What's the best way to force the user of a C++ function to acknowledge the semantic meaning of parameters that are numerical constants?

Question

I\'d like to write function interfaces that force the user to acknowledge the semantic meaning of built-in constants. For example, I\'d like to take

void rotate(         


        

Answer 1

Slower is in the eye of the beholder. How often do you call this code? Yes, you'll be creating bigger items on the stack when passing a Radians class than a primitive float.

Why is this important? At some point the user of your class has to have half a brain and understand the API. You could declare it as

void rotate(float radians);

Alternately, assuming you don't actually modify the angle, you could pass your Radians class by const reference:

void rotate(const Radians &angle);

which would presumably be faster than passing by value.