Enables the SFINAE concept. More...
#include <enable_if.hpp>
Inheritance diagram for ecl::enable_if< Condition, T >:
Additional Inherited Members | |
 Public Types inherited from ecl::enable_if_c< Condition::value, void > | |
| typedef void | type |
Detailed Description
template<class Condition, class T = void>
struct ecl::enable_if< Condition, T >
Enables the SFINAE concept.
This is the same as the boost and future C++0x implementations. Use this to do things like helping to instantiate families of specialisations. For example:
#include <ecl/type_traits/fundamental_types.hpp> // for is_float
// This will instantiate if it is anything except float or double.
template <typename T, typename Enable = void>
class TestObject {
public:
bool isFloatSpecialisation() { return false; }
};
// This specialisation will instantiate it T is float or double.
template <typename T>
class TestObject< T, typename enable_if< is_float<T> >::type > {
public:
bool isFloatSpecialisation() { return true; }
};
Definition at line 71 of file enable_if.hpp.
The documentation for this struct was generated from the following file: