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Вивчайте Creating and Listening to Streams | Streams Basics
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Dart Asynchronous Flow

bookCreating and Listening to Streams

Dart Streams allow you to handle sequences of asynchronous events, such as user interactions, data from a network, or periodic updates. Unlike a Future, which represents a single asynchronous result, a Stream can deliver multiple values over time. This makes Streams especially useful when you need to process a flow of data that arrives at different moments, rather than all at once. You can listen to a Stream's events as they are emitted, letting your program react to each new value as soon as it becomes available.

main.dart

main.dart

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import 'dart:async'; void main() { // Create a Stream that emits integers from 1 to 5, one every second Stream<int> numberStream = Stream.periodic( Duration(seconds: 1), (count) => count + 1, ).take(5); // Listen to the Stream and print each value as it arrives numberStream.listen((value) { print('Received: $value'); }); }
question mark

Which statement best describes the purpose of a Stream in Dart and how you use the listen method?

Select the correct answer

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Секція 3. Розділ 1

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bookCreating and Listening to Streams

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Dart Streams allow you to handle sequences of asynchronous events, such as user interactions, data from a network, or periodic updates. Unlike a Future, which represents a single asynchronous result, a Stream can deliver multiple values over time. This makes Streams especially useful when you need to process a flow of data that arrives at different moments, rather than all at once. You can listen to a Stream's events as they are emitted, letting your program react to each new value as soon as it becomes available.

main.dart

main.dart

copy
1234567891011121314
import 'dart:async'; void main() { // Create a Stream that emits integers from 1 to 5, one every second Stream<int> numberStream = Stream.periodic( Duration(seconds: 1), (count) => count + 1, ).take(5); // Listen to the Stream and print each value as it arrives numberStream.listen((value) { print('Received: $value'); }); }
question mark

Which statement best describes the purpose of a Stream in Dart and how you use the listen method?

Select the correct answer

Все було зрозуміло?

Як ми можемо покращити це?

Дякуємо за ваш відгук!

Секція 3. Розділ 1
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