A template question.

Thread view:

Spark - 21 Feb 2007 18:40 GMT

I have a question about type parameters. Class Log is concrete one I
expected.

Log l;
l.setValue(10);
l.setValue("value");
l.setValue(10.0);

I tried to define this class as following. but got compile time error.

template<typename T>
class Log {
public:
    void setValue(T s){
        cout << s << endl;
    }
};

Does anyone point me out?

Thanks in advance.

Reply to this Message

Ian Shef - 21 Feb 2007 19:08 GMT

"Spark" <liang.spark@gmail.com> wrote in news:1172083224.505757.295270
@p10g2000cwp.googlegroups.com:

> I have a question about type parameters. Class Log is concrete one I
> expected.

<snip>

> template<typename T>
> class Log {
[quoted text clipped - 5 lines]
>
> Does anyone point me out?

<snip>

You will get a much better response in a C++ newsgroup than in this one which
is for Java.

Signature

Ian Shef 805/F6 * These are my personal opinions
Raytheon Company * and not those of my employer.
PO Box 11337 *
Tucson, AZ 85734-1337 *

Reply to this Message

Daniel Pitts - 21 Feb 2007 22:21 GMT

> I have a question about type parameters. Class Log is concrete one I
> expected.
[quoted text clipped - 18 lines]
>
> Thanks in advance.

Even though you should have posted in the c++ newsgroup, I'll help
you..

You have defined a class Log, which is parameterized, what you wanted
to do was to create a function setValue which is parameterize.

class Log {
public:
template<typename T>
void setValue(T s) {
cout << s << endl;
}
}

Reply to this Message

Spark - 22 Feb 2007 08:47 GMT

> > I have a question about type parameters. Class Log is concrete one I
> > expected.
[quoted text clipped - 33 lines]
>
> }

I'm sorry,

I use google group. I really want to post to c++ newgroups. but
something wrong with my configuration, lead to wrong place.

anyway, thank you for Daniel's reply. It's helpful for me.

Spark

Reply to this Message

A template question.

Free Magazines