On 03/29/2011 07:36 AM, Don wrote:
I'm a physicist and most of my programming involves quantities which have units. Yet, I can't really imagine myself using a units library. A few observations from my own code: * For each dimension, choose a unit, and use it throughout the code. For example, my code always uses mm because it's a natural size for the work I do. Mixing (say) cm and m is always a design mistake. Scaling should happen only at input and output, not in internal calculations. (So my feeling is, that the value of a units library would come from keeping track of dimension rather than scale).
Many of my bugs involving numeric code is that I mix scalars with units, not units of different scale.
Andrei
