Rust

1

Rust basics

6 lessons · 25 min

1. 1 What is Rust? Learn that Rust is a safe, fast and concurrent systems language. 4 min
2. 2 Project with Cargo Learn to set up a project with cargo new, Cargo.toml and the target folder. 4 min
3. 3 Your first program Write your first Rust program with fn main and println!. 4 min
4. 4 println! and formatting Print variables with the println! macro and the {} placeholder. 4 min
5. 5 Comments Document your code with // and /* */ comments. 4 min
6. 6 Summary - Rust basics Combine fn main, println! and comments to write your first program. 5 min

2

Variables

6 lessons · 25 min

1. 1 Variables with let Define variables with the let keyword. 4 min
2. 2 Mutability with mut Update variables with the mut keyword. 4 min
3. 3 Constants with const Define compile-time constants with const. 4 min
4. 4 Static variables Define static-lifetime variables with static. 4 min
5. 5 Shadowing Reuse a name by shadowing the previous binding. 4 min
6. 6 Summary - Variables Combine let, mut, const and shadowing to build a counter program. 5 min

3

Data types

6 lessons · 25 min

1. 1 Integers Learn signed and unsigned integer types like i32 and u64. 4 min
2. 2 Floating point Learn the f32 and f64 floating-point types. 4 min
3. 3 Bool and char Store logic and characters with bool and char types. 4 min
4. 4 Tuple Group different types in a single value with a tuple. 4 min
5. 5 Array Learn fixed-size arrays of type [T; n]. 4 min
6. 6 Summary - Data types Combine different types to build a grade-calculating program. 5 min

4

Strings

6 lessons · 25 min

1. 1 &str vs String Learn the difference and use cases of &str and String. 4 min
2. 2 Creating a String Learn String::new, String::from and to_string constructors. 4 min
3. 3 Concatenating strings Concatenate strings with push_str and the + operator. 4 min
4. 4 format! macro Build a new String with the format! macro. 4 min
5. 5 String length Inspect a string with len, is_empty and chars methods. 4 min
6. 6 Summary - Strings Combine String and &str to build a greeting message. 5 min

5

Project: CalculatorProject

5 lessons · 30 min

1. 1 Project skeleton Set up the calculator project skeleton with main and println!. 6 min
2. 2 Reading input Read number input from the user with std::io::stdin. 6 min
3. 3 Computing Compute the result with trim, parse and arithmetic operations. 6 min
4. 4 Error handling Handle parse errors with Result and warn the user. 6 min
5. 5 Loop and exit Keep calculating with loop, break and a quit command. 6 min

6

Functions

6 lessons · 25 min

1. 1 Defining with fn Define functions with the fn keyword. 4 min
2. 2 Parameters Learn function parameters and their types. 4 min
3. 3 Return value Specify the return type with the -> arrow. 4 min
4. 4 Expressions and statements Learn the difference between expressions and statements. 4 min
5. 5 Early return Return early with the return keyword. 4 min
6. 6 Summary - Functions Combine parameters, returns and expressions to build calculation functions. 5 min

7

Control flow

6 lessons · 25 min

1. 1 if-else Branch with if, else if and else. 4 min
2. 2 match basics Match a value against patterns with match. 4 min
3. 3 loop Loop forever with loop and exit with break. 4 min
4. 4 while loop Loop while a condition holds with while. 4 min
5. 5 for loop Iterate over an iterator with for. 4 min
6. 6 Summary - Control flow Combine if, match and loops to build a number guessing game. 5 min

8

Ownership

6 lessons · 25 min

1. 1 What is ownership? Learn what the ownership rules do for you. 4 min
2. 2 Move semantics See how ownership transfers through moves. 4 min
3. 3 Copy trait Learn how Copy types are duplicated instead of moved. 4 min
4. 4 Functions and ownership See how passing a value into a function affects ownership. 4 min
5. 5 Return and ownership See how returning a value transfers ownership back. 4 min
6. 6 Summary - Ownership Combine move, Copy and function calls to trace ownership flow. 5 min

9

Borrowing

6 lessons · 25 min

1. 1 References Create references with the & operator. 4 min
2. 2 Mutable reference Take a mutable reference with &mut. 4 min
3. 3 Borrowing rules Learn the rules for multiple references at the same time. 4 min
4. 4 Dangling reference See how Rust prevents dangling references. 4 min
5. 5 References and functions Pass references into functions and return them. 4 min
6. 6 Summary - Borrowing Write a function that increments a counter via & and &mut references. 5 min

10

Slices

6 lessons · 25 min

1. 1 String slices Reference part of a string with &str slices. 4 min
2. 2 Slice syntax Learn the [a..b] and [a..] slice syntax. 4 min
3. 3 Array slices Slice part of an array or vector with &[T]. 4 min
4. 4 Slices and functions Pass slices to functions to borrow data. 4 min
5. 5 Range types Learn the Range and RangeInclusive types. 4 min
6. 6 Summary - Slices Combine string and array slices to write a first-word function. 5 min

