void swap(Expected& rhs) {
if (gotHam) {
if (!rhs.gotHam) {
auto t = std::move(rhs.spam);
new(&spam) std::exception_ptr(t);
std::swap(gotHam, rhs.gotHam);
}
} else {
if (rhs.gotHam) {
rhs.swap(*this);
} else {
spam.swap(rhs.spam);
std::swap(gotHam, rhs.gotHam);
}
}
}
