1.7 KiB
1.7 KiB
[over.sub]
12 Overloading [over]
12.4 Overloaded operators [over.oper]
12.4.5 Subscripting [over.sub]
A subscripting operator function is a member function named operator[] with an arbitrary number of parameters.
It may have default arguments.
For an expression of the form
postfix-expression [ expression-listopt ]
the operator function is selected by overload resolution ([over.match.oper]).
If a member function is selected, the expression is interpreted as
postfix-expression . operator [] ( expression-listopt )
[Example 1: struct X { Z operator; Z operator;}; X x; x[{1,2,3}] = 7; // OK, meaning x.operator x[1,2,3] = 7; // OK, meaning x.operatorint a[10]; a[{1,2,3}] = 7; // error: built-in subscript operator a[1,2,3] = 7; // error: built-in subscript operator â end example]