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Dart

Learn Dart 3 from null safety, records, pattern matching and async to expert level with hands-on projects.

The Dart course covers all levels with null safety, OOP, generics, async/await, Streams, isolates, FFI and language design.

  • 362 lessons
  • 30 h 26 min
  • 10 projects
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Levels

The Dart course goes from zero to expert in four levels. Start at any level you like.
Not sure of your level? Take the placement test
Beginner

Learn Dart 3 fundamentals: variables, data types, loops, collections, functions and null safety.

  • Dart basics
  • Variables
  • Data types
  • Operators
116 lessons · 9 h 27 min See lessons →
Intermediate

Learn OOP, inheritance, mixins, generics, async/await and Streams in Dart.

  • Classes in depth
  • Inheritance
  • Encapsulation
  • Mixins
116 lessons · 9 h 59 min See lessons →
Advanced

Learn isolates, concurrency, metaprogramming, testing and Dart Server (shelf) in Dart.

  • Isolates
  • Concurrency
  • Advanced streams
  • Metaprogramming
83 lessons · 7 h 0 min See lessons →
Expert

Learn language design, compiler internals, FFI, native extensions and large-scale architecture in Dart.

  • Language design
  • Compiler internals
  • FFI
  • Native extension
47 lessons · 4 h 0 min See lessons →

Projects you will build

At every level you combine what you learned into a real page.
Calculator Beginner · 5 lessons Shopping cart Beginner · 5 lessons To-do CLI Beginner · 5 lessons Beginner final Beginner · 5 lessons Helper library Intermediate · 5 lessons Quiz app Intermediate · 5 lessons Library app Intermediate · 5 lessons Intermediate final Intermediate · 5 lessons Advanced final Advanced · 5 lessons Expert final Expert · 5 lessons

How does it work?

Short explanation

Each lesson explains one concept in a few short cards; no long videos or walls of text.

Try it right away

Multiple choice, fill-in-the-blank and matching exercises lock in what you just learned.

Write it yourself

You write real code in the in-browser editor; it is checked instantly and you see the result live.

Curriculum

62 groups · 362 lessons · 30 h 26 min

Learn Dart 3 fundamentals: variables, data types, loops, collections, functions and null safety.

