SafeUnits is a library that exposes all common scientific units. All interactions between the units are checked at compile time so that only interactions between units that make sense will type check. An example of code that will throw an error at compile time due to incorrect units being used

Meter<int> distance = 10;
Seconds<int> time = 5;
Velocity<int> speed = distance - time;

where as the code below will type check correctly

Meter<int> distance = 10;
Seconds<int> time = 5;
Velocity<int> speed = distance / time;

The library also supports user defined literals for all types supplied such as

auto amps = 1.0A;