12 Overloading [over]

12.2 Overload resolution [over.match]

12.2.2 Candidate functions and argument lists [over.match.funcs]

12.2.2.3 Operators in expressions [over.match.oper]

Table 18: Relationship between operator and function call notation [tab:over.match.oper]
Subclause
Expression
As member function
As non-member function
@a
(a).operator@ ( )
operator@(a)
a@b
(a).operator@ (b)
operator@(a, b)
a=b
(a).operator= (b)
a[b]
(a).operator[](b)
a->
(a).operator->( )
a@
(a).operator@ (0)
operator@(a, 0)