Dart · Introductory

Lesson 1 · On the house

Hello Dart

print, // comments, dart run, main, null-safe framing.

Lesson 2

Variables

var, final, const, inference, naming.

Lesson 3

Types and operators

int, double, bool, String; arithmetic and logic.

Lesson 4

Functions

Return types, =>, named/optional params, main().

Lesson 5

Strings

Interpolation $name / ${expr}, +, multiline.

Lesson 6

Lists and maps

List, Map, 0-based index, add, length, literals.

Lesson 7

Control flow

if/else, for, while, for-in, switch basics.

Lesson 8

Null safety

?, !, ??, ?., late — intro accuracy.

Lesson 9

Classes

class, fields, constructors, methods, this.

Lesson 10

Packages and async sketch

pubspec.yaml, dart pub get, import, Future/async/await.