精通Template技术的高手请进！我写的摸板的摸板出错误！
//T55
#ifndef STACK_H_55
#define STACK_H_55
#include <deque>
#include <stdexcept>
#include <memory>
template <typename T,
template <typename ELEM,
typename=std::allocator <ELEM> > class CONT=std::deque>
class Stack
{
private:
CONT <T> elems; //元素；
public:
void push(T const &);
void pop();
T top()const;
bool empty() const
{
return elems.empty();
}
};
template <typename T,
template <typename
typename > class CONT>
void Stack <T,CONT> ::push(T const & elem)
{
elems.push_back(elem);
}
template <typename T,
template <typename
typename> class CONT>
void Stack <T,CONT> ::pop()
{
if(elems.empty())
{
throw std::out_of_range( "Stack <> ::pop(): empty stack! ");
}
elems.pop_back();
}
template <typename T,
template <typename
typename> class CONT>
T Stack <T,CONT> ::top()const
{
if(elems.empty())
{
throw std::out_of_range( "Stack <> ::top: empty stack! ");
}
return elems.back();
}
#endif;
#include <iostream>
#include <string>
#include <cstdlib>
#include <vector>
#include "T55.h "
int main()
{
try{
Stack <int> intStack;
intStack.push(42);
intStack.push(7); // intStack.push(15);
std::cout < <intStack.top() < <std::endl;
}catch(std::exception const & ex){
std::cerr < < "EXception: " < <ex.what() < <std::endl;
}
}
VC++2005:
出错提示如下：
T55.cpp
e:\c++分支\template\0530\0530\t55.h(31) : error C3855: 'Stack <T,CONT> ': template parameter 'CONT ' is incompatible with the declaration
e:\c++分支\template\0530\0530\t55.h(42) : error C3855: 'Stack <T,CONT> ': template parameter 'CONT ' is incompatible with the declaration
e:\c++分支\template\0530\0530\t55.h(53) : error C3855: 'Stack <T,CONT> ': template parameter 'CONT ' is incompatible with the declaration
e:\c++分支\template\0530\0530\t55.cpp(11) : error C2264: 'Stack <T> ::push ' : error in function definition or declaration; function not called
with
[
T=int
]
e:\c++分支\template\0530\0530\t55.cpp(12) : error C2264: 'Stack <T> ::push ' : error in function definition or declaration; function not called
with
[
T=int
]
e:\c++分支\template\0530\0530\t55.cpp(13) : error C2264: 'Stack <T> ::top ' : error in function definition or declaration; function not called
with
[
T=int
]
[解决办法]
建议，模板参数用
template <typename T,
class CONT=std::deque <T> >
class Stack{
CONT elems;
....
这样解决了问题，也增加了灵活性
[解决办法]
template <typename T,
template <typename
typename > class CONT>
你两个typename间没加 ", "加了就通过了。
template <typename T,template <typename,typename > class CONT>
