MeasureAndPrintTime.h

struct MeasureAndPrintTime
{
	std::chrono::steady_clock::time_point start = std::chrono::steady_clock::now();

	~MeasureAndPrintTime()
	{
		auto diff = std::chrono::steady_clock::now() - start;
		auto usecs = std::chrono::duration_cast<std::chrono::microseconds>(diff).count();
		printf("took %lldus\n", (long long)usecs);
	}
} _dummy;