Dart:html example

Here, the function variable type just needs to specify that it returns a Future: class Example { Future<void> Function() asyncFuncVar ; Future<void> asyncFunc() async => print(‘Do async stuff…’); Example() { asyncFuncVar = asyncFunc; asyncFuncVar(). then((_) => print(‘Hello’)); } } void main() => Example();

async gives you a Future and async* gives you a Stream . When users marks a function as async or async* allows it to use async/await keyword to use a Future.

Async means that this function is asynchronous and you might need to wait a bit to get its result. Await literally means – wait here until this function is finished and you will get its return value. Future is a type that ‘comes from the future’ and returns value from your asynchronous function.

An async function runs synchronously until the first await keyword . This means that within an async function body, all synchronous code before the first await keyword executes immediately.

Exploring Asynchronous Programming In Dart & Flutter. Asynchronous programming is a type of equal programming that permits a unit of work to run independently from the essential application thread . At the point when the work is finished, it tells the main thread.20 May 2021

Dart ProgrammingServer Side ProgrammingProgramming. Async and Await keywords are used to provide a declarative way to define the asynchronous function and use their results . The async keyword is used when we want to declare a function as asynchronous and the await keyword is used only on asynchronous functions.