range_cmp

This Rust crate provides the RangeComparable trait on all types that implement Ord. This traits exposes a range_cmp associated method that allows comparing a value with a range of values:

use range_cmp::{RangeComparable, RangeOrdering};
assert_eq!(15.range_cmp(20..30), RangeOrdering::Below);
assert_eq!(25.range_cmp(20..30), RangeOrdering::Inside);
