Imagine a world in which a simple 'if' has the semantics of a
static if, if the condition is evaluable at CT. Is this a world
you would rather live in?
template Fac(int i) {
if (i == 0) { // static if; doesn't introduce scope
enum Fac = 1;
} else {
enum Fac = i * Fac!(i-1);
}
}
// If the condition is not evaluable at CT, the ordinary runtime
if semantics (introducing scope) are used.
Me:
pros: simpler syntax
cons: harder to reason about; I recall Andrei's talk about the
static if proposal to C++: "we don't need _static else_" -- why
do we even need 'static' in 'static if' by this reasoning?
