FutureBuilder solves a square value and returns the result after 5 seconds, till then we show a progress indicator to the user. StreamBuilder shows a stopwatch, incrementing _count value by 1 every second.
Read moreWhat is snapshot Flutter?
Snapshot is the result of the Future or Stream you are listening to in your FutureBuilder . Before interacting with the data being returned and using it in your builder, you have to access it first.
Read moreWhat is a builder in Flutter?
A builder is a Flutter design pattern in which the construction code of a widget is defined outside of its class . Builder functions are callback interfaces that pass data (often layout-specific) to the parent widget which returns a child based on that data.
Read moreHow do I create async function in Dart?
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();
Read moreWhat is async and async * In Flutter?
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 moreWhat does async * mean in Flutter?
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.
Read moreHow does async work in darts?
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.
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