598bfd3f
 Hu Chunming
提交_GLIBCXX_USE_CX...
|
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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
//-----------------------------------------------------------------------------
// boost blank.hpp header file
// See http://www.boost.org for updates, documentation, and revision history.
//-----------------------------------------------------------------------------
//
// Copyright (c) 2003
// Eric Friedman
//
// 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)
#ifndef BOOST_BLANK_HPP
#define BOOST_BLANK_HPP
#include "boost/blank_fwd.hpp"
#if !defined(BOOST_NO_IOSTREAM)
#include <iosfwd> // for std::basic_ostream forward declare
#include "boost/detail/templated_streams.hpp"
#endif // BOOST_NO_IOSTREAM
#include "boost/type_traits/integral_constant.hpp"
#include "boost/type_traits/is_empty.hpp"
#include "boost/type_traits/is_pod.hpp"
#include "boost/type_traits/is_stateless.hpp"
namespace boost {
struct blank
{
};
// type traits specializations
//
template <>
struct is_pod< blank >
: boost::true_type
{
};
template <>
struct is_empty< blank >
: boost::true_type
{
};
template <>
struct is_stateless< blank >
: boost::true_type
{
};
// relational operators
//
inline bool operator==(const blank&, const blank&)
{
return true;
}
inline bool operator<=(const blank&, const blank&)
{
return true;
}
inline bool operator>=(const blank&, const blank&)
{
return true;
}
inline bool operator!=(const blank&, const blank&)
{
return false;
}
inline bool operator<(const blank&, const blank&)
{
return false;
}
inline bool operator>(const blank&, const blank&)
{
return false;
}
// streaming support
//
#if !defined(BOOST_NO_IOSTREAM)
BOOST_TEMPLATED_STREAM_TEMPLATE(E,T)
inline BOOST_TEMPLATED_STREAM(ostream, E,T)& operator<<(
BOOST_TEMPLATED_STREAM(ostream, E,T)& out
, const blank&
)
{
// (output nothing)
return out;
}
#endif // BOOST_NO_IOSTREAM
} // namespace boost
#endif // BOOST_BLANK_HPP
|
