`x`, the value of the Vector access, only exists within the context of the first block. It does not exist in any other scope. This makes it impossible to access

`x`, the value of the Vector access, only exists within the context of the first block. It does not exist in any other scope. This makes it impossible to access when the result is not valid. > If Rust compiler would choke when "else" clause in your example is not present The compiler won't choke, but it will stop you from accessing the value. It doesn't matter if you omit the `else` clause or not, the type system ensures that you can't access invalid values. Here's a bit of an example based off of @Ygg2's code: https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=f9f779c0e4885016773bee8bf4e57363 https://play.rust-lang.org/?version=stable&mode=debug&editio...