Memoization in compile-time
Dennis Ritchie via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Fri Mar 13 05:49:46 PDT 2015
On Friday, 13 March 2015 at 02:38:18 UTC, Rikki Cattermole wrote:
> You could assign it to e.g. an enum. Or force it over using
> meta-programming.
And this code can be rewritten to D?
template <int n>
struct Factorial
{
enum { value = n * Factorial<n - 1>::value };
};
template <>
struct Factorial<0>
{
enum { value = 1 };
};
int main()
{
constexpr auto x = Factorial<5>::value;
constexpr auto y = Factorial<7>::value;
}
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