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
|
#include <iostream>
template<typename T, typename D>
class PairOfOptionals
{
T* first;
D* second;
void copyFrom(const PairOfOptionals<T, D>& other);
void free();
public:
PairOfOptionals();
PairOfOptionals(const T& leftData, const D& rightData);
PairOfOptionals(const PairOfOptionals<T,D>& other);
PairOfOptionals<T, D>& operator=(const PairOfOptionals<T,D>& other);
~PairOfOptionals();
void setFirst(const T& firstData);
void setSecond(const D& firstData);
const T& getFirst() const;
const D& getSecond() const;
void removeFirst();
void removeSecond();
bool containsFirst() const;
bool containsSecond() const;
bool operator==(const PairOfOptionals<T, D>& rhs) const;
bool operator!=(const PairOfOptionals<T, D>& rhs) const;
};
template <typename T, typename D>
PairOfOptionals<T, D>::PairOfOptionals() : first(nullptr), second(nullptr){}
template<typename T, typename D>
PairOfOptionals<T, D>::PairOfOptionals(const T& leftData, const D& rightData) : first(nullptr), second(nullptr)
{
setFirst(leftData);
setSecond(rightData);
}
template<typename T, typename D>
PairOfOptionals<T, D>::PairOfOptionals(const PairOfOptionals<T, D>& other)
{
copyFrom(other);
}
template<typename T, typename D>
PairOfOptionals<T, D>& PairOfOptionals<T, D>::operator=(const PairOfOptionals<T, D>& other)
{
if (this != &other)
{
free();
copyFrom(other);
}
return *this;
}
template<typename T, typename D>
PairOfOptionals<T, D>::~PairOfOptionals()
{
free();
}
template<typename T, typename D>
void PairOfOptionals<T, D>::setFirst(const T& firstData)
{
delete first;
first = new T(firstData);
}
template<typename T, typename D>
void PairOfOptionals<T, D>::setSecond(const D& secondData)
{
delete second;
second = new D(secondData);
}
template<typename T, typename D>
const T& PairOfOptionals<T, D>::getFirst() const
{
if (!containsFirst())
throw std::logic_error("No first element");
return *first;
}
template<typename T, typename D>
const D& PairOfOptionals<T, D>::getSecond() const
{
if (!containsSecond())
throw std::logic_error("No second element");
return *second;
}
template<typename T, typename D>
void PairOfOptionals<T, D>::removeFirst()
{
delete first;
first = nullptr;
}
template<typename T, typename D>
void PairOfOptionals<T, D>::removeSecond()
{
delete second;
second = nullptr;
}
template<typename T, typename D>
bool PairOfOptionals<T, D>::containsFirst() const
{
return first != nullptr;
}
template<typename T, typename D>
bool PairOfOptionals<T, D>::containsSecond() const
{
return second != nullptr;
}
template<typename T, typename D>
void PairOfOptionals<T, D>::copyFrom(const PairOfOptionals<T, D>& other)
{
first = new T(other.first);
second = new D(other.second);
}
template<typename T, typename D>
void PairOfOptionals<T, D>::free()
{
delete first, second;
}
template<typename S>
bool compareValues(const S* ptr1, const S* ptr2)
{
return (ptr1 == nullptr && ptr2 == nullptr) || (ptr1 != nullptr && ptr2 != nullptr && *ptr1 == *ptr2);
}
template<typename T, typename D>
bool PairOfOptionals<T, D>::operator==(const PairOfOptionals<T, D>& rhs) const
{
return compareValues<T>(first, rhs.first) && compareValues<D>(second, rhs.second);
}
template<typename T, typename D>
bool PairOfOptionals<T, D>::operator!=(const PairOfOptionals<T, D>& rhs) const
{
return !(*this == rhs);
}
|
