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Rust

Overview​

Rust provides memory safety without a GC through ownership, borrowing, and lifetimes—ideal for systems programming, WebAssembly, CLIs, and performance-critical services. The Cargo toolchain, crates.io ecosystem, and strong community docs lower adoption friction.

Key concepts​

  • Ownership — Each value has one owner; moves vs copies.
  • Borrowing — Shared &T or exclusive &mut T references.
  • Lifetimes — Compiler-proven reference validity.
  • Result / Option — Explicit error and absence handling.
  • Fearless concurrency — Type system catches many data races.

Borrow check (conceptual)​

Sample: CLI-friendly function​

fn divide(a: f64, b: f64) -> Result<f64, &'static str> {
    if b == 0.0 {
        Err("division by zero")
    } else {
        Ok(a / b)
    }
}

fn main() {
    println!("{:?}", divide(10.0, 2.0));
}

References​