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Leon Wu
Guest
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 Posted: Mon Nov 13, 2006 10:10 am Post subject: question about Partial Template Specialization |
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I have some code like following:
template<class T>
class A
{
public:
A(T& t) : m_b(t){};
void Func()
{
m_b.DoSome();
};
private:
B<t> m_b;
};
---------------------------------------
template<class T>
class B
{
public:
void DoSome() {
cout << "type t";
};
private:
T &t;
};
template<>
void B<int>::DoSome()
{
cout << "type int";
}
---------------------------------------
main()
{
A<int> a;
a.Func();
}
the output is "type t" instead of "type int", why?! any help is
appericiated. |
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Gianni Mariani
Guest
|
| Posted: Mon Nov 13, 2006 10:10 am Post subject: Re: question about Partial Template Specialization |
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|
Leon Wu wrote:
| Quote: | I have some code like following:
template<class T
class A
{
public:
A(T& t) : m_b(t){};
void Func()
{
m_b.DoSome();
};
private:
B<t> m_b;
};
---------------------------------------
template<class T
class B
{
public:
void DoSome() {
cout << "type t";
};
private:
T &t;
};
template
void B<int>::DoSome()
{
cout << "type int";
}
---------------------------------------
main()
{
A<int> a;
a.Func();
}
the output is "type t" instead of "type int", why?! any help is
appericiated.
|
Please post a complete compilable program...
After fixing a number of compile errors you get this -
this says "type int"
#include <iostream>
template<class T>
class B;
template<class T>
class A
{
public:
A() {};
A(T& t) : m_b(t){};
void Func()
{
m_b.DoSome();
};
private:
B<T> m_b;
};
//---------------------------------------
template<class T>
class B
{
public:
void DoSome() {
std::cout << "type t";
};
private:
T &t;
};
template<>
void B<int>::DoSome()
{
std::cout << "type int";
}
//---------------------------------------
int main()
{
A<int> a;
a.Func();
} |
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