/usr/include/dlib/any/any_trainer.h is in libdlib-dev 18.18-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 | // Copyright (C) 2010 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_AnY_TRAINER_H_
#define DLIB_AnY_TRAINER_H_
#include "any.h"
#include "../smart_pointers.h"
#include "any_decision_function.h"
#include "any_trainer_abstract.h"
#include <vector>
namespace dlib
{
// ----------------------------------------------------------------------------------------
template <
typename sample_type_,
typename scalar_type_ = double
>
class any_trainer
{
public:
typedef sample_type_ sample_type;
typedef scalar_type_ scalar_type;
typedef default_memory_manager mem_manager_type;
typedef any_decision_function<sample_type, scalar_type> trained_function_type;
any_trainer()
{
}
any_trainer (
const any_trainer& item
)
{
if (item.data)
{
item.data->copy_to(data);
}
}
template <typename T>
any_trainer (
const T& item
)
{
typedef typename basic_type<T>::type U;
data.reset(new derived<U>(item));
}
void clear (
)
{
data.reset();
}
template <typename T>
bool contains (
) const
{
typedef typename basic_type<T>::type U;
return dynamic_cast<derived<U>*>(data.get()) != 0;
}
bool is_empty(
) const
{
return data.get() == 0;
}
trained_function_type train (
const std::vector<sample_type>& samples,
const std::vector<scalar_type>& labels
) const
{
// make sure requires clause is not broken
DLIB_ASSERT(is_empty() == false,
"\t trained_function_type any_trainer::train()"
<< "\n\t You can't call train() on an empty any_trainer"
<< "\n\t this: " << this
);
return data->train(samples, labels);
}
template <typename T>
T& cast_to(
)
{
typedef typename basic_type<T>::type U;
derived<U>* d = dynamic_cast<derived<U>*>(data.get());
if (d == 0)
{
throw bad_any_cast();
}
return d->item;
}
template <typename T>
const T& cast_to(
) const
{
typedef typename basic_type<T>::type U;
derived<U>* d = dynamic_cast<derived<U>*>(data.get());
if (d == 0)
{
throw bad_any_cast();
}
return d->item;
}
template <typename T>
T& get(
)
{
typedef typename basic_type<T>::type U;
derived<U>* d = dynamic_cast<derived<U>*>(data.get());
if (d == 0)
{
d = new derived<U>();
data.reset(d);
}
return d->item;
}
any_trainer& operator= (
const any_trainer& item
)
{
any_trainer(item).swap(*this);
return *this;
}
void swap (
any_trainer& item
)
{
data.swap(item.data);
}
private:
struct base
{
virtual ~base() {}
virtual trained_function_type train (
const std::vector<sample_type>& samples,
const std::vector<scalar_type>& labels
) const = 0;
virtual void copy_to (
scoped_ptr<base>& dest
) const = 0;
};
template <typename T>
struct derived : public base
{
T item;
derived() {}
derived(const T& val) : item(val) {}
virtual void copy_to (
scoped_ptr<base>& dest
) const
{
dest.reset(new derived<T>(item));
}
virtual trained_function_type train (
const std::vector<sample_type>& samples,
const std::vector<scalar_type>& labels
) const
{
return item.train(samples, labels);
}
};
scoped_ptr<base> data;
};
// ----------------------------------------------------------------------------------------
template <
typename sample_type,
typename scalar_type
>
inline void swap (
any_trainer<sample_type,scalar_type>& a,
any_trainer<sample_type,scalar_type>& b
) { a.swap(b); }
// ----------------------------------------------------------------------------------------
template <typename T, typename U, typename V>
T& any_cast(any_trainer<U,V>& a) { return a.template cast_to<T>(); }
template <typename T, typename U, typename V>
const T& any_cast(const any_trainer<U,V>& a) { return a.template cast_to<T>(); }
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_AnY_TRAINER_H_
|