Re: Template conversion operator specialization
Am 18.05.2014 02:55, schrieb TS:
I have some problem regarding template conversion operator on MSVC.
class Test {
public:
template <typename T>
operator T() const;
operator int() {
return 4;
}
};
template<>
Test::operator int() const {
return 3;
}
The above code compiles fine with GCC but is rejected by MSVC:
error C2910: 'Test::operator int' : cannot be explicitly specialized
This seems odd and looks like a compiler error to me. Interestingly the following variant of your code is accepted by MSVC:
struct Test2 {
template <class T> T f() const;
int f() { return 4; }
};
template<> int Test2::f() const { return 3; }
However, I do need to keep both template and non-template version of
operator int() for a particular reason. Any ideas?
A possible workaround is to use a helper template as follows:
class Test {
template<class T>
T conv_func_impl() const;
public:
template <typename T>
operator T() const {
return conv_func_impl<T>();
}
operator int() {
return 4;
}
};
template<> int Test::conv_func_impl() const { return 3; }
HTH & Greetings from Bremen,
Daniel Kr?gler
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