57 lines
1.3 KiB
Rust
57 lines
1.3 KiB
Rust
use crate::common::*;
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pub trait RangeExt<T> {
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fn range_contains(&self, i: &T) -> bool;
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}
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impl<T> RangeExt<T> for Range<T>
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where
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T: PartialOrd,
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{
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fn range_contains(&self, i: &T) -> bool {
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i >= &self.start && i < &self.end
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}
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}
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impl<T> RangeExt<T> for RangeInclusive<T>
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where
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T: PartialOrd,
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{
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fn range_contains(&self, i: &T) -> bool {
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i >= self.start() && i <= self.end()
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[test]
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fn exclusive() {
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assert!(!(0..0).range_contains(&0));
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assert!(!(0..0).range_contains(&0));
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assert!(!(1..10).range_contains(&0));
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assert!(!(1..10).range_contains(&10));
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assert!(!(1..10).range_contains(&0));
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assert!(!(1..10).range_contains(&10));
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assert!((0..1).range_contains(&0));
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assert!((0..1).range_contains(&0));
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assert!((10..20).range_contains(&15));
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assert!((10..20).range_contains(&15));
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}
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#[test]
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fn inclusive() {
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assert!(!(0..=10).range_contains(&11));
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assert!(!(1..=10).range_contains(&0));
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assert!(!(5..=10).range_contains(&4));
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assert!((0..=0).range_contains(&0));
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assert!((0..=1).range_contains(&0));
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assert!((0..=10).range_contains(&0));
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assert!((0..=10).range_contains(&10));
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assert!((0..=10).range_contains(&7));
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assert!((1..=10).range_contains(&10));
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assert!((10..=20).range_contains(&15));
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}
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}
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