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seanlilmateus/factorial.rs

Created March 11, 2015 20:17
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Rust (rustc 1.0.0-nightly) generic factorial
Raw
factorial.rs
use std::num::Int;
fn factorial<T: Int>(num: &T) -> T {
if *num == T::zero() || *num == T::one() {
T::one()
} else {
*num * factorial(&(*num - T::one()))
}
}
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