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copied!<p>A possible solution:</p> <pre><code>#include <iostream> #include <type_traits> class A { public: //... static const char fooString[]; }; const char A::fooString[] = "This is a Foo."; class B { public: //... static const char barString[]; }; const char B::barString[] = "This is a Bar."; class C { public: //... static const char fooString[]; }; const char C::fooString[] = "This is also a Foo."; void doFoo(const char*s) { std::cout << "doFoo: " << s << "\n"; } void doBar(const char*s) { std::cout << "doBar: " << s << "\n"; } template<class T> class Something { public: //This version should be called if T has a static member called "fooString", //so it should be called if T is either class A or C template <typename TT = T, typename std::enable_if<TT::fooString != 0, bool>::type = false> void doSomething() { doFoo(T::fooString); } //This version should be called if T has a static member called "barString", //so it should be called if T is class B template <typename TT = T, typename std::enable_if<TT::barString != 0, bool>::type = false> void doSomething() { doBar(T::barString); } }; int main() { Something<A> a; Something<B> b; Something<C> c; a.doSomething(); //should call doFoo(A::fooString) b.doSomething(); //should call doBar(B::barString) c.doSomething(); //should call doFoo(C::fooString) } </code></pre> <p>Output:</p> <pre><code>doFoo: This is a Foo. doBar: This is a Bar. doFoo: This is also a Foo. </code></pre>

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