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<>
struct AccumulationTraits<BigInt> {
using AccT = BigInt;
static BigInt zero() {
return BigInt{0};
}
};