Linux C/C++ 模板：类模板成员特化

#include <iostream>
#include <cstring>
#include <vector>
#include <algorithm>
using namespace std;

//主模板
template <typename T>
class Heap
{
public:
void push(const T& val);
T pop();
bool empty() const { return m_vec.empty(); }

private:
vector<T> m_vec;
};

template <typename T>
void Heap<T>::push(const T& val)
{
m_vec.push_back(val);
push_heap(m_vec.begin(), m_vec.end());
}

template <typename T>
T Heap<T>::pop()
{
pop_heap(m_vec.begin(), m_vec.end());

T tmp = m_vec.back();

m_vec.pop_back();

return tmp;
}

//
bool strLess(const char* a, const char* b)
{
return strcmp(a, b) < 0;
}

//类模板成员特化
template <>
void Heap<const char*>::push(const char* const & val) //参数格式必须与原型一致
{
m_vec.push_back(val);
push_heap(m_vec.begin(), m_vec.end(), strLess);

}

//类模板成员特化
template <>
const char* Heap<const char*>::pop()
{
pop_heap(m_vec.begin(), m_vec.end());

const char* tmp = m_vec.back();

m_vec.pop_back();

return tmp;

}

//
int main(int argc, char*argv[])
{
//
Heap<int> h1;

h1.push(1);
h1.push(3);
h1.push(2);

cout<<"is empty: "<<h1.empty()<<endl;
cout<<h1.pop()<<endl;
cout<<h1.pop()<<endl;
cout<<h1.pop()<<endl;
cout<<"is empty: "<<h1.empty()<<endl<<endl;

//
Heap<const char*> h2;

h2.push("aa");
h2.push("cc");
h2.push("bb");

cout<<"is empty: "<<h2.empty()<<endl;
cout<<h2.pop()<<endl;
cout<<h2.pop()<<endl;
cout<<h2.pop()<<endl;
cout<<"is empty: "<<h2.empty()<<endl;

return 0;
}