HiDefender questions

• Remove only the trailing elements of a Vec that match a condition
• Cannot change one value of an enum because it's a re-assignment of an immutable variable
• How can I pass multiple elements from a collection into a function with one or more of the elements being mutable?
• Reverse specific key when sorting with multiple keys
• Why can't None be cloned for a generic Option<T> when T doesn't implement Clone?
• Is there a way to alias multiple derives as a single one?
• Reverse iterating over a &vec versus vec.iter()
• Is it possible to unpack a tuple into function arguments?

HiDefender answers