explicit invocation of a constructor template of a class template

[benben]

Say I have a class template:

template <typename T>
class myclass
{
public:

template <typename U>
myclass(void )
{
U u;
// do something with u
}
};

My question is how to construct a myclass<int> object using the
myclass<int>::myclass<float> constructor?

Or is it really a very silly question?

Regards,
Ben

 

[Alf P. Steinbach]

* benben:

Say I have a class template:

template <typename T>
class myclass
{
public:

template <typename U>
myclass(void )
{
U u;
// do something with u
}
};

My question is how to construct a myclass<int> object using the
myclass<int>::myclass<float> constructor?

Consider

class myclass
{
public:
myclass() {}
myclass( int = 0 ) {}
};

There's no way to default-construct an object of this class.

The answer to your question is the same.

Or is it really a very silly question?

No.