WebSocket() constructor for creating new WebSocket connections; onopen event handler triggered when the connection is successfully established; onmessage event handler Invoked when a message is received from the server; onclose event handler fired when the connection is closed; ...
// decision widget to return [HomePage] or [SignInPage] // depending on the authentication state class AuthWidget extends StatelessWidget { // injecting auth and database as constructor arguments // (these could otherwise be retrieved with Provider, Riverpod, get_it etc.) const AuthWidget({req...
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In Dart, the => expression is shorthand for { return expression; }. Code Copy Text class MyApp extends StatelessWidget { In Flutter, almost everything is a widget. Some Flutter widgets are the rough equivalent of Android’s Views. For example the Text widget is equivalent to a TextView. H...
In addition, the following facts are often overlooked: Finalizers are called if constructors throw an exception (another convention I disagree with); therefore, the disposal code must gracefully handle partially-constructed objects. Implementing IDisposable on a CriticalFinalizerObject-derived type is tr...
aDemand, from the constructor, submission of detailed monthly schedule, analyzing and evaluating possible distortions in relation to the contractual schedule; 需求,从建设者,详细的月度日程表,分析的和评估的可能的畸变提议关于契约日程表; [translate] a做不好事情 Cannot complete the matter [translate] avm...