1
Dart basics
6 lessons · 24 min
  1. 1 What is Dart? Learn that Dart is a language developed by Google. 4 min
  2. 2 Your first program Learn to write your first Dart program with main and print. 4 min
  3. 3 dart run Learn to run programs with dart run. 4 min
  4. 4 Comments Learn to write // and /* */ comments in Dart. 3 min
  5. 5 String interpolation Learn to embed variables in strings with \$. 4 min
  6. 6 Summary - Dart basics Combine main, print and comments to write your first Dart program. 5 min
2
Variables
6 lessons · 27 min
  1. 1 var and type Learn to declare variables with var and explicit types. 4 min
  2. 2 final Learn to declare immutable variables with final. 4 min
  3. 3 const Learn to define compile-time constants with const. 4 min
  4. 4 late Learn deferred initialization with late. 5 min
  5. 5 Null safety Learn null and nullable types (?) in Dart. 5 min
  6. 6 Summary - Variables Combine var, final, const and null safety to write a profile program. 5 min
3
Data types
6 lessons · 26 min
  1. 1 Integer types Learn int and num types. 4 min
  2. 2 Floating-point types Learn double and floating-point numbers. 4 min
  3. 3 bool and String Learn bool and String types. 3 min
  4. 4 Type inference Learn var and type inference. 5 min
  5. 5 dynamic Learn the dynamic type and runtime type checking. 5 min
  6. 6 Summary - Data types Combine int, double, String and bool to write a calculation card. 5 min
4
Project: CalculatorProject
5 lessons · 30 min
  1. 1 Project design Design the structure of the calculator project and write the skeleton code. 6 min
  2. 2 Add and subtract Add and test the addition and subtraction functions. 6 min
  3. 3 Multiply and divide Add multiplication, division and the divide-by-zero check. 6 min
  4. 4 Error handling Safely catch invalid inputs with try/catch. 6 min
  5. 5 Putting it together Combine all parts into a working calculator. 6 min
5
Operators
6 lessons · 26 min
  1. 1 Arithmetic operators Learn arithmetic with +, -, *, /, % and ~/. 4 min
  2. 2 Assignment operators Learn shortcut assignments with =, +=, -= and ++/--. 4 min
  3. 3 Comparison operators Learn to compare values with ==, !=, <, >, <= and >=. 4 min
  4. 4 Logical operators Learn boolean logic with &&, || and !. 4 min
  5. 5 Null-aware operators Learn ??, ?. and ??= operators. 5 min
  6. 6 Summary - Operators Combine arithmetic, null-aware and logical operators to build a grade calculator. 5 min
6
Strings
6 lessons · 28 min
  1. 1 Creating strings Learn to create Strings with single and double quotes. 4 min
  2. 2 String interpolation Learn to embed values in strings with \$ and \${}. 5 min
  3. 3 length and methods Learn .length and String methods. 4 min
  4. 4 substring Learn to take parts of a string with substring. 5 min
  5. 5 contains and indexOf Learn search with contains and indexOf. 5 min
  6. 6 Summary - Strings Combine interpolation, length and contains to write a business card. 5 min
7
Conditionals
6 lessons · 27 min
  1. 1 The if statement Learn how to check a condition with if. 4 min
  2. 2 else and else if Learn else and else if chains for alternative cases. 4 min
  3. 3 switch Learn multi-way selection with switch, case, break and default. 5 min
  4. 4 Pattern matching Learn Dart 3 switch expressions and pattern matching. 5 min
  5. 5 Ternary Learn to write a conditional expression in one line with ? :. 4 min
  6. 6 Summary - Conditionals Combine if, switch and pattern matching to write a day-of-week app. 5 min
8
Loops
6 lessons · 26 min
  1. 1 The for loop Learn to write counted loops with for. 4 min
  2. 2 The while loop Learn loops that run while a condition holds with while. 4 min
  3. 3 The do-while loop Learn loops that run at least once with do-while. 4 min
  4. 4 for-in Learn to iterate over iterables with for-in. 5 min
  5. 5 break and continue Learn to exit a loop with break and skip with continue. 4 min
  6. 6 Summary - Loops Combine for, while and for-in to write a multiplication table. 5 min
9
Project: Shopping cartProject
5 lessons · 30 min
  1. 1 Cart design Design the class structure for the shopping cart. 6 min
  2. 2 Adding items Learn to add items with the addItem method. 6 min
  3. 3 Calculating totals Learn to compute the subtotal and the tax-inclusive total. 6 min
  4. 4 Listing the cart Write the method that prints the cart formatted. 6 min
  5. 5 Putting it together Combine the cart class with a menu loop. 6 min
10
Lists
6 lessons · 28 min
  1. 1 Creating lists Learn to create Lists with []. 4 min
  2. 2 List access Learn to access list elements by index. 4 min
  3. 3 add and remove Learn list management with .add and .remove. 5 min
