C++ Alias rather than Typedef Example

I've been reading through Scott Meyers latest book, and one item I picked up on, which had passed by my eyes before; but I'd not noted, was the use of alias instead of typedef.

I used typedefs a lot in my code, to try and simplify things, well today I've created my first piece of code which would have used a typedef, but which I've used alias "using" statements for:

void ConsolePause(const unsigned int& p_Seconds,

const bool& p_Show = false,

const std::string& p_Legend = "")

{

if (p_Seconds > 0)

{

using Time = std::chrono::high_resolution_clock;

using MS = std::chrono::milliseconds;

using FSEC = std::chrono::duration<float>;

using TimePoint = std::chrono::system_clock::time_point;

using MSCount = long long;

TimePoint l_start = Time::now();

bool l_exit = false;

do

{

TimePoint l_end = Time::now();

FSEC l_duration = l_end - l_start;

MS l_durationValue = std::chrono::duration_cast<MS>(l_duration);

MSCount l_count = static_cast<MSCount>(std::round((l_durationValue.count() / 1000)));

if (l_count >= p_Seconds)

{

break;

}

if (p_Show )

{

std::setfill(' ');

std::setw(30);

std::cout << "\r" << l_count;

if (!p_Legend.empty())

{

std::cout << " " << p_Legend;

}

}

}

while (true);

}

}

The code counts down on the console for the set number of seconds.

I like this, I think it's neater than the typedef system, though when I first wrote one instead of "using NAME = TYPE;"  I actually did "using TYPE = NAME;" on sort of autopilot.

Code derived from answer here: 

http://stackoverflow.com/questions/14391327/how-to-get-duration-as-int-millis-and-float-seconds-from-chrono