3 ms·

Maybe 'constexpr' has been added rather to express the intent (for example, for library development)?

• WalterBright 9y ago
  You can annotate D functions as 'pure', which would have that effect, but purity is used for other reasons. Evaluating functions at compile time has another wrinkle in D - it is path dependent: int square(int x) { if (x < 100) return x * x; printf("oops\n"); return 0; } const int x = square(3); // works const int y = square(100); // fails at compile time I.e. the path taken through the function has to be pure, not every part of the function.