Calling a Template member function without specifying a type

[ogtindeed]

Hi all,

I need some help. I am trying to instantiate a Template and call a
member function, but have not been able -

Now this is what I am trying to do:

foo.h
=========

template<typename foo1>
class myClass
{
public:
void display(foo1);
};


template <typename foo1>
void myClass<foo1>::display(foo1 outdata)
{
cout<<outdata<<"\n";
}

foo.cpp
========

int main(int argc, char* argv[])
{
myClass mc; // compiler complains here-Is there anyway around
this?
myClass<char> mc; //compiler accepts this-But I don't want this?
return (0);
}


Many thanks for the help. I appreciate -

 

[Jonathan Turkanis]

Hi all,

I need some help. I am trying to instantiate a Template and call a
member function, but have not been able -

Now this is what I am trying to do:

foo.h
=========

template<typename foo1>
class myClass
{
public:
void display(foo1);
};


template <typename foo1>
void myClass<foo1>::display(foo1 outdata)
{
cout<<outdata<<"\n";
}

foo.cpp
========

int main(int argc, char* argv[])
{
myClass mc; // compiler complains here-Is there anyway around
this?

Nope. Class template arguments are never deduced. Even if they were,
you haven't given the compiler any clues as to what the template
arguments should be. What are you trying to achieve?

Jonathan

 

[tom_usenet]

Hi all,

I need some help. I am trying to instantiate a Template and call a
member function, but have not been able -

Now this is what I am trying to do:

foo.h
=========

You can default template parameters:

class myClass
{
public:
void display(foo1);
};

int main(int argc, char* argv[])
{
myClass mc; // compiler complains here-Is there anyway around
this?
myClass<char> mc; //compiler accepts this-But I don't want this?
return (0);
}

I can only assume you want defaults. Or perhaps you just need a
non-template? Or a member template? More detail is required...

Tom

C++ FAQ: http://www.parashift.com/c++-faq-lite/
C FAQ: http://www.eskimo.com/~scs/C-faq/top.html

 

[Chris \( Val \)]

| On 10 Feb 2004 02:03:29 -0800, (e-mail address removed) (ogtindeed) wrote:

[snip]

Hi Tom.

| >I need some help. I am trying to instantiate a Template and call a
| >member function, but have not been able -
| >
| >Now this is what I am trying to do:
| >
| >foo.h
| >=========
| >
|
| You can default template parameters:
|
| template<typename foo1 = char>

But that would require that you declare the following as such:

myClass<> mc;

| > myClass mc; // compiler complains here-Is
// there anyway around this?

[snip]

Which doesn't really do what the OP wanted.

I think you're right though, the OP really
needs to be more specific in what s/he requires.

Cheers.
Chris Val