What is a Flutter package?

A Flutter package is a self-contained and reusable unit of code that encapsulates a specific set of functionalities, making it easy to share, distribute, and reuse code across different Flutter projects. These packages can include everything from UI components and themes to utility functions and API integrations. The use of packages is a fundamental aspect of Flutter development, promoting modular and maintainable code.

To use a Flutter package in your project, you typically declare the dependency in the `pubspec.yaml` file, which is a configuration file used by the Dart package manager, Pub. For example, if you wanted to include a popular package like `http` for making HTTP requests, you would add the following to your `pubspec.yaml`: