01 · Flutter / Dart
Install Dart and run your first program
Create a text file containing Dart code and run it on your computer.
54 Tutorials · DE / EN
Tutorials · Basics
Start with no prior knowledge. Small examples explain the language. Medium guides connect building blocks. Large tutorials walk through complete project workflows.
Flutter / Dart
Small
02 · Flutter / Dart
Variables, data types and missing values
Store values under names and distinguish text, numbers and booleans.
03 · Flutter / Dart
Operators and decisions with if
Compare values and execute instructions only when a condition matches.
04 · Flutter / Dart
Loops: repeat work
Process several values and stop repetition in a controlled way.
05 · Flutter / Dart
Functions, parameters and return values
Encapsulate a calculation in a reusable function.
06 · Flutter / Dart
Lists, sets and maps
Choose a suitable collection for ordered items, unique values or lookups.
07 · Flutter / Dart
Classes and constructors
Group related values into your own data type.
08 · Flutter / Dart
Null safety, errors and Future
Handle missing values and wait for an asynchronous result.
09 · Flutter / Dart
Your first Flutter interface
Build a screen from widgets and update it with a button.
Medium
10 · Flutter / Dart
Validate forms and navigate between screens
Validate input, dispose controllers and pass a confirmed value to a second screen.
React / TypeScript
Small
01 · React / TypeScript
JavaScript: your first program
Run a JavaScript file and understand the difference between a browser and Node.js.
02 · React / TypeScript
Variables and data types in JavaScript
Use const and let and identify text, numbers, booleans and missing values.
03 · React / TypeScript
Operators, comparisons and if
Choose between workflows based on a condition.
04 · React / TypeScript
Loops in JavaScript
Iterate over values and calculate a total.
05 · React / TypeScript
Functions and scope
Write reusable calculations and understand local variables.
06 · React / TypeScript
Arrays, objects and new values
Describe records and create changes without overwriting the old value.
07 · React / TypeScript
HTML and CSS: the foundation of a web interface
Open a simple web page and separate content from styling.
08 · React / TypeScript
TypeScript types and modules
Describe allowed data shapes and check them before execution.
09 · React / TypeScript
Promises, async/await and errors
Wait for eventual results and handle failed tasks.
Medium
10 · React / TypeScript
First React app: JSX, props and state
Render components and change state through a user action.
Java
Small
01 · Java
Install Java and run the first program
Compile a Java file and run the resulting program.
02 · Java
Variables and data types in Java
Distinguish primitive values, text and missing references.
03 · Java
Operators and conditions
Check numbers and text using appropriate comparisons.
04 · Java
Loops and controlled repetition
Process a sequence of values using one shared rule.
05 · Java
Methods, parameters and results
Separate a calculation from its output.
06 · Java
Arrays, lists, sets and maps
Choose a collection for ordering, uniqueness or lookup.
07 · Java
Classes and constructors
Create a custom data type with controlled initial values.
08 · Java
Interfaces and composition
Define a contract and replace its implementation.
09 · Java
Exceptions and safe file access
Handle a failure and close a file even when work stops.
Medium
10 · Java
Maven, modules and ports/adapters
Understand a Java build and dependency direction.