The following code example is taken from the book
C++ Templates - The Complete Guide, 2nd Edition
by David Vandevoorde, Nicolai M. Josuttis, and Douglas Gregor,
Addison-Wesley, 2017
© Copyright David Vandevoorde, Nicolai M. Josuttis, Douglas Gregor 2017
template<typename T, typename... Types>
bool VariantChoice<T, Types...>::destroy() {
if (getDerived().getDiscriminator() == Discriminator) {
// if type matches, call placement delete:
getDerived().template getBufferAs<T>()->~T();
return true;
}
return false;
}