Lang.Rust

--j id: KrmgjrqydqC65v4Za1t6c title: Rust desc: "" updated: 1659872186436 created: 1622307866939

The main thing why i and other people want rust ... is that it does not have programming.undefined-behavior in the safe subset.

Features

functions use the fn keyword. This is just like function in javascript.
Macros are called just like functions but with the additional ! before the parenthesis.
Strings in rust use double quotes ". You cannot use ' or ```.
Unlike JavaScript, semicolons in Rust are not optional. Every statement in Rust must end with a semicolon.
Every Rust program needs to have a main function.
all variables created using let are immutable by default. (You just can't assign them more than once.)
The mut keyword allows the variable to be mutable.
const are compile time known constants, Rust will not infer their type for you and you will need to provide a type
Since most of us are using 64-bit machines these days, stick to u64, i64 and f64 unless you have a good reason.
The :: in Rust is much like the dot operator in JavaScript when it comes to types and namespaces.
all elements in an Array must be of the same type.
cargo will by default look for src/main.rs and use the package.name field as the binary name
Packages can have lang.rust.t.target#library, lang.rust.t.target#binary, lang.rust.t.target#example, lang.rust.t.target#test, and lang.rust.t.target#benchmark targets.