Millimeters in boost::units

Question

I want to use boost::units for some SI metrics. However our code mostly deals with millimeters and instead of using

quantity value = 1*milli*m         


        

Answer 1

If you have a C++11 capable compiler you could use User Defined Literals for defining your units.

double operator"" _millimeter ( double value )
{
    return value;
}

You can use that like so:

double foo = 1000_millimeter;