https://doc.rust-lang.org/stable/book/ch03-03-how-functions-work.html

- Rust uses snake case as the standard style for variable and funtion names (like_this)
- Arguments in rust functions require that you specify the type
  - Example:
    - fn main() {
        another_function(5);
      }

      fn another_function(x: i32) {
        println!("The value of x is: {}", x);
      }
- Expressions dont end with semicolons
- Functions automatically return the last line in them as the return value
- The value of the return value is specified like so:
  - fn five() -> i32 {
        5
    }
- You can use a return statement to return early