Created
November 27, 2010 06:30
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Static factorial in clay
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procedure fact; | |
overload fact(static 0) = 1; | |
[n | n > 0] | |
overload fact(static n) = fact(static n - 1) * n; | |
main() { | |
var x = fact(static 4); // == 24, calculated at compile time | |
} |
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template <int N> | |
struct Factorial | |
{ | |
enum { value = N * Factorial<N - 1>::value }; | |
}; | |
template <> | |
struct Factorial<0> | |
{ | |
enum { value = 1 }; | |
}; | |
void foo() { | |
int x = Factorial<4>::value; // == 24 | |
} |
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