Chapter 16 — Organizing a Dart Project

Level: beginner / intermediate Estimated time: 6 h Prerequisites: Chapter 15 — Asynchronous Programming (Future, async, await) What you will be able to do by the end: install Dart on your machine, create a real project with dart create, split it into multiple files, add packages from pub.dev, analyze it, format it, test it, and compile it into an executable.

16.0 — Chapter Objectives

By the end of this chapter, you will be able to:

• explain why DartPad is no longer enough past a certain point;
• say what the Dart SDK contains;
• install Dart on Windows, macOS, or Linux and verify the installation;
• install VS Code and the Dart extension;
• create a project with dart create mon_jeu;
• choose between the console and package templates;
• name each folder in a Dart project and say what it is for;
• run a program with dart run;
• analyze your code with dart analyze;
• format your code with dart format;
• produce an executable with dart compile exe;
• read and write a pubspec.yaml file, field by field;
• understand the role of pubspec.lock;
• explain what a package is and browse pub.dev;
• add a dependency with dart pub add;
• distinguish between dependencies and dev_dependencies;
• read a version constraint and understand the caret ^;
• write the three forms of import (dart:, package:, relative path);
• filter an import with show and hide;
• prefix an import with as;
• split code into one class per file;
• explain part / part of and why it is avoided;
• create a "barrel" file with export;
• understand the scope of a private _ member at the file level;
• configure analysis_options.yaml and enable lints;
• write a first test with package:test and run it with dart test;
• write a correct .gitignore for a Dart project;
• organize a clean project from start to finish.