Template in Template Problem

[easy]

The following is a much simplified version of some code that is
refusing to compile. Is there anything technically wrong with the
code?
class ClassWithTemplateFunction
{
public:
template<class Tinline void SomeSillyFunction(T value) const
{
}
};

template <typename Tvoid TemplateFunction( ClassWithTemplateFunction
& rC, T value)
{
rC.SomeSillyFunction< T >( value );
}
int main()
{
ClassWithTemplateFunction C;

int value = 0;

TemplateFunction<int>(C, value);

return 0;
}

The error I get from the compiler is " Parse error before '>' " on the
line: rC.SomeSillyFunction< T >( value );

Any help would be appreciated.

[Rolf Magnus]

easy wrote:

The following is a much simplified version of some code that is
refusing to compile. Is there anything technically wrong with the
code?
class ClassWithTemplateFunction
{
public:
template<class Tinline void SomeSillyFunction(T value) const
{
}
};

template <typename Tvoid TemplateFunction( ClassWithTemplateFunction
& rC, T value)
{
rC.SomeSillyFunction< T >( value );
}
int main()
{
ClassWithTemplateFunction C;

int value = 0;

TemplateFunction<int>(C, value);

return 0;
}

The error I get from the compiler is " Parse error before '>' " on the
line: rC.SomeSillyFunction< T >( value );

Any help would be appreciated.

Try:

rC.template SomeSillyFunction< T >( value );

[Gavin Deane]

On 16 Feb, 16:19, "easy" <[e-mail]:

The following is a much simplified version of some code that is
refusing to compile. Is there anything technically wrong with the
code?

class ClassWithTemplateFunction
{
public:
template<class Tinline void SomeSillyFunction(T value) const
{
}

};

template <typename Tvoid TemplateFunction( ClassWithTemplateFunction
& rC, T value)
{
rC.SomeSillyFunction< T >( value );
}

int main()
{
ClassWithTemplateFunction C;

int value = 0;

TemplateFunction<int>(C, value);

return 0;

}

The error I get from the compiler is " Parse error before '>' " on the
line: rC.SomeSillyFunction< T >( value );

Any help would be appreciated.

What compiler are you using?

Using MS Visual Studio 2005 your code compiles with no errors and when
I step through in the debugger it follows the expected path. Also, the
code compiles without errors in Comeau online (can't execute it there
to see what happens).

Gavin Deane

[easy]

On Feb 16, 10:28 am, "Gavin Deane" <[e-mail]:

On 16 Feb, 16:19, "easy" <[e-mail]:

The following is a much simplified version of some code that is
refusing to compile. Is there anything technically wrong with the
code?

class ClassWithTemplateFunction
{
public:
template<class Tinline void SomeSillyFunction(T value) const
{
}

};

template <typename Tvoid TemplateFunction( ClassWithTemplateFunction
& rC, T value)
{
rC.SomeSillyFunction< T >( value );
}

int main()
{
ClassWithTemplateFunction C;

int value = 0;

TemplateFunction<int>(C, value);

return 0;

}

The error I get from the compiler is " Parse error before '>' " on the
line: rC.SomeSillyFunction< T >( value );

Any help would be appreciated.

What compiler are you using?

Using MS Visual Studio 2005 your code compiles with no errors and when
I step through in the debugger it follows the expected path. Also, the
code compiles without errors in Comeau online (can't execute it there
to see what happens).

Gavin Deane- Hide quoted text -

- Show quoted text -

compiler = gcc 3.3.5

[easy]

On Feb 16, 10:23 am, Rolf Magnus <[e-mail]:

easy wrote:

The following is a much simplified version of some code that is
refusing to compile. Is there anything technically wrong with the
code?

class ClassWithTemplateFunction
{
public:
template<class Tinline void SomeSillyFunction(T value) const
{
}
};

template <typename Tvoid TemplateFunction( ClassWithTemplateFunction
& rC, T value)
{
rC.SomeSillyFunction< T >( value );
}

int main()
{
ClassWithTemplateFunction C;

int value = 0;

TemplateFunction<int>(C, value);

return 0;
}

The error I get from the compiler is " Parse error before '>' " on the
line: rC.SomeSillyFunction< T >( value );

Any help would be appreciated.

