Re: Specialising template member functions with templatized parameters - legal?
Karthick ha scritto:
That said, I have tried the following:
Google search for "error C2910" gives the following link:
http://msdn2.microsoft.com/en-us/library/cx7k7hcf.aspx
Among other things, the site says that the "template <>" should be
dropped during specialisation. But trying out:
// >>> Specialised implementation of to
void B::to<0>(othersize<0>::type){ }
// <<<
doesn't work either ("error C2768: 'B::to' : illegal use of explicit
template arguments")
Be careful. That knowledge base article doesn't exactly says what you
think it says. Here's the relevant part, for reference:
----
// C2910c.cpp
// compile with: /c
template <class T> class A {
void f();
};
template <> class A<int> {
void f();
};
template <> void A<int>::f() {} // C2910
// try the following line instead
// void A<int>::f(){} // OK
----
The "template<>" must not be put before "void A<int>::f() {}" because
that's *not* a specialization! It can't be a specialization because "f"
is not a template. "A" is the (class) template and can be specialized.
When "A" is specialized, A<int>::f is declared to be a regular member
function, so the specialization syntax is inappropriate while providing
the definition of A<int>::f.
HTH,
Ganesh
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