  4. 4 length and contains Learn list info with .length and .contains. 5 min
  5. 5 List methods Learn list processing with map, where and fold. 5 min
  6. 6 Summary - Lists Combine add, map and where to write a class list. 5 min
11
Sets and Maps
6 lessons · 30 min
  1. 1 Set Learn unique collections with Set. 5 min
  2. 2 Set operations Learn Set management with add, contains and remove. 5 min
  3. 3 Map Learn key-value collections with Map. 5 min
  4. 4 Map operations Learn Map management with [] and .putIfAbsent. 5 min
  5. 5 Map iteration Learn to iterate over Maps with for-in and forEach. 5 min
  6. 6 Summary - Sets and Maps Combine Set and Map to write a phone book. 5 min
12
Functions
6 lessons · 28 min
  1. 1 Defining functions Learn how to define and call a function. 4 min
  2. 2 Return values Learn to return a value from a function with return. 4 min
  3. 3 Arrow functions Learn to write short functions with =>. 5 min
  4. 4 Optional parameters Learn optional and named parameters. 5 min
  5. 5 First-class functions Learn to pass functions as values. 5 min
  6. 6 Summary - Functions Combine arrow, named and first-class to write a math helper. 5 min
13
Null safety in depth
6 lessons · 30 min
  1. 1 Nullable types Learn String? and nullable types. 5 min
  2. 2 Null-aware operators Learn ??, ?. and ??= operators. 5 min
  3. 3 The ! operator Learn null assertion with !. 5 min
  4. 4 late Learn deferred initialization with late. 5 min
  5. 5 Null check Learn null checking with if (x != null). 5 min
  6. 6 Summary - Null safety Combine ?, ??, ! and late to write a null-safe function. 5 min
14
Class basics
6 lessons · 30 min
  1. 1 class Learn to define classes with class. 5 min
  2. 2 Constructor Learn to define the class constructor. 5 min
  3. 3 Instance variables Learn to declare instance variables in a class. 5 min
  4. 4 Methods Learn to define methods in a class. 5 min
  5. 5 this Learn to access the class itself with this. 5 min
  6. 6 Summary - Class basics Combine class, constructor and methods to write a User class. 5 min
15
Project: To-do CLIProject
5 lessons · 30 min
  1. 1 Task model Design the Task class and list structure. 6 min
  2. 2 Adding tasks Learn to add tasks with the addTask method. 6 min
  3. 3 Listing tasks Learn to print tasks formatted with listTasks. 6 min
  4. 4 Completing tasks Learn to update task status with completeTask. 6 min
  5. 5 Putting it together Build a working CLI app with a menu loop. 6 min
16
Advanced string operations
6 lessons · 30 min
  1. 1 split and join Learn string splitting with split and join. 5 min
  2. 2 replace Learn string modification with replaceAll. 5 min
  3. 3 trim and pad Learn formatting with trim, padLeft and padRight. 5 min
  4. 4 RegExp Learn regular expressions with RegExp. 5 min
  5. 5 StringBuffer Learn efficient string concatenation with StringBuffer. 5 min
  6. 6 Summary - Advanced strings Combine split, RegExp and StringBuffer to write a CSV parser. 5 min
17
Enums
6 lessons · 28 min
  1. 1 Defining enums Learn to define named constants with enum. 4 min
  2. 2 Enum values Learn to access enum members. 4 min
  3. 3 Enhanced enums Learn Dart 3 enhanced enums. 5 min
  4. 4 switch with enum Learn branching on enums with switch. 5 min
  5. 5 Enum and patterns Learn enums with pattern matching. 5 min
  6. 6 Summary - Enums Combine enum and enhanced enum to write a state machine. 5 min
18
Exceptions
6 lessons · 29 min
  1. 1 try/catch Learn to catch errors with try/catch. 5 min
  2. 2 throw Learn to throw exceptions with throw. 4 min
  3. 3 finally Learn the cleanup block with finally. 5 min
  4. 4 The Exception class Learn the Exception class and custom exceptions. 5 min
  5. 5 on clause Learn to catch specific exception types with on. 5 min
  6. 6 Summary - Exceptions Combine try/catch, finally and a custom exception to write a bank account class. 5 min
19
Async basics
6 lessons · 30 min
  1. 1 Future Learn asynchronous operations with Future. 5 min
  2. 2 async/await Learn async code with async and await. 5 min
  3. 3 then Learn Future chaining with .then. 5 min
  4. 4 Future.error Learn Future.error and catchError. 5 min
  5. 5 Future.wait Learn parallel Futures with Future.wait. 5 min
  6. 6 Summary - Async basics Combine async/await and Future.wait to write a parallel downloader. 5 min
20
Beginner finalProject
5 lessons · 30 min
  1. 1 Project design Design the skeleton of the beginner final mini app. 6 min
  2. 2 Classes Set up the data model with class and constructor. 6 min
  3. 3 Collections Write data management with List and Map. 6 min
  4. 4 Error handling Add error handling with try/catch. 6 min
  5. 5 Putting it together Combine all parts into a working final app. 6 min

