Brian Silverman | 4a2409e | 2018-08-04 23:24:02 -0700 | [diff] [blame^] | 1 | [/ |
| 2 | Copyright 2007 John Maddock. |
| 3 | Distributed under the Boost Software License, Version 1.0. |
| 4 | (See accompanying file LICENSE_1_0.txt or copy at |
| 5 | http://www.boost.org/LICENSE_1_0.txt). |
| 6 | ] |
| 7 | |
| 8 | [section:is_scalar is_scalar] |
| 9 | template <class T> |
| 10 | struct is_scalar : public __tof {}; |
| 11 | |
| 12 | __inherit If T is a (possibly cv-qualified) scalar type then inherits from |
| 13 | __true_type, otherwise inherits from __false_type. Scalar types include |
| 14 | integral, floating point, enumeration, pointer, and pointer-to-member types. |
| 15 | |
| 16 | __std_ref 3.9p10. |
| 17 | |
| 18 | __header ` #include <boost/type_traits/is_scalar.hpp>` or ` #include <boost/type_traits.hpp>` |
| 19 | |
| 20 | [all_compilers] |
| 21 | |
| 22 | __examples |
| 23 | |
| 24 | [:`is_scalar<int*>` inherits from `__true_type`.] |
| 25 | |
| 26 | [:`is_scalar<int>::type` is the type `__true_type`.] |
| 27 | |
| 28 | [:`is_scalar<double>::value` is an integral constant |
| 29 | expression that evaluates to /true/.] |
| 30 | |
| 31 | [:`is_scalar<int (*)(long)>::value` is an integral constant |
| 32 | expression that evaluates to /true/.] |
| 33 | |
| 34 | [:`is_scalar<int (MyClass::*)(long)>::value` is an integral constant |
| 35 | expression that evaluates to /true/.] |
| 36 | |
| 37 | [:`is_scalar<int (MyClass::*)>::value` is an integral constant |
| 38 | expression that evaluates to /true/.] |
| 39 | |
| 40 | [:`is_scalar<T>::value_type` is the type `bool`.] |
| 41 | |
| 42 | [endsect] |
| 43 | |