Intel® C++ Compiler 16.0 User and Reference Guide
ConstProxy object provides access to a specific constant primitive, primitive data member, or nested data member within a primitive for an element in a container.
const_accessor [index] or a ConstProxy object’s Data Member Interfaces return ConstProxy objects. That ConstProxy object represents the constant primitive, primitive data member, or nested data member within a primitive for an element in a container. The ConstProxy object has the following features:
A value_type can be exported or imported from the ConstProxy.
Conversion operator is used to export the value_type
Alternatively the ConstProxy can be passed to the function unproxy to export a value_type
Overloads the following operators if the underlying value_type supports the operator
==, !=, <, >, <=, >=, +, -, *, /, %, &&, ||, &, |, ^, ~, *, +, -, !
When an operator is called the following occurs:
value_type is exported
The operator applied to the exported value
returns the result.
Data Member Interface.
For each data member of value_type
A member access method is defined which returns a Member ConstProxy representing just that member.
|
Member Type |
Description |
|---|---|
typedef implementation-defined value_type |
The type of the data the ConstProxy is representing |
|
Member |
Description |
|---|---|
operator value_type const () const; |
Returns: exports a copy of the ConstProxy’s value. NOTE: constant return value prevents rvalue assignment for structs offering some protection against code that expected a modifiable reference. |
auto name_of_values_data_member_1()const; |
Returns: ConstProxy instance representing the 1st data member of the value_type NOTE: actual method name is the name of the value_type’s 1st data member |
auto name_of_values_data_member_2()const; |
Returns: ConstProxy instance representing the 2nd data member of the value_type. NOTE: actual method name is the name of the value_type’s 2nd data member. |
auto name_of_values_data_member_...()const; |
Returns: ConstProxy instance representing the ...th data member of the value_type. NOTE: actual method name is the name of the value_type’s ...th data member. |
auto name_of_values_data_member_N()const; |
Returns: ConstProxy instance representing the Nth data member of the value_type. NOTE: actual method name is the name of the value_type’s Nth data member |