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Flutter Cookbook

You're reading from   Flutter Cookbook Over 100 proven techniques and solutions for app development with Flutter 2.2 and Dart

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Product type Paperback
Published in Jun 2021
Publisher Packt
ISBN-13 9781838823382
Length 646 pages
Edition 1st Edition
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Authors (2):
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Simone Alessandria Simone Alessandria
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Simone Alessandria
Brian Kayfitz Brian Kayfitz
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Brian Kayfitz
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Table of Contents (17) Chapters Close

Preface 1. Getting Started with Flutter 2. Dart: A Language You Already Know FREE CHAPTER 3. Introduction to Widgets 4. Mastering Layout and Taming the Widget Tree 5. Adding Interactivity and Navigation to Your App 6. Basic State Management 7. The Future is Now: Introduction to Asynchronous Programming 8. Data Persistence and Communicating with the Internet 9. Advanced State Management with Streams 10. Using Flutter Packages 11. Adding Animations to Your App 12. Using Firebase 13. Machine Learning with Firebase ML Kit 14. Distributing Your Mobile App 15. Flutter Web and Desktop 16. About Packt
Dart: A Language You Already Know

At its heart, Dart is a conservative programming language. It was not designed to champion bold new ideas, but rather to create a predictable and stable programming environment. The language was created at Google in 2011, with the goal of unseating JavaScript as the language of the web.

JavaScript is a very flexible language, but its lack of a type system and misleadingly simple grammar can make projects very difficult to manage as they grow. Dart aimed to fix this by finding a halfway point between the dynamic nature of JavaScript and the class-based designs of Java and other object-oriented languages. The language uses a syntax that will be immediately familiar to any developer who already knows a C-style language.

This chapter also assumes that Dart is not your first programming language. Consequently, we will be skipping the parts of the Dart language where the syntax is the same as any other C-style language. You will not find anything in this chapter about loops, if statements, and switch statements; they aren't any different here from how they are treated in other languages you already know. Instead, we will focus on the aspects of the Dart language that make it unique.

In this chapter, we will cover the following recipes, all of which will function as a primer on Dart:

  • Declaring variables  var versus final versus const
  • Strings and string interpolation
  • How to write functions
  • How to use functions as variables with closures
  • Creating classes and using the class constructor shorthand
  • Defining abstract classes
  • Implementing generics
  • How to group and manipulate data with collections
  • Writing less code with higher-order functions
  • Using the cascade operator to implement the builder pattern
  • Understanding Dart Null Safety
If you are already aware of how to develop in Dart, feel free to skip this chapter. We will be focusing exclusively on the language here and will then cover Flutter in detail in the next chapter.
You have been reading a chapter from
Flutter Cookbook
Published in: Jun 2021
Publisher: Packt
ISBN-13: 9781838823382
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