rune 0.14.2

The Rune Language, an embeddable dynamic programming language for Rust.
Documentation 
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pub(crate) trait StepsBetween {
    fn steps_between(start: Self, end: Self) -> Option<usize>;
}

impl StepsBetween for i64 {
    #[inline]
    fn steps_between(start: Self, end: Self) -> Option<usize> {
        usize::try_from(end.checked_sub(start)?).ok()
    }
}

impl StepsBetween for u64 {
    #[inline]
    fn steps_between(start: Self, end: Self) -> Option<usize> {
        usize::try_from(end.checked_sub(start)?).ok()
    }
}