Book Image

Flutter Cookbook

By : Simone Alessandria, Brian Kayfitz
4 (1)
Book Image

Flutter Cookbook

4 (1)
By: Simone Alessandria, Brian Kayfitz

Overview of this book

“Anyone interested in developing Flutter applications for Android or iOS should have a copy of this book on their desk.” – Amazon 5* Review Lauded as the ‘Flutter bible’ for new and experienced mobile app developers, this recipe-based guide will teach you the best practices for robust app development, as well as how to solve cross-platform development issues. From setting up and customizing your development environment to error handling and debugging, The Flutter Cookbook covers the how-tos as well as the principles behind them. As you progress, the recipes in this book will get you up to speed with the main tasks involved in app development, such as user interface and user experience (UI/UX) design, API design, and creating animations. Later chapters will focus on routing, retrieving data from web services, and persisting data locally. A dedicated section also covers Firebase and its machine learning capabilities. The last chapter is specifically designed to help you create apps for the web and desktop (Windows, Mac, and Linux). Throughout the book, you’ll also find recipes that cover the most important features needed to build a cross-platform application, along with insights into running a single codebase on different platforms. By the end of this Flutter book, you’ll be writing and delivering fully functional apps with confidence.
Table of Contents (17 chapters)
About Packt

How to group and manipulate data with collections

All programming languages possess some mechanism to organize data. We've already covered the most common way  objects. These class-based structures allow you, the programmer, to define how you want to model your data and manipulate it with methods.

If you want to model groups of similar data, collections are your solution. A collection contains a group of elements. There are many types of collections in Dart, but we are going to focus on the three most popular ones: List, Map, and Set.

  • Lists are linear collections where the order of the elements is maintained. 
  • Maps are a non-linear collection of values that can be accessed by a unique key.
  • Sets are a non-linear collection of unique values where the order is not maintained.

These three main types of collections can be found in almost every programming language, but sometimes by a different name. If Dart is not your first programming language, then this matrix should help you correlate collections to equivalent concepts in other languages:

Dart Java Swift JavaScript
List ArrayList Array Array
Map HashMap Dictionary Object
Set HashSet Set Set