Variables ========= Variables are defined using the `let` keyword. Variable names must begin with a lowercase letter or an underscore (`_`). .. prismjs:: verve let var = 13 Variables are immutable, and there is no syntax for changing the value of a variable. It's possible however to shadow variables both locally and in an inner scope. .. prismjs:: verve let x = 42 print(x) // 42 let x = 13 print(x) // 13 if True { let x = 7 print(x) // 7 } print(x) // 13