1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
// Boost.TypeErasure library
//
// Copyright 2011 Steven Watanabe
//
// 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)
//
// $Id$
#include <boost/type_erasure/builtin.hpp>
#include <boost/type_erasure/operators.hpp>
#include <boost/mpl/vector.hpp>
namespace mpl = boost::mpl;
using namespace boost::type_erasure;
//[compose1
/*`
Multiple concepts can be composed using an MPL sequence.
*/
template<class T = _self>
struct arithmetic :
mpl::vector<
copy_constructible<T>,
addable<T>,
subtractable<T>,
multipliable<T>,
dividable<T>,
equality_comparable<T>,
less_than_comparable<T>
>
{};
/*`
Now, `arithmetic` is a concept that can be used just
like any of the base concepts.
*/
//]
//[compose
//` (For the source of the examples in this section see
//` [@boost:/libs/type_erasure/example/compose.cpp compose.cpp])
//` [compose1]
//]
|