11

Project: Guessing gameProject

5 lessons · 30 min

1. 1 Game skeleton Set up the guessing game welcome screen with main and println!. 6 min
2. 2 Reading input Read the user's guess with std::io::stdin. 6 min
3. 3 Comparing numbers Parse the guess into a number and compare with Ordering. 6 min
4. 4 Random number Generate a secret number with the rand crate. 6 min
5. 5 Loop and exit End the game on a correct guess with loop and break. 6 min

12

Structs

6 lessons · 25 min

1. 1 Struct definition Define a fielded struct with struct. 4 min
2. 2 Creating an instance Create a struct instance and access its fields. 4 min
3. 3 Tuple struct Learn the tuple struct type and when to use it. 4 min
4. 4 Unit-like struct Get to know the fieldless unit-like struct. 4 min
5. 5 Field update Move fields from one struct to another with the .. syntax. 4 min
6. 6 Summary - Structs Combine fields and instantiation to build a point struct. 5 min

13

Methods

6 lessons · 25 min

1. 1 impl block Define methods on a struct with impl. 4 min
2. 2 self parameter Call methods through &self and access fields. 4 min
3. 3 &mut self Define methods that mutate the struct with &mut self. 4 min
4. 4 Associated functions Build constructors with associated functions that take no self. 4 min
5. 5 Multiple impl blocks Write multiple impl blocks for a single struct. 4 min
6. 6 Summary - Methods Combine impl, &self and &mut self to compute a Rectangle's area. 5 min

14

Enums

6 lessons · 25 min

1. 1 Enum definition Define enumerations with enum. 4 min
2. 2 Variants Construct and use enum variants. 4 min
3. 3 Variants with data Define enum variants that carry data. 4 min
4. 4 Option<T> Learn the Option<T> type and its Some/None variants. 4 min
5. 5 Option instead of null Learn the advantages of Option over null. 4 min
6. 6 Summary - Enums Combine data-carrying enums and Option to model an IP address type. 5 min

15

Pattern matching

6 lessons · 25 min

1. 1 match patterns Match against different patterns with match. 4 min
2. 2 Value binding Bind matched values with pattern variables. 4 min
3. 3 if let Match a single pattern concisely with if let. 4 min
4. 4 while let Loop while a pattern matches with while let. 4 min
5. 5 _ wildcard Catch all remaining cases in one arm with _. 4 min
6. 6 Summary - Pattern matching Combine match, if let and the _ wildcard to build a command interpreter. 5 min

16

Project: To-do CLIProject

5 lessons · 30 min

1. 1 Task model Define the Todo struct and its fields. 6 min
2. 2 Adding Write a function that appends a new task to Vec<Todo>. 6 min
3. 3 Listing Print tasks with a for loop. 6 min
4. 4 Marking done Mark a task done by index. 6 min
5. 5 Reading commands Read command-line arguments with std::env::args. 6 min

17

Vectors

6 lessons · 25 min

1. 1 Vec<T> Create dynamic arrays with Vec<T>. 4 min
2. 2 Push and pop Add and remove elements with push and pop. 4 min
3. 3 Index and get Access vector elements safely with index and get. 4 min
4. 4 Looping a vector Iterate vector elements with for. 4 min
5. 5 with_capacity Reserve capacity up front with with_capacity for better performance. 4 min
6. 6 Summary - Vectors Combine push, get and for to build a shopping cart. 5 min

18

Advanced strings

6 lessons · 25 min

1. 1 String and &str conversion Learn conversion methods between String and &str. 4 min
2. 2 chars and bytes Split a string into chars or bytes iterators. 4 min
3. 3 Slicing strings Learn the correct way to slice a substring. 4 min
4. 4 contains and replace Search with contains and replace with replace. 4 min
5. 5 split and join Split with split and join with join. 4 min
6. 6 Summary - Advanced strings Combine split, contains and replace to build a text filter. 5 min

19

Error handling

6 lessons · 25 min

1. 1 Result<T, E> Learn the Result<T, E> type and its Ok/Err variants. 4 min
2. 2 panic! Learn unrecoverable errors with panic!. 4 min
3. 3 ? operator Propagate errors automatically to the caller with ?. 4 min
4. 4 match and Result Handle both arms of a Result with match. 4 min
5. 5 unwrap and expect Learn the unwrap and expect shortcuts and their risks. 4 min
6. 6 Summary - Error handling Combine Result, ? and match to build a number-reading function. 5 min

20

Beginner finalFinal

4 lessons · 28 min

1. 1 Vowel counter Write a program that counts vowels in a string. 7 min
2. 2 Average calculator Write and test a function that computes the average of a Vec. 7 min
3. 3 Bank account Model a simple bank with an Account struct and methods. 7 min
4. 4 Temperature converter Build a CLI that converts between Celsius and Fahrenheit. 7 min