ion::base::IsBaseOf< Base, Derived > Struct Template Reference

IsBaseOf is similar to std::is_base_of. More...

#include "type_structs.h"

Collaboration diagram for ion::base::IsBaseOf< Base, Derived >:

Classes
struct	Helper
	Because the Derived type-cast operator is non-const, it is preferred over the Base operator when calling Test() below. More...

Static Public Member Functions
template<typename T >
static char	Test (Derived *, T)
	Overloaded function that chooses the Derived version iff Derived is actually derived from Base. More...
static int	Test (Base *, int)

Static Public Attributes
static const bool	value = sizeof(Test(Helper(), 0)) == 1

Detailed Description

template<typename Base, typename Derived>
struct ion::base::IsBaseOf< Base, Derived >

IsBaseOf is similar to std::is_base_of.

IsBaseOf<Base, Derived>::value is true iff Base and Derived are different types and Base is a base class of Derived.

Definition at line 45 of file type_structs.h.

Member Function Documentation

template<typename Base , typename Derived >

template<typename T >

static char ion::base::IsBaseOf< Base, Derived >::Test ( Derived *  , T    )

static

Overloaded function that chooses the Derived version iff Derived is actually derived from Base.

The size of the return type is used to tell which version is selected.

template<typename Base , typename Derived >

static int ion::base::IsBaseOf< Base, Derived >::Test ( Base *  , int    )

static

Member Data Documentation

template<typename Base , typename Derived >

const bool ion::base::IsBaseOf< Base, Derived >::value = sizeof(Test(Helper(), 0)) == 1

static

Definition at line 57 of file type_structs.h.

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The documentation for this struct was generated from the following file:

• base/type_structs.h