However, you want your method to return a Future like this: Future<int> myFutureCubedInt = cubed(3); Or to be able to use it more practically like this: int myCubedInt = await cubed(3);
Read moreHow do you throw an exception in flutter?
You can use either return or throw to throw an error or an exception.
Read moreWhat is await Flutter?
When you await an asynchronous function, the execution of the code within the caller suspends while the async operation is executed . When the operation is completed, the value of what was awaited is contained within a Future object.
Read moreWhat is then () in Flutter?
And then is use one by one step of code, store data in variable and then move to next . Example: If I click in follow button until data store in variable it continuously retrieve some data to store and not allow next function to run, and if one task is complete than move to another.4 Şub 2019
Read moreWhen complete vs then Flutter?
. 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. This is the asynchronous equivalent of a “finally” block.
Read moreWhat is Future async in Flutter?
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 difference between async and async * In Flutter?
The difference between both is that async* will always return a Stream and offer some syntax sugar to emit a value through the yield keyword . 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.
Read more