Compile time function execution...

[BCS]

Ary Manzana wrote:
> A question: is there anyway the compiler can tell the user if a certain 
> function can be executed at compile time? Those six rules may be hard to 
> memorize and while coding sensitive code it would be great to ask the 
> compiler "Is the function I'm writing can be executed at compile time?". 
> Otherwise it's just a guess.

int[foo()] should do it, I think, or temp!(foo()).

Both hack, but...