### Importing Flutter Supporting Libraries (Dart)

Source: https://main-api.flutter.dev

This code snippet shows how to import supporting libraries that ship with Flutter but are organized by specific packages. These libraries are imported using the 'package:<package>/<library>.dart' syntax, providing specialized functionalities such as testing utilities ('flutter_test') or file system access.

```Dart
import 'package:flutter_test/flutter_test.dart';
import 'package:file/local.dart';
```

--------------------------------

### Importing Flutter Framework Libraries (Dart)

Source: https://main-api.flutter.dev

This code snippet demonstrates how to import core Flutter framework libraries. These libraries are part of the main Flutter SDK and are typically imported using the 'package:flutter/<library>.dart' syntax. This allows access to fundamental UI components and platform services.

```Dart
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
```

--------------------------------

### Importing Dart Core Libraries (Dart)

Source: https://main-api.flutter.dev

This code snippet illustrates how to import standard Dart libraries that are part of the 'dart:' namespace. These libraries provide core functionalities like asynchronous programming ('dart:async') and UI primitives ('dart:ui'), essential for any Dart application, including Flutter.

```Dart
import 'dart:async';
import 'dart:ui';
```

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