blob: b60b83947380519a5635223e6942fdf4e00da8ef (
plain)
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
|
#ifndef CORE_RANDOMIZER_HH
#define CORE_RANDOMIZER_HH 1
#pragma once
template<typename T>
class Randomizer final {
public:
explicit Randomizer(void);
explicit Randomizer(std::uint64_t seed);
virtual ~Randomizer(void) = default;
void add(const T& value);
const T& get(void);
void clear(void);
private:
std::vector<T> m_vector;
std::mt19937_64 m_twister;
std::uniform_int_distribution<std::size_t> m_dist;
};
template<typename T>
inline Randomizer<T>::Randomizer(void)
{
m_vector.clear();
m_twister.seed(std::random_device()());
m_dist = std::uniform_int_distribution<std::size_t>(0, 0);
}
template<typename T>
inline Randomizer<T>::Randomizer(std::uint64_t seed)
{
m_vector.clear();
m_twister.seed(seed);
m_dist = std::uniform_int_distribution<std::size_t>(0, 0);
}
template<typename T>
inline void Randomizer<T>::add(const T& value)
{
m_vector.push_back(value);
m_dist = std::uniform_int_distribution<std::size_t>(0, m_vector.size() - 1);
}
template<typename T>
inline const T& Randomizer<T>::get(void)
{
return m_vector.at(m_dist(m_twister));
}
template<typename T>
inline void Randomizer<T>::clear(void)
{
m_vector.clear();
m_dist = std::uniform_int_distribution<std::size_t>(0, 0);
}
#endif /* CORE_RANDOMIZER_HH */
|
