回答編集履歴
1
ｍ
test
CHANGED
|
@@ -1,5 +1,89 @@
|
|
|
1
|
-
https://wandbox.org/permlink/uVyNmg1EKLUZXExx
|
|
1
|
+
[https://wandbox.org/permlink/uVyNmg1EKLUZXExx](https://wandbox.org/permlink/uVyNmg1EKLUZXExx)
|
|
2
2
|
|
|
3
3
|
|
|
4
4
|
|
|
5
5
|
継承のところで自身のクラスのtemplate実引数を書き忘れています。
|
|
6
|
+
|
|
7
|
+
|
|
8
|
+
|
|
9
|
+
```cpp
|
|
10
|
+
|
|
11
|
+
#include <iostream>
|
|
12
|
+
|
|
13
|
+
// 親クラス
|
|
14
|
+
|
|
15
|
+
template <class Child, class SomeType>
|
|
16
|
+
|
|
17
|
+
struct Base
|
|
18
|
+
|
|
19
|
+
{
|
|
20
|
+
|
|
21
|
+
void interface()
|
|
22
|
+
|
|
23
|
+
{
|
|
24
|
+
|
|
25
|
+
static_cast<Child *>(this)->implementation();
|
|
26
|
+
|
|
27
|
+
}
|
|
28
|
+
|
|
29
|
+
|
|
30
|
+
|
|
31
|
+
protected:
|
|
32
|
+
|
|
33
|
+
SomeType hoge;
|
|
34
|
+
|
|
35
|
+
};
|
|
36
|
+
|
|
37
|
+
|
|
38
|
+
|
|
39
|
+
// 子クラス1
|
|
40
|
+
|
|
41
|
+
template <class SomeType>
|
|
42
|
+
|
|
43
|
+
struct Derived1 : Base<Derived1<SomeType>, SomeType> // Derived1<SomeType>に
|
|
44
|
+
|
|
45
|
+
{
|
|
46
|
+
|
|
47
|
+
void implementation()
|
|
48
|
+
|
|
49
|
+
{
|
|
50
|
+
|
|
51
|
+
std::cout << "Derived1" << std::endl;
|
|
52
|
+
|
|
53
|
+
}
|
|
54
|
+
|
|
55
|
+
};
|
|
56
|
+
|
|
57
|
+
|
|
58
|
+
|
|
59
|
+
// 子クラス2
|
|
60
|
+
|
|
61
|
+
template <class SomeType>
|
|
62
|
+
|
|
63
|
+
struct Derived2 : Base<Derived2<SomeType>, SomeType> // Derived2<SomeType>に
|
|
64
|
+
|
|
65
|
+
{
|
|
66
|
+
|
|
67
|
+
void implementation()
|
|
68
|
+
|
|
69
|
+
{
|
|
70
|
+
|
|
71
|
+
std::cout << "Derived2" << std::endl;
|
|
72
|
+
|
|
73
|
+
}
|
|
74
|
+
|
|
75
|
+
};
|
|
76
|
+
|
|
77
|
+
|
|
78
|
+
|
|
79
|
+
int main()
|
|
80
|
+
|
|
81
|
+
{
|
|
82
|
+
|
|
83
|
+
Derived1<int>().interface();
|
|
84
|
+
|
|
85
|
+
Derived2<int>().interface();
|
|
86
|
+
|
|
87
|
+
}
|
|
88
|
+
|
|
89
|
+
```
|