Best Rust Programming Books to Buy in October 2025
The Rust Programming Language, 2nd Edition
Programming Rust: Fast, Safe Systems Development
Rust for Rustaceans: Idiomatic Programming for Experienced Developers
Rust in Action
Rust Programming: A Practical Guide to Fast, Efficient, and Safe Code with Ownership, Concurrency, and Web Programming (Rheinwerk Computing)
Zero To Production In Rust: An introduction to backend development
The Rust Programming Language
Rust Atomics and Locks: Low-Level Concurrency in Practice
Asynchronous Programming in Rust: Learn asynchronous programming by building working examples of futures, green threads, and runtimes
Refactoring to Rust
In Rust, the underscore symbol "_" is used as a placeholder to ignore or disregard the value of a variable or parameter. This can be helpful in situations where a value is not needed or where the compiler would otherwise throw an error for an unused variable. Additionally, the underscore can also be used in patterns to match any value without binding it to a specific variable.
How to define modules in Rust?
In Rust, modules are used to organize code into different parts, allowing for better structuring and organization of the codebase. Modules can be defined using the mod keyword followed by the module name, like this:
mod my_module { // Code inside the module goes here }
Modules can also be placed in separate files to keep the codebase more organized. To define a module in a separate file, create a new file with the same name as the module and use the mod keyword followed by the file path, like this:
// In my_module.rs mod my_module;
Then, in your main project file, you can use the module by importing it with the mod keyword followed by the module name, like this:
mod my_module;
You can also nest modules within other modules by using the same syntax, like this:
mod outer_module { mod inner_module { // Code inside the inner module goes here } }
By organizing code into modules, Rust makes it easier to manage and understand large codebases, improving overall code readability and maintainability.
What is the Rust language based on?
The Rust language is based on the Mozilla Research project called "Servo," which aimed to develop a new web browser engine. Rust was created as a systems programming language with a strong emphasis on safety, concurrency, and performance.
How to perform input/output operations in Rust?
In Rust, input/output operations can be performed using the std::io module. Here is a simple example of reading from standard input and writing to standard output:
use std::io;
fn main() { // Reading input from standard input let mut input = String::new(); io::stdin().read_line(&mut input).expect("Failed to read input");
// Writing output to standard output
println!("You entered: {}", input);
}
You can also read and write to files in Rust using the File struct from the std::fs module. Here is an example of reading from a file:
use std::fs::File; use std::io::{self, BufRead, BufReader};
fn main() -> io::Result<()> { // Open the file in read-only mode let file = File::open("input.txt")?; let reader = BufReader::new(file);
// Read lines from the file
for line in reader.lines() {
println!("{}", line?);
}
Ok(())
}
These are just a few examples of how input/output operations can be performed in Rust. The standard library provides a wide range of tools for working with input and output, so be sure to check out the Rust documentation for more information.