Gain insights into Dart's object-oriented features, explore extensions, enums, mixins, and asynchronous programming. Discover hands-on code practice to confidently apply Dart in your projects.

dart.tar.gz

dart2_7

Dart is a fully object-oriented, class-based, simple, and clean language. Google’s popular mobile framework, Flutter uses Dart language to implement high-quality native applications, so it’s recommended that you understand Flutter before beginning this course.

In this course, you will dive deep into Dart 2 language features while using interactive hands-on code playgrounds. This course will help you become confident with Dart extensions, enums, mixins, generics, libraries, asynchronous programming, class variables, callable classes, and generator functions.

By the end of this course, you will have a strong understanding of Dart principles, and you’ll be ready to start using this powerful language in your own projects.

Developing Web Applications with Dart

# Introduction to Generics

Generics are used to apply stronger type checks at compile time. They enforce type-safety in code. For example, the type safety in collections is enforced by holding the same type of data. Generics help write reusable classes and methods/functions for different data types.

**Type Safety:** A programming concept that allows a memory block to contain only one type of data.

The concept of generics in Dart is similar to [Java's generics](https://en.wikipedia.org/wiki/Generics_in_Java) and [C++'s templates](https://en.wikipedia.org/wiki/Template_C%2B%2B).

Dart's collection is able to hold different data types in one collection. It is optional in Dart to mention data type for a value. Usually, the variable's data type is inferred automatically. For example, `var myVar = 5;` will infer `myVar`'s data type as `int`. The code snippet below is valid in Dart. To verify Dart’s support for different data types, try to add/remove different data types. Add a list `['hello']` as an entry in the `items` list.

In this lesson, you will learn about generics.

Introduction

Dart Extensions

Dart Enums

Dart Mixins

Dart Generics

Dart Libraries

Asynchronous Programming In Dart

Miscellaneous

Next Steps

What are Generics?

Introduction to Generics