Learn OOP, inheritance, mixins, generics, async/await and Streams in Dart.

1
Classes in depth
6 lessons · 30 min
  1. 1 Constructor types Learn named and default constructors. 5 min
  2. 2 Named constructors Learn multiple constructors with named constructors. 5 min
  3. 3 Initializer list Learn field initialization with the initializer list. 5 min
  4. 4 const constructor Learn compile-time objects with const constructors. 5 min
  5. 5 factory Learn flexible creation with factory constructors. 5 min
  6. 6 Summary - Classes Combine named, const and factory constructors to write a Point class. 5 min
2
Inheritance
6 lessons · 30 min
  1. 1 extends Learn to inherit from a base class with extends. 5 min
  2. 2 super Learn to call the base class constructor with super. 5 min
  3. 3 Override Learn to redefine methods with @override. 5 min
  4. 4 abstract Learn abstract classes with abstract. 5 min
  5. 5 interface Learn to implement interfaces with implements. 5 min
  6. 6 Summary - Inheritance Combine extends, super and override to write a shape hierarchy. 5 min
3
Project: Helper libraryProject
5 lessons · 30 min
  1. 1 Module design Design the skeleton of the helper library class. 6 min
  2. 2 String helpers Add and test string processing methods. 6 min
  3. 3 Number helpers Add number conversion and calculation methods. 6 min
  4. 4 Date helpers Add DateTime processing methods. 6 min
  5. 5 Putting it together Combine helper methods into a library. 6 min
4
Encapsulation
6 lessons · 30 min
  1. 1 private Learn private members with _. 5 min
  2. 2 Getters and setters Learn controlled access with get and set. 5 min
  3. 3 final and const fields Learn immutability with final and const fields. 5 min
  4. 4 late Learn deferred initialization with late. 5 min
  5. 5 static Learn class-level members with static. 5 min
  6. 6 Summary - Encapsulation Combine private, getter/setter and static to write an Account class. 5 min
5
Mixins
6 lessons · 30 min
  1. 1 mixin Learn reusable code with mixin. 5 min
  2. 2 Using mixins Learn to apply mixins with with. 5 min
  3. 3 mixin constraints Learn mixin constraints with on. 5 min
  4. 4 Multiple mixins Learn to apply multiple mixins. 5 min
  5. 5 mixin vs inheritance Learn the difference between mixin and inheritance. 5 min
  6. 6 Summary - Mixins Combine mixin, with and on to write a capability system. 5 min
6
Generics
6 lessons · 30 min
  1. 1 Generic class Learn generic classes with <T>. 5 min
  2. 2 Generic methods Learn to define generic methods. 5 min
  3. 3 Type constraints Learn type constraints with extends. 5 min
  4. 4 Generic collections Learn List<T> and Map<K,V> generic collections. 5 min
  5. 5 Generics vs dynamic Learn the difference between generics and dynamic. 5 min
  6. 6 Summary - Generics Combine generic class, methods and collections to write a Stack<T>. 5 min
7
Project: Quiz appProject
5 lessons · 30 min
  1. 1 Quiz model Design the skeleton of Question and Quiz classes. 6 min
  2. 2 Adding questions Learn to add questions with the addQuestion method. 6 min
  3. 3 Running the quiz Learn to ask questions in turn with the run method. 6 min
  4. 4 Score calculation Learn correct count with the score calculation method. 6 min
  5. 5 Putting it together Combine the Quiz class with a menu loop. 6 min
8
Collections
6 lessons · 30 min
  1. 1 List Learn dynamic arrays with List<T>. 5 min
  2. 2 Set Learn unique collections with Set<T>. 5 min
  3. 3 Map Learn key-value collections with Map<K,V>. 5 min
  4. 4 Queue Learn FIFO collections with Queue<T>. 5 min
  5. 5 Iterable Learn iterable collections with Iterable. 5 min
  6. 6 Summary - Collections Combine List, Set and Map to write a phone book. 5 min
9
Collection methods
6 lessons · 30 min
  1. 1 map Learn transformation with .map. 5 min
  2. 2 where Learn filtering with .where. 5 min
  3. 3 fold and reduce Learn aggregation with fold and reduce. 5 min
  4. 4 forEach Learn side-effect loops with forEach. 5 min
  5. 5 any and every Learn condition checks with any and every. 5 min
  6. 6 Summary - Collection methods Combine map, where and fold to write a sales report. 5 min
10
Project: Library appProject
5 lessons · 30 min
  1. 1 Model design Design the skeleton of Book and Member classes. 6 min
  2. 2 Library class Set up collection management with the Library class. 6 min
  3. 3 Checking out Write the checkout flow with checkout and return methods. 6 min
  4. 4 Search and filter Write search and filtering with collection methods. 6 min
  5. 5 Putting it together Combine the Library class with a menu loop. 6 min
11
Async in depth
