Iterator Example - Rust Typing CST Test
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Iterator Example — Rust Code
Uses iterators and map/filter to transform a vector.
fn main() {
let numbers = vec![1, 2, 3, 4, 5];
let evens: Vec<i32> = numbers.iter().filter(|&&x| x % 2 == 0).map(|x| x * x).collect();
println!("Evens squared: {:?}", evens);
}Rust Language Guide
A modern, memory-safe, high-performance systems programming language focused on safety, concurrency, and zero-cost abstractions, designed to replace C/C++ in critical software.
Primary Use Cases
- ▸Systems programming
- ▸WebAssembly applications
- ▸Cloud-native backends
- ▸Blockchain and cryptographic systems
- ▸Embedded systems
- ▸Game engines
- ▸High-performance CLI tools
Notable Features
- ▸Memory safety without garbage collection
- ▸Ownership and borrowing system
- ▸Zero-cost abstractions
- ▸Powerful package manager (Cargo)
- ▸Pattern matching and algebraic data types
- ▸Fearless concurrency
Origin & Creator
Created by Graydon Hoare at Mozilla Research, first public release in 2010, and stable 1.0 released in 2015. Originated as a personal project, later backed by Mozilla. Evolved through Rust 2015, 2018, and 2021 editions, adding async/await, improved ergonomics, better tooling, Cargo, and a richer standard library.
Industrial Note
Highly adopted in cloud infrastructure, operating system components, cryptography, blockchain systems, safety-critical systems, and WebAssembly. Used by Microsoft, Amazon, Google, Cloudflare, and Meta for secure and high-performance services.