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- [/
- Copyright 2007 John Maddock.
- Distributed under the Boost Software License, Version 1.0.
- (See accompanying file LICENSE_1_0.txt or copy at
- http://www.boost.org/LICENSE_1_0.txt).
- ]
- [section:is_class is_class]
- template <class T>
- struct is_class : public __tof {};
-
- __inherit If T is a (possibly cv-qualified) class type (and not a union type) then inherits from __true_type,
- otherwise inherits from __false_type.
- __std_ref 3.9.2 and 9.2.
- __header ` #include <boost/type_traits/is_class.hpp>` or ` #include <boost/type_traits.hpp>`
- __compat This trait works correctly for almost all current compilers (as of June 2015), with just a minority
- of older compilers not correctly detecting all the corner cases. You can check the macro `BOOST_TT_HAS_CONFORMING_IS_CLASS_IMPLEMENTATION`
- which is defined to 1 when the class works correctly in all cases.
- __examples
- [:Given: `class MyClass;` then:]
- [:`is_class<MyClass>` inherits from `__true_type`.]
- [:`is_class<MyClass const>::type` is the type `__true_type`.]
- [:`is_class<MyClass>::value` is an integral constant
- expression that evaluates to /true/.]
- [:`is_class<MyClass&>::value` is an integral constant
- expression that evaluates to /false/.]
- [:`is_class<MyClass*>::value` is an integral constant
- expression that evaluates to /false/.]
- [:`is_class<T>::value_type` is the type `bool`.]
- [endsect]
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