On 8/31/2010 19:46, bearophile wrote: > But you can use const for constants that are known at run-time only. > While you can't use enum for constant known at run-time.
In C++, const is used for both run-time and compile-time constants. In practice, this works out fine. It its value can only be known at run-time, it's a run-time constant. If its value is used at compile-time, it's a compile-time constant. If both of these apply, it's an error. If neither applies, nobody cares if it's a compile-time or run-time constant. (The actual rules in C++ are a bit more complex, less intuitive, and less useful than that, which is presumably why Walter chose not to copy the C++ in this case. Still, overloading 'const' for both compile-time and run-time constants is viable, and more intuitive than the current situation with 'enum'.) -- Rainer Deyke - rain...@eldwood.com