Exploring Basic Data Types in Rust

Introduction to Basic Data Types in Rust

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Exploring the String Data Type

Last but not least, we have String . String is used to store a sequence of char elements. There are two types of Strings in Rust. String literals are immutable and have a type of &str . Rust let welcome1 = "Hello World!"; // Creates a string literal println!("{}", welcome1); // This will print: Hello World! On the other hand, a String is by default immutable, but can be made mutable using the mut keyword. Rust let mut welcome2 = String::from("Welcome to Rust!"); // Creates a new String println!("{}", welcome2); // This will print: Welcome to Rust! welcome2 = String::from("Hello Rust World!"); // Changing the value of welcome2 println!("{}", welcome2); // This will print: Hello Rust World!

Lesson Recap

Excellent! You've just explored the basic data types in Rust. You can now handle i32 and f32 for numerical operations, bool for decision-making, char to manage characters, and String to work with textual data. That's a significant amount of new knowledge! Let's consolidate it through practice. The upcoming exercises are designed to help you apply these concepts. Brace yourself, and get ready to dive deeper into the world of Rust!

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Rust

let days_in_week: i32 = 7;
println!("{}", days_in_week);  // This will print: 7

let maximal_integer: i32 = 2147483647;
println!("{}", maximal_integer);  // This will print: 2147483647

let too_big_integer: i32 = 2147483648; // Oops! This will cause a compile error. The number is too large.

Rust

let pi: f32 = 3.141592;
println!("{}", pi);  // This will print: 3.141592

let pi: f32 = 3.141592;
println!("{}", pi);  // This will print: 3.141592

Rust

let is_earth_round: bool = true;
println!("{}", is_earth_round);  // This will print: true

let is_earth_flat: bool = false;
println!("{}", is_earth_flat); // This will print: false

let is_earth_round: bool = true;
println!("{}", is_earth_round);  // This will print: true

let is_earth_flat: bool = false;
println!("{}", is_earth_flat); // This will print: false

Rust

let first_letter_of_alphabet: char = 'A';
println!("{}", first_letter_of_alphabet); // This will print: A

let first_letter_of_alphabet: char = 'A';
println!("{}", first_letter_of_alphabet); // This will print: A

Rust

let pi: f32 = 3.141592;
println!("{}", pi);  // This will print: 3.141592

Rust

let is_earth_round: bool = true;
println!("{}", is_earth_round);  // This will print: true

let is_earth_flat: bool = false;
println!("{}", is_earth_flat); // This will print: false

Rust

let first_letter_of_alphabet: char = 'A';
println!("{}", first_letter_of_alphabet); // This will print: A