6 lessons · 30 min
  1. 1 Future Learn asynchronous operations with Future. 5 min
  2. 2 async/await Learn async code with async and await. 5 min
  3. 3 Future chaining Learn Future chaining with .then and .catchError. 5 min
  4. 4 Future.wait Learn parallel Futures with Future.wait. 5 min
  5. 5 Completer Learn manual Future control with Completer. 5 min
  6. 6 Summary - Async Combine async/await, Future.wait and Completer to write a parallel downloader. 5 min
12
Streams
6 lessons · 30 min
  1. 1 What are streams? Learn the stream concept and event sequences. 5 min
  2. 2 Listening to streams Learn to listen to streams with listen. 5 min
  3. 3 Stream transformation Learn stream transformation with map and where. 5 min
  4. 4 asyncExpand Learn stream chaining with asyncExpand. 5 min
  5. 5 StreamController Learn to create streams with StreamController. 5 min
  6. 6 Summary - Streams Combine listen, map and StreamController to write an event logger. 5 min
13
Type aliases
6 lessons · 30 min
  1. 1 typedef Learn function types with typedef. 5 min
  2. 2 Type alias Learn Dart 3 type aliases. 5 min
  3. 3 Record Learn tuples with Dart 3 Records. 5 min
  4. 4 Pattern matching Learn Dart 3 pattern matching and destructuring. 5 min
  5. 5 switch expression Learn expressions with switch expressions. 5 min
  6. 6 Summary - Type aliases Combine typedef, Record and pattern matching to write a DTO system. 5 min
14
Metadata and annotations
6 lessons · 30 min
  1. 1 Metadata Learn metadata with @annotation. 5 min
  2. 2 Custom annotations Learn to write your own annotation class. 5 min
  3. 3 @override Learn the @override annotation. 5 min
  4. 4 @deprecated Learn the @deprecated annotation. 5 min
  5. 5 Reflection Learn reflection with dart:mirrors. 5 min
  6. 6 Summary - Metadata Combine annotations, @override and reflection to write an annotation processor. 5 min
15
Testing
6 lessons · 30 min
  1. 1 dart test Learn the dart test framework. 5 min
  2. 2 test and expect Learn assertions with test and expect. 5 min
  3. 3 group Learn test organization with group. 5 min
  4. 4 setUp and tearDown Learn fixtures with setUp and tearDown. 5 min
  5. 5 Mock Learn mocking with mockito. 5 min
  6. 6 Summary - Testing Combine test, expect and mock to write a calculator test. 5 min
16
File I/O
6 lessons · 30 min
  1. 1 dart:io Learn file operations with dart:io. 5 min
  2. 2 File.readAsString Learn to read files with File.readAsString. 5 min
  3. 3 File.writeAsString Learn to write files with File.writeAsString. 5 min
  4. 4 exists Learn to check file existence with File.exists. 5 min
  5. 5 Directory Learn folder operations with Directory. 5 min
  6. 6 Summary - File I/O Combine readAsString, writeAsString and exists to write a notes app. 5 min
17
Packages
6 lessons · 30 min
  1. 1 pub Learn the pub package manager. 5 min
  2. 2 pubspec.yaml Learn the pubspec.yaml configuration. 5 min
  3. 3 pub get Learn to install packages with pub get. 5 min
  4. 4 import Learn to import packages with import. 5 min
  5. 5 pub publish Learn to publish packages with pub publish. 5 min
  6. 6 Summary - Packages Combine pubspec, pub get and import to set up a package structure. 5 min
18
Advanced error handling
6 lessons · 30 min
  1. 1 Exception hierarchy Learn the exception hierarchy and custom exceptions. 5 min
  2. 2 Error vs Exception Learn the difference between Error and Exception. 5 min
  3. 3 Stack trace Learn stack trace and debugging. 5 min
  4. 4 Result pattern Learn functional error handling with the Result pattern. 5 min
  5. 5 Async errors Learn async errors and try/catch. 5 min
  6. 6 Summary - Advanced error handling Combine hierarchy, Result and async errors to write a robust service. 5 min
19
Documentation
6 lessons · 29 min
  1. 1 dartdoc Learn documentation generation with dartdoc. 4 min
  2. 2 Doc comments Learn documentation comments with ///. 5 min
  3. 3 Markdown Learn documentation formatting with Markdown. 5 min
  4. 4 @param and @return Learn @param and @return tags. 5 min
  5. 5 Example code Learn example code in documentation. 5 min
  6. 6 Summary - Documentation Combine dartdoc, /// and Markdown to write a documented library. 5 min
20
Intermediate finalProject
5 lessons · 30 min
  1. 1 Project design Design the skeleton of the intermediate final mini app. 6 min
  2. 2 OOP model Set up the class hierarchy and interfaces. 6 min
  3. 3 Collections Write data filtering with List, Map and Stream. 6 min
  4. 4 File I/O Save and load data with dart:io. 6 min
  5. 5 Putting it together Combine all layers into a working app. 6 min

