类模板的全特化和偏特化

#include <stdio.h>
#include <iostream>
template<typename T1,typename T2>
class A {
public:
	A(T1 self_str1,T2 self_str2) {
		printf("类模板：\n");
		std::cout << self_str1 << std::endl;
		std::cout << self_str2 << std::endl;
		printf("\n");
	}
	~A() {
		std::cout << "~A" << std::endl;
	}
};

//函数模板的偏特化
template<typename T2>
class A<double,T2> {
public:
	A(double t1,T2 t2) {
		printf("类模板偏特化：\n");
		printf("double:%f\n", t1);
		std::cout << "T2："<<t2 << std::endl;
		printf("\n");
	}
	~A() {
		std::cout << "~A:double" << std::endl;
	}
};
template<>
class A<double, double> {
public:
	A(double t1, double t2) {
		printf("类模板全特化：\n");
		printf("double:%f   %f\n", t1,t2);
		printf("\n");
	}
	~A() {
		std::cout << "~A:double" << std::endl;
	}
};
int main() {
	A<int,int> a(5,6);  //使用类模板
	A<double,char *> b(5.0,"hello world");//使用偏特化
	A<double,double> c(0.4,0.5); //使用全特化
	return 0;
}