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sigc::is_base_and_derived< T_base, T_derived > Struct Template Reference

Compile-time determination of base-class relationship in C++ (adapted to match the syntax of boost's type_traits library). More...

List of all members.

Public Member Functions

void avoid_gcc3_warning_ ()

Static Public Attributes

static const bool value

Friends

struct internal_class

Classes

struct  big
struct  internal_class


Detailed Description

template <class T_base, class T_derived>
struct sigc::is_base_and_derived< T_base, T_derived >

Compile-time determination of base-class relationship in C++ (adapted to match the syntax of boost's type_traits library).

Use this to provide a template specialization for a set of types. For instance,

template <class T_thing, bool Tval_derives_from_something = sigc::is_base_and_derived<Something, T_thing>::value> class TheTemplate { //Standard implementation. }

//Specialization for T_things that derive from Something (Tval_derives_from_something is true) template <class t_thing>=""> class TheTemplate<T_thing, true> { T_thing thing; thing.method_that_is_in_something(); }


Member Function Documentation

template <class T_base, class T_derived>
void sigc::is_base_and_derived<T_base, T_derived>::avoid_gcc3_warning_ (  ) 
 


Friends And Related Function Documentation

template <class T_base, class T_derived>
friend struct internal_class [friend]
 


Member Data Documentation

template <class T_base, class T_derived>
const bool sigc::is_base_and_derived<T_base, T_derived>::value [static]
 

Initial value:

    sizeof(internal_class::is_base_class_(reinterpret_cast<typename type_trait<T_derived>::pointer>(0))) ==
    sizeof(char)


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