get() returns Option<T> which you need to match against, and if it's None then you may have no choice but to mark it unreachable!() which will panic in debug co

get() returns Option<T> which you need to match against, and if it's None then you may have no choice but to mark it unreachable!() which will panic in debug compiles. Or you can use get_unchecked which is unsafe and avoids the bounds check. If you pass the bounds check up higher then you have no risk of panic. My point is that forbidding code from panicking isn't that useful - you still need to audit the code to make sure it's correct.