I agree that's confusing coming from an imperative context. The core misunderstanding here is that `let` is a binding, not a variable declaration. It's binding

I agree that's confusing coming from an imperative context. The core misunderstanding here is that `let` is a binding, not a variable declaration. It's binding a name to a value, not creating a variable which can be modified. Therefore the `if let` example is saying "if we can bind the value inside the optional to a name", while the regular let example is just saying "bind the optional to x"