Programming in Dart: Classes

Jun 28 2022 · Dart 2.17, Flutter 3.0, DartPad

Part 1: Understand Classes

08. Create Static Members

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Previous episode: 07. Define Multiple Constructors Next episode: 09. Utilize Enumerations

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When you define a class, you define methods and properties for that class. Each instance of the class maintains its own state. This is useful, but there are times that you want to keep track of items on a class level.

class User {
  final int id;
  final String name;
  User.anonymous() : id = 0, name = 'anonymous';

static const anonymousUserId = 0;
static const anonymousUserName = 'anonymous';
User.anonymous() : id = anonymousUserId, name = anonymousUserName;
void main() {
private static const anonymousUserId = 0;
static const _anonymousUserId = 0;
static const _anonymousUserName = 'anonymous';
import 'dart:convert';
static String encode(User user) {

final encodedString = utf8.encode(;
final base64String = base64.encode(encodedString);
return base64String;