Scope

definition a scope is a concept that refers to where values and functions can be accessed --- https://www.codecademy.com/learn/introduction-to-javascript/modules/learn-javascript-scope

example Rust scope

fn main() {
  let x = 1;
  {
    let x = 2;
    println!("{}", x); // 2
  }
  println!("{}", x); // 1
}

#stub