11. Special operators

• These operators must be members:

      =   []  ()  and  ->
  

  This ensures the first arguments are lvalues (see next slide).

• These operators are predefined (i.e. you get them for free):

  
      operator=   operator&   operator, (comma)
  
  

• The following operators cannot be overloaded:

      :: (scope)
      .  (member selector)
      .* (member selection through pointer to member)
  

• Non-member operators must take at least one user-defined type.