exercise_2_2::cpp20 Namespace Reference

Encapsulate solution for Exercise 2-2 (C++20). More...

Functions
template<typename Target , typename Source >
Target	polymorphic_downcast (Source *const x)
	Check the validity of a downcast.
template<typename Target , typename Source >
Target	polymorphic_downcast (Source &x)
	Check the validity of a downcast.

Detailed Description

Encapsulate solution for Exercise 2-2 (C++20).

Function Documentation

polymorphic_downcast() [1/2]

template<typename Target , typename Source >

Target exercise_2_2::cpp20::polymorphic_downcast ( Source &  x )

inline

Check the validity of a downcast.

This method asserts (in debug builds only) that the downcast was legal. This overload accepts a reference type.

Template Parameters

Target	The resulting type of the cast.
Source	The input datatype (wihtout reference). Do not specify this explicitly: it should be deduced by the compiler.

Parameters

[in]

x

An input reference type.

Returns

A dynamically casted instance from the source type.

Definition at line 57 of file c++20/exercise-2-2.hpp.

polymorphic_downcast() [2/2]

template<typename Target , typename Source >

Target exercise_2_2::cpp20::polymorphic_downcast ( Source *const  x )

inline

Check the validity of a downcast.

This method asserts (in debug builds only) that the downcast was legal. This overload accepts a pointer type.

Template Parameters

Target	The resulting type of the cast.
Source	The input datatype (wihtout pointer). Do not specify this explicitly: it should be deduced by the compiler.

Parameters

[in]

x

An input pointer type.

Returns

A dynamically casted instance from the source type.

Definition at line 37 of file c++20/exercise-2-2.hpp.