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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.

"Spark" <> 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 {
> public:
> void setValue(T s){
> cout << s << endl;
> }
> };
>
> 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.

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

On Feb 21, 10:40 am, "Spark" <liang.sp...@gmail.com> wrote:
> 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.

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;
}
}

On 2ÔÂ22ÈÕ, ÉÏÎç6ʱ21·Ö, "Daniel Pitts" <googlegrou....@coloraura.com> wrote:
> On Feb 21, 10:40 am, "Spark" <liang.sp...@gmail.com> wrote:
>
>
>
> > 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.
>
> 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;
> }
>
> }

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