What's wrong with defining operator == but not defining Equals() or GetHashCode()?

Question

For the code below

public struct Person
{
    public int ID;
    public static bool operator ==(Person a, Person b) { return  a.Equals(b); }
    public stati         


        

Answer 1

Read the MSDN pages.

CS0660

CS0661

The compiler is basically saying: "Since you are saying know how to compare your object, you should make it compare that way all the time."