Learn isolates, concurrency, metaprogramming, testing and Dart Server (shelf) in Dart.

1
Isolates
6 lessons · 30 min
  1. 1 What are isolates? Learn the Dart concurrency model with isolates. 5 min
  2. 2 Isolate.spawn Learn new isolates with Isolate.spawn. 5 min
  3. 3 SendPort Learn communication with SendPort and ReceivePort. 5 min
  4. 4 compute Learn simple isolates with compute. 5 min
  5. 5 Isolate vs thread Learn the difference between isolates and threads. 5 min
  6. 6 Summary - Isolates Combine spawn, SendPort and compute to write a parallel computation. 5 min
2
Concurrency
6 lessons · 30 min
  1. 1 Event loop Learn the Dart event loop model. 5 min
  2. 2 Microtasks Learn the microtask and macrotask queues. 5 min
  3. 3 Future scheduler Learn the relation between Future and the scheduler. 5 min
  4. 4 scheduleMicrotask Learn microtasks with scheduleMicrotask. 5 min
  5. 5 Zone Learn context management with Zone. 5 min
  6. 6 Summary - Concurrency Combine event loop, microtasks and Zone to write a scheduler. 5 min
3
Advanced streams
6 lessons · 30 min
  1. 1 Broadcast streams Learn multiple listeners with broadcast streams. 5 min
  2. 2 Stream transformer Learn transformation with StreamTransformer. 5 min
  3. 3 debounce and throttle Learn debounce and throttle. 5 min
  4. 4 Stream errors Learn stream errors and onError. 5 min
  5. 5 asyncExpand Learn stream chaining with asyncExpand. 5 min
  6. 6 Summary - Advanced streams Combine broadcast, transformer and debounce to write an event processor. 5 min
4
Metaprogramming
6 lessons · 30 min
  1. 1 Reflection Learn reflection with dart:mirrors. 5 min
  2. 2 Mirror Learn InstanceMirror and ClassMirror. 5 min
  3. 3 Dynamic invoke Learn dynamic invoke with reflectable. 5 min
  4. 4 Macro Learn the Dart 3 macro experiment. 5 min
  5. 5 Code generation Learn code generation with source_gen. 5 min
  6. 6 Summary - Metaprogramming Combine reflection, mirrors and source_gen to write a code generator. 5 min
5
Shelf server
6 lessons · 30 min
  1. 1 shelf Learn HTTP servers with shelf. 5 min
  2. 2 Handler Learn request handling with a shelf Handler. 5 min
  3. 3 Middleware Learn middleware with shelf Middleware. 5 min
  4. 4 Router Learn routing with shelf_router. 5 min
  5. 5 JSON response Learn JSON responses with shelf. 5 min
  6. 6 Summary - Shelf Combine Handler, Middleware and Router to write an API. 5 min
6
HTTP client
6 lessons · 30 min
  1. 1 http package Learn the HTTP client with the http package. 5 min
  2. 2 GET Learn GET requests with http.get. 5 min
  3. 3 POST Learn POST requests with http.post. 5 min
  4. 4 Headers Learn headers and authorization. 5 min
  5. 5 dio Learn the advanced HTTP client with dio. 5 min
  6. 6 Summary - HTTP Combine http.get, http.post and dio to write an API client. 5 min
7
JSON serialization
6 lessons · 30 min
  1. 1 jsonDecode Learn JSON parsing with jsonDecode. 5 min
  2. 2 jsonEncode Learn to produce JSON with jsonEncode. 5 min
  3. 3 fromJson Learn to create objects with fromJson. 5 min
  4. 4 toJson Learn to convert objects to JSON with toJson. 5 min
