While C++ is always fun (except for C++ build times, of course), there are moments where we really get to have a blast. For me, the following C++ quiz is one of these moments. I’m not sure what did it for me. Was it the thrill of solving a challenge, or just the chance to play around with the language like a kid.
I hope you’ll have as much fun as I had.
Thanks to Anders Schau Knatten from CppQuiz for creating this quiz!
The Quiz!
#include <iostream>
template<class T>
void f(T) { std::cout << 1; }
template<>
void f<>(int*) { std::cout << 2; }
template<class T>
void f(T*) { std::cout << 3; }
int main() {
int *p = nullptr;
f( p );
}
Hint:
Before I spoil everything and reveal the answer, here’s a nice hint for you:
A declaration of a function template being explicitly specialized shall precede the declaration of the explicit specialization. During overload resolution, only the base function templates are considered, not specializations.
Know the answer?
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