Try:

rC.template SomeSillyFunction< T >( value );- Hide quoted text -

- Show quoted text -

I am unfamilliar with inserting the operator "template" in the
function call. I will try it.

[easy]

On Feb 16, 10:23 am, Rolf Magnus <[e-mail]:

easy wrote:

The following is a much simplified version of some code that is
refusing to compile. Is there anything technically wrong with the
code?

class ClassWithTemplateFunction
{
public:
template<class Tinline void SomeSillyFunction(T value) const
{
}
};

template <typename Tvoid TemplateFunction( ClassWithTemplateFunction
& rC, T value)
{
rC.SomeSillyFunction< T >( value );
}

int main()
{
ClassWithTemplateFunction C;

int value = 0;

TemplateFunction<int>(C, value);

return 0;
}

The error I get from the compiler is " Parse error before '>' " on the
line: rC.SomeSillyFunction< T >( value );

Any help would be appreciated.

Try:

rC.template SomeSillyFunction< T >( value );- Hide quoted text -

- Show quoted text -

rC.template SomeSillyFunction< T >( value ); compiles. I will have to
study more the keyword "template".

[Fei Liu]

Rolf Magnus wrote:

easy wrote:

>The following is a much simplified version of some code that is
refusing to compile. Is there anything technically wrong with the
code?
class ClassWithTemplateFunction
{
public:
template<class Tinline void SomeSillyFunction(T value) const
{
}
};

template <typename Tvoid TemplateFunction( ClassWithTemplateFunction
& rC, T value)
{
rC.SomeSillyFunction< T >( value );
}
int main()
{
ClassWithTemplateFunction C;

int value = 0;

TemplateFunction<int>(C, value);

return 0;
}

The error I get from the compiler is " Parse error before '>' " on the
line: rC.SomeSillyFunction< T >( value );

Any help would be appreciated.

Try:

rC.template SomeSillyFunction< T >( value );

My fix is: rC.SomeSillyFunction( value );
This way the compiler is left to figure out how to instantiate the
template. Your fix is rather confusing? Why is adding 'template' here a
resolution? Can you make an analogy as an explanation?

[Alf P. Steinbach]

* Fei Liu:

Rolf Magnus wrote:

>>
Try:

rC.template SomeSillyFunction< T >( value );

My fix is: rC.SomeSillyFunction( value );
This way the compiler is left to figure out how to instantiate the
template. Your fix is rather confusing? Why is adding 'template' here a
resolution? Can you make an analogy as an explanation?

Using the 'template' keyword is a more general fix, because it lets you
choose the template parameter(s) independent of the argument's type(s).
--
A: Because it messes up the order in which people normally read text.
Q: Why is it such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

[red floyd]

Fei Liu wrote:

Rolf Magnus wrote:

>easy wrote:

>Try:

rC.template SomeSillyFunction< T >( value );

My fix is: rC.SomeSillyFunction( value );
This way the compiler is left to figure out how to instantiate the
template. Your fix is rather confusing? Why is adding 'template' here a
resolution? Can you make an analogy as an explanation?

I thought template in this context was a FAQ, kind of like typedef
typename xxx. Apparently not.

[easy]

On Feb 16, 12:21 pm, Fei Liu <[e-mail]:

Rolf Magnus wrote:

easy wrote:

The following is a much simplified version of some code that is
refusing to compile. Is there anything technically wrong with the
code?

class ClassWithTemplateFunction
{
public:
template<class Tinline void SomeSillyFunction(T value) const
{
}
};

template <typename Tvoid TemplateFunction( ClassWithTemplateFunction
& rC, T value)
{
rC.SomeSillyFunction< T >( value );
}

int main()
{
ClassWithTemplateFunction C;

int value = 0;

TemplateFunction<int>(C, value);

return 0;
}

The error I get from the compiler is " Parse error before '>' " on the
line: rC.SomeSillyFunction< T >( value );

Any help would be appreciated.

Try:

rC.template SomeSillyFunction< T >( value );

My fix is: rC.SomeSillyFunction( value );
This way the compiler is left to figure out how to instantiate the
template. Your fix is rather confusing? Why is adding 'template' here a
resolution? Can you make an analogy as an explanation?- Hide quoted text -

- Show quoted text -

Once I knew what to look for I found this discussion. Very helpful.
http://groups.google.com/group/comp....ff203f27c5bfb0