  5. 5 json_serializable Learn code generation with json_serializable. 5 min
  6. 6 Summary - JSON Combine jsonDecode, fromJson and json_serializable to write an API client. 5 min
8
Database
6 lessons · 30 min
  1. 1 sqflite Learn SQLite with sqflite. 5 min
  2. 2 Database Learn connection and queries with Database. 5 min
  3. 3 CRUD Learn CRUD operations with sqflite. 5 min
  4. 4 Transaction Learn atomic operations with Transaction. 5 min
  5. 5 ORM Learn Dart database with the drift ORM. 5 min
  6. 6 Summary - Database Combine sqflite, CRUD and transactions to write a user database. 5 min
9
Web Dart
6 lessons · 30 min
  1. 1 dart2js Learn JavaScript compilation with dart2js. 5 min
  2. 2 dart2wasm Learn WebAssembly with dart2wasm. 5 min
  3. 3 HTML interop Learn DOM access with dart:html. 5 min
  4. 4 JS interop Learn JavaScript interop with dart:js_interop. 5 min
  5. 5 Web framework Learn web frameworks like jaspr. 5 min
  6. 6 Summary - Web Dart Combine dart2js, dart:html and js_interop to write a web component. 5 min
10
CLI applications
6 lessons · 30 min
  1. 1 args Learn CLI arguments with the args package. 5 min
  2. 2 ArgParser Learn option processing with ArgParser. 5 min
  3. 3 stdin/stdout Learn I/O with stdin and stdout. 5 min
  4. 4 Progress bar Learn progress bars with cli_util. 5 min
  5. 5 dcli Learn advanced CLI with dcli. 5 min
  6. 6 Summary - CLI Combine args, ArgParser and stdin to write a CLI tool. 5 min
11
Logging
6 lessons · 30 min
  1. 1 logging Learn logging with the logging package. 5 min
  2. 2 Log levels Learn log levels (info, warning, severe). 5 min
  3. 3 Logger Learn Logger instances and hierarchy. 5 min
  4. 4 Handler Learn log handlers and output targets. 5 min
  5. 5 Structured logging Learn structured logging and JSON format. 5 min
  6. 6 Summary - Logging Combine logging, levels and handlers to write a log system. 5 min
12
Security
6 lessons · 30 min
  1. 1 crypto Learn hashing with the crypto package. 5 min
  2. 2 HMAC Learn message authentication with Hmac. 5 min
  3. 3 encrypt Learn encryption with the encrypt package. 5 min
  4. 4 Secure random Learn secure random with Random.secure. 5 min
  5. 5 Password hashing Learn password hashing (bcrypt). 5 min
  6. 6 Summary - Security Combine crypto, HMAC and encrypt to write an encryptor. 5 min
13
Performance
6 lessons · 30 min
  1. 1 Benchmark Learn performance measurement with benchmark. 5 min
  2. 2 Stopwatch Learn time measurement with Stopwatch. 5 min
  3. 3 Memory Learn memory usage. 5 min
  4. 4 Optimization Learn common optimization techniques. 5 min
  5. 5 Profiling Learn DevTools profiling. 5 min
  6. 6 Summary - Performance Combine benchmark, Stopwatch and profiling to write a perf tool. 5 min
14
Advanced finalProject
5 lessons · 30 min
  1. 1 Project design Design the skeleton of the advanced final mini app. 6 min
  2. 2 Shelf API Set up the REST API skeleton with Shelf. 6 min
  3. 3 Database Add data persistence with sqflite. 6 min
  4. 4 Concurrency Add parallel processing with Isolate. 6 min
  5. 5 Putting it together Combine all layers into a working mini service. 6 min

