How to get the data type from the template argument?

[shuisheng]

Dear All,

I have template classes as following

template<class T>
struct A
{
typedef T DataType;
DataType valueA;
};

template<class T>
struct B
{
T:ataType valueB;
}

When compiling, it said that T:ataType is not a type. Any method I
can get the data type from the template argument?

I appreciate your help.

Best wishes!

Shuisheng

 

[Andre Kostur]

Dear All,

I have template classes as following

template<class T>
struct A
{
typedef T DataType;
DataType valueA;
};

template<class T>
struct B
{
T:ataType valueB;
}

When compiling, it said that T:ataType is not a type. Any method I
can get the data type from the template argument?

I appreciate your help.

That's what's called a dependant type. Use the 'typename' keyword:

template<class T>
struct B
{
typename T:ataType valueB;
}