The difference is that Futures are about one-shot request/response (I ask, there is a delay, I get a notification that my Future is ready to collect, and I’m done!) whereas Streams are a continuous series of responses to a single request (I ask, there is a delay, then I keep getting responses until the stream dries up …
Read moreHow is Whencompleted () different from then () in Future?
whenComplete will fire a function either when the Future completes with an error or not, instead . then will fire a function after the Future completes without an error .
Read moreHow do you deal with Future in Flutter?
Sometimes you don’t want to turn the function into a Future or mark it async, so the other way to handle a Future is by using the . then function . It takes in a function that will be called with the value type of your Future. It’s similar to a Promise in JavaScript without the resolve, reject explicitness.
Read moreHow do you wait in Flutter?
seconds; timer. start(); // do something to wait for 2 seconds await Future. delayed(const Duration(seconds: 2), (){}); expect(timer. seconds, startTime – 2); });
Read moreWhat is Future wait Flutter?
According to the flutter docs, Future. wait() : Returns a future which will complete once all the provided futures have completed, either with their results , or with an error if any of the provided futures fail.28 Eki 2020
Read moreWhat is Future async?
When an async function is called, a Future is immediately returned and the body of the function is executed later . As the body of the async function is executed, the Future returned by the function call will be completed along with its result. In the above example, calling demo() results in the Future.
Read moreWhat is .then in Flutter?
await is to interrupt the process flow until the async method completes . then however does not interrupt the process flow. This means that the next instructions will be executed. But it allows you to execute the code when the asynchronous method completes.
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