Created
August 27, 2016 15:38
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#include<functional> | |
template<class T> | |
struct AsFunction | |
: public AsFunction<decltype(&T::operator())> | |
{}; | |
template<class ReturnType, class... Args> | |
struct AsFunction<ReturnType(Args...)> { | |
using type = std::function<ReturnType(Args...)>; | |
}; | |
template<class ReturnType, class... Args> | |
struct AsFunction<ReturnType(*)(Args...)> { | |
using type = std::function<ReturnType(Args...)>; | |
}; | |
template<class Class, class ReturnType, class... Args> | |
struct AsFunction<ReturnType(Class::*)(Args...) const> { | |
using type = std::function<ReturnType(Args...)>; | |
}; | |
template<class F> | |
auto toFunction( F f ) -> typename AsFunction<F>::type { | |
return {f}; | |
} | |
template <typename T> | |
void stdfunc_test(std::function<T(T)> func) {}; | |
int test_func(int arg) | |
{ | |
return arg + 2; | |
} | |
int main() | |
{ | |
stdfunc_test( toFunction([](int _) {return _ + 2;}) ); | |
stdfunc_test( toFunction(test_func) ); | |
return 0; | |
} | |
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