几种特殊的模板偏特化.
0.基本的偏特化(所有模板参数都特化)1
template <typename T1,typename T2>
2
class A {};
3
4template <>
5class A <int, int>
6{};
7
template <typename T1,typename T2>2
class A {};
3
4
template <>5
class A <int, int>6
{};7
1.部分模板参数特化
1template <typename R, typename Arg1>
2class A
3{};
4
5template <typename Arg1>
6class A <void, Arg1>
7{};
8
9void main()
10{
11
A <int, int> a1;
12 A <void, int> a2;
13
}
2. 一种特殊的特化template <typename R, typename Arg1>2
class A3
{};4
5
template <typename Arg1>6
class A <void, Arg1>7
{};8
9
void main()10
{11
A <int, int> a1;12
A <void, int> a2;13
} 1#include <stdio.h>
2
3template<typename Signature> class function;
4
5template<typename R >
6class function<R (void)>
7{
8 public:
9
function(){
10 printf("function<R (void)>\n");
11
}
12};
13
14template<typename R ,
15 typename T0>
16class function<R ( T0)>
17{
18 public:
19 function(){
20 printf("function<R ( T0)>\n");
21 }
22};
23
24 void main()
25 {
26 function <int ()> f0;
27 function <int (int)> f1;
28 }
29
30
#include <stdio.h>2
3
template<typename Signature> class function;4
5
template<typename R >6
class function<R (void)>7
{8
public:9
function(){
function()10
printf("function<R (void)>\n");11
}12
};13
14
template<typename R ,15
typename T0>16
class function<R ( T0)>17
{18
public:19
function(){20
printf("function<R ( T0)>\n");21
}22
};23
24
void main()25
{26
function <int ()> f0;27
function <int (int)> f1;28
}29
30