Static and Constant Variables

    You can declare compile-time constants:

    You can also declare static variables:

    2. fn main() {
    3. }

    We will look at mutating static data in the chapter on Unsafe Rust.

    • Mention that const behaves semantically similar to C++’s .
    • It isn’t super common that one would need a runtime evaluated constant, but it is helpful and safer than using a static.