for that constructor >Solution : According to the official source here, the dispose method is a general API that is used commonly… Read More What does the dispose() function actually do under the hood in flutter
Advertisements In my Angular app I would like to get SSE events from a server, and then do something with the results. For this, I found a solution where I wrap the SSE EventSource into an Observable. The code is the following: import { Injectable, NgZone } from ‘@angular/core’; import { Observable } from ‘rxjs’;… Read More Is there a way to make a destructor for RXJS Observables?
Advertisements How can I dispose subscription if my class is not in StatefulWidge? Is there any method? class EventNotifier extends ValueNotifier<List<String>> { EventNotifier(List<String> value) : super(value); final List<String> events = [‘add’, ‘delete’, ‘edit’]; final stream = Stream.periodic(const Duration(seconds: 5)); late final streamSub = stream.listen( (event) { value.add( events[Random().nextInt(3)], ); notifyListeners(); }, ); } >Solution :… Read More How to dispose subscription?
Advertisements I’m not talking about references to assemblies, rather the using statement within the code. For example what is the difference between this: using (DataReader dr = …. ) { …stuff involving data reader… } and this: { DataReader dr = … …stuff involving data reader… } Surely the DataReader is cleaned up by the… Read More C# What is the point of the using statement?
Advertisements I’m calling the following method in a loop while it is true, which leads to automatic reconnection. Since I’m using the using keyword, does it dispose the ClientWebSocket on each try/catch return false or it only disposes it if it reaches the end of ConnectAsync? private async Task<bool> ConnectAsync(CancellationToken cancellationToken) { using var clientWebSocket… Read More Is 'using' disposing the instance in this case