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caryhaynie/test.cpp

Last active October 1, 2016 08:05
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Simple CRTP pattern using friend classes to hide implementing methods.
Raw
test.cpp
#include <iostream>
template <typename T>
class TestBase {
public:
void TestIface() {
static_cast<T*>(this)->TestImpl();
}
};
#define IMPLEMENTS(impl, iface) friend class iface<impl>
class Test : public TestBase<Test> {
IMPLEMENTS(Test, TestBase);
private:
void TestImpl() {
std::cout << "In TestImpl()" << std::endl;
}
};
template <typename T>
void func(TestBase<T>* iface) {
iface->TestIface();
}
int main(int argc, char** argv) {
Test t;
t.TestIface();
func(&t);
return 0;
}
@pavelschon
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pavelschon commented Oct 1, 2016

I have better solution w/o macro. See my gist: https://gist.github.com/pavelschon/67d987aaf173dfcc08279a132fccb9d8

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