dart.tar.gz

dart2_7

Dart is a fully object-oriented, class-based, simple, and clean language. Google’s popular mobile framework, Flutter uses Dart language to implement high-quality native applications, so it’s recommended that you understand Flutter before beginning this course.

In this course, you will dive deep into Dart 2 language features while using interactive hands-on code playgrounds. This course will help you become confident with Dart extensions, enums, mixins, generics, libraries, asynchronous programming, class variables, callable classes, and generator functions.

By the end of this course, you will have a strong understanding of Dart principles, and you’ll be ready to start using this powerful language in your own projects.

Developing Web Applications with Dart

Which Dart libraries provide support for asynchronous programming?


Which Dart libraries provide support for asynchronous programming?

It represents the results of asynchronous operations.

It is a promise for a result to arrive in the future at some point.

Using the [`Future` API](https://api.dart.dev/stable/2.8.2/dart-async/Future/then.html)


How can you fetch results asynchronously using `Future` objects? Select all that apply.


How can you fetch results asynchronously using <code>Future</code> objects? Select all that apply.

```note
Beginning to listen...
Done.
Dart
Android
Flutter
iOS
Desktop
```

```note
Beginning to listen...
Dart
Android
Flutter
iOS
Desktop
Done.
```

Choose the correct output for the following code snippet:
```
Stream stream =
    Stream.fromIterable(["Dart", "Android", "Flutter", "iOS", "Desktop"]);

print("Beginning to listen...");

stream.listen(
  (s) => print(s),
);

print("Done.");

```


Choose the correct output for the following code snippet:
<pre><code>Stream stream =
 Stream.fromIterable([&quot;Dart&quot;, &quot;Android&quot;, &quot;Flutter&quot;, &quot;iOS&quot;, &quot;Desktop&quot;]);

print(&quot;Beginning to listen...&quot;);

stream.listen(
 (s) =&gt; print(s),
);

print(&quot;Done.&quot;);

</code></pre>

Choose the correct output for the following code snippet:
```
Future<void> main() async {
 Stream stream =
 Stream.fromIterable(["Dart", "Android", "Flutter", "iOS", "Desktop"]);
 print("Beginning to listen...");

 await for (var item in stream) {
 print(item);
 }

 print("Done.");
}
```

Choose the correct output for the following code snippet:
<pre><code>Future&lt;void&gt; main() async {
 Stream stream =
 Stream.fromIterable([&quot;Dart&quot;, &quot;Android&quot;, &quot;Flutter&quot;, &quot;iOS&quot;, &quot;Desktop&quot;]);
 print(&quot;Beginning to listen...&quot;);

 await for (var item in stream) {
 print(item);
 }

 print(&quot;Done.&quot;);
}
</code></pre>

Quiz yourself on Dart's asynchronous programming.

Introduction

Dart Extensions

Dart Enums

Dart Mixins

Dart Generics

Dart Libraries

Asynchronous Programming In Dart

Miscellaneous

Next Steps

Test Yourself on Asynchronous Programming