I've taken a quick look at the documentation of Ben's units library and tried to compile it using VC++ 8.0. Andy Little wrote:
I liked the example in basic.cpp. It compiled and ran OK in gcc4.0 but unfortunately not in VC7.1.
I was unable to get it to compile in VC8.0. It gives errors in the compile-time rational number code (in compile_time_number.hpp).
Overall the library needs needs to be fleshed out much more though IMO.
Not for me. It looks very close to what I want. The only thing I would like to see is a preferred implementation for explicit conversion between different units of the same dimension. I could probably add this layer to the library myself but was wondering if you've done this already.
However I disagree that users like to spend time making their own units.
I disagree with Andy's disagreement. Only physicists working with all of the physical dimensions would find it more convenient to have a library with lots of dimensions and units prebuilt. For most applications (it seems to be very hard to convince the physicists that a units library has applications outside of physics), a more lightweight library is all that's needed.
Also I/O is useful.
Built-in I/O is more important when the library comes with a lot of built-in dimensions and units. It's much less important when the library does not. Deane