template compiling issues

[joeGrammar]

code:


template <class T>
class RangeValidator : public FieldValidator
{
public:
RangeValidator( RECTYPE eRecType, int iErrNo, PValMsgArgsCB pVMCBINI, const char *szName, const char *pData, T, T );
virtual LOGIC IsValid();

private:
--> T Low;
--> T High;
};

template <class T>
RangeValidator<T>::RangeValidator(
RECTYPE eRecType, int iErrNo, PValMsgArgsCB pVMCBINI, const char *szName, const char *pDataIni, T LowIni, T HighIni ) :
FieldValidator( eRecType, iErrNo, pVMCBINI, szName )
{
--> pData = pDataIni;
--> Low = LowIni;
--> High = HighIni;
}

template <class T>
LOGIC RangeValidator<T>::IsValid()
{
error --> return ( Low <= pData && pData <= High ) ? PASS : FAIL;
}

c:\windows\desktop\newbatch\inc\zdataval.hpp(161) : error C2667: '<=' : none of 2 overload have a best conversion


I understand what's going on here, I need you guys to tell me if you think this error should be occuring. One parameter is a template var, the other is a const char. Isn't it possible to compare a template var?

 

[Cagliostro]

some of templates are incompatible.
for example
template<class T> class xublic T
{
a(){return T.cc();}
};//everithing is good till you try to create a template of class what doesn't support cc() John Fill

ivfmd@mail.md

 

[joeGrammar]

ok, but shouldn't it still compile?

 

[Cagliostro]

templates is always created at compile time. If they are not compatible they not compille. John Fill

ivfmd@mail.md