Learn language design, compiler internals, FFI, native extensions and large-scale architecture in Dart.

1
Language design
6 lessons · 30 min
  1. 1 Dart design Learn Dart language design principles. 5 min
  2. 2 Sound null safety Learn sound null safety and the type system. 5 min
  3. 3 Type system Learn the Dart type system and variance. 5 min
  4. 4 Subtyping Learn subtyping and polymorphism. 5 min
  5. 5 Records and patterns Learn records and patterns design. 5 min
  6. 6 Summary - Language design Combine null safety, type system and records to write a type system summary. 5 min
2
Compiler internals
6 lessons · 30 min
  1. 1 Compilation pipeline Learn the Dart compilation pipeline. 5 min
  2. 2 AST Learn the Abstract Syntax Tree (AST) structure. 5 min
  3. 3 Kernel Learn Dart Kernel and intermediate representation. 5 min
  4. 4 Code generation Learn code generation and backends. 5 min
  5. 5 dartaotruntime Learn the difference between AOT and JIT runtimes. 5 min
  6. 6 Summary - Compiler internals Combine pipeline, AST and Kernel to write a compiler summary. 5 min
3
FFI
6 lessons · 30 min
  1. 1 dart:ffi Learn C interop with dart:ffi. 5 min
  2. 2 DynamicLibrary Learn native loading with DynamicLibrary. 5 min
  3. 3 Native function Learn native functions with lookupFunction. 5 min
  4. 4 Struct Learn C structs with Struct. 5 min
  5. 5 Pointer Learn memory management with Pointer. 5 min
  6. 6 Summary - FFI Combine DynamicLibrary, lookupFunction and Pointer to write a native wrapper. 5 min
4
Native extension
6 lessons · 30 min
  1. 1 What are extensions? Learn the Dart extension concept. 5 min
  2. 2 Extension method Learn to write extension methods. 5 min
  3. 3 Extension operator Learn extension operator overloading. 5 min
  4. 4 Generic extension Learn to write generic extensions. 5 min
  5. 5 Extension vs subclass Learn the difference between extension and subclass. 5 min
  6. 6 Summary - Native extension Combine extension methods, operators and generics to write a string helper extension. 5 min
5
Build system
6 lessons · 30 min
  1. 1 build_runner Learn code generation with build_runner. 5 min
  2. 2 Builder Learn code generators with Builder. 5 min
  3. 3 source_gen Learn source code generation with source_gen. 5 min
  4. 4 Analyzer Learn the dart analyzer and plugins. 5 min
  5. 5 Custom lint Learn to write custom lint rules. 5 min
  6. 6 Summary - Build system Combine build_runner, Builder and source_gen to write a code generator. 5 min
6
Architecture
6 lessons · 30 min
  1. 1 Clean architecture Learn clean architecture principles. 5 min
  2. 2 Feature-based Learn feature-based architecture. 5 min
  3. 3 Repository Learn the repository pattern. 5 min
  4. 4 Dependency injection Learn dependency injection. 5 min
  5. 5 SOLID Learn SOLID principles. 5 min
  6. 6 Summary - Architecture Combine clean, repository and DI to write an architecture skeleton. 5 min
7
Advanced testing
6 lessons · 30 min
  1. 1 Integration tests Learn to write integration tests. 5 min
  2. 2 Property tests Learn property-based testing. 5 min
  3. 3 Advanced mocking Learn advanced mock and stub. 5 min
  4. 4 Coverage Learn test coverage measurement. 5 min
  5. 5 Golden tests Learn golden tests and snapshots. 5 min
  6. 6 Summary - Advanced testing Combine integration, property and coverage to write a test suite. 5 min
8
Expert finalProject
5 lessons · 30 min
  1. 1 Project design Design the skeleton of the expert final mini app. 6 min
  2. 2 FFI Write native integration with dart:ffi. 6 min
  3. 3 Codegen Write code generation with build_runner. 6 min
  4. 4 Architecture Combine layers with clean architecture. 6 min
  5. 5 Putting it together Combine all expert topics into a working mini app. 6 min

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Are the Dart lessons free?

Yes. All 362 lessons of the Dart course are free and you can start without an account.

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Lessons take 2–8 minutes. The whole course is about 30 hours; with 15–20 minutes a day you can finish in a few months.

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Next step Kotlin

Learn Kotlin 2.x from null safety, OOP, coroutines, Flow to Ktor and Kotlin Multiplatform with hands-on projects.