Rust

Things to know

• no variadic functions (unknown number of parameters), except for macros println!(...).
• dbg!() allows to debug an expression and also returns the result

  • 
    #![allow(unused)]
    fn main() {
    let a = dbg!(5+1)+8;
    println!("{a}");
    }
    

Good practice

• rust-api guidelines

Build

By default, binaries are compiled in unwind mode which raises the call stack. Using abort allows to have smaller binaries but the Drop is not done (memory not cleared).

[profile.release]
panic = 'abort'

Performing a panic in a panic is equivalent to an abort, it is a bad practice.

Linters

• Clippy: A collection of lints to catch common mistakes and improve your Rust code.
• miri: An interpreter for Rust's mid-level intermediate representation.
• valgrind: detect many memory management and threading bugs, and profile your programs in detail.
• cargo-geiger: Detects usage of unsafe Rust in a Rust crate and its dependencies.