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6 Types of Constructors in Dart

Most of us know what a constructor is and how it works. Let’s take a closer look at the six types of constructors we use all the time

Erdi Izgi
Better Programming
7 min readNov 25, 2022

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Photo by Oliver Buchmann on Unsplash

Writing clean code is important in every language and framework, whether you are the sole developer or part of a team. Here, I will do my best to introduce you to clean code principles as cleanly as possible. All right! Let’s get started.

Constructors in Dart Language

Constructors allow us to create different instances of our classes. Since Flutter is all about widgets, building widgets requires constructors. No matter what level of developer you are, your code will probably have a lot of constructors because you may have a lot of widgets. It’s important to know when and why to use each type of constructor.

There are many ways to construct an object in modern languages, and the Dart language offers the following constructors:

Table of Contents

Default Constructors

Parameterized Constructors

Named Constructors

Factory Constructors

Redirecting Constructors

Constant Constructors

Default, parameterized, and named constructors are known as “generative constructors” since they purely generate an instance.

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Erdi Izgi
Erdi Izgi

Written by Erdi Izgi

Technical Project Lead at mgm Technology Partners. Software Design enthusiast. MSc degree on Computer Graphics and Game Development.

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