Do macro ao template

macro_templ.cpp

template<typename T, typename U>
void fill2(T &v, U start, U step) {
	*begin(v) = start;
	generate(begin(v)+1, end(v), [&start, &step]() { return start += step; }); 

	//alternative - this is not a proper std::fill, but a generate
	//for(auto &item : v) {
	//	item = start;
	//	start += step;
	//}
}

template<typename T>
typename T::value_type accum2(T &v) {
	typename T::value_type ret{};

	//auto inside lambda, only in c++14
	for_each(begin(v), end(v), [&ret](auto &val) { ret += val; });
	return ret;
}