Summary of Rust Standard Library

The Rust Standard Library provides essential features and functionalities that are common across Rust applications. It includes basic data types, traits, and modules that help programmers write efficient and safe code.

Key Concepts

• Modules: The standard library is organized into multiple modules that group related functionalities.
• Data Types: It includes primitive data types (e.g., integers, floats, booleans) and complex types (e.g., strings, vectors).
• Traits: Traits define shared behavior in Rust. They allow different types to implement the same functionality.

Important Modules

• std::io: Handles input and output operations.
• std::fs: Provides functionality for file system operations.
• std::collections: Offers data structures like vectors, hash maps, and linked lists.

Commonly Used Features

• Error Handling: Rust uses the Result and Option types for error handling, promoting safe code practices.
• Concurrency: The standard library includes features for multithreading and asynchronous programming.

Examples

Using std::io

To read user input:

use std::io;

fn main() {
    let mut input = String::new();
    println!("Please enter some input:");
    io::stdin().read_line(&mut input).expect("Failed to read line");
    println!("You entered: {}", input);
}

Working with Collections

Using a vector:

fn main() {
    let mut numbers = vec![1, 2, 3];
    numbers.push(4);
    println!("{:?}", numbers); // Output: [1, 2, 3, 4]
}

Conclusion

The Rust Standard Library is an essential resource for Rust developers, providing the tools and structures needed to write safe and efficient code. Understanding its components is crucial for leveraging the full power of the Rust programming language.