needs overload operator< and null check

Question

I´m overloading the lessthan-operator in c# and I`m wondering whether this needs to check for null. Below you can find an Example:

public static bool operat         


        

Answer 1

1. It's a bad idea to overload operators on classes. It's ok for structs though.

2. If you do decide to overload an operator on a class, you will either have to:
   a. Include null-check into your logic
   b. Throw exceptions when null is passed in
   c. Don't null check and allow for NullReferenceExceptions (bad)

Basically, it's a bad idea to overload an operator on a class. I'd either turn your class into a struct, or just implement an interface such as IComparable / IEquatable which has guidelines when null values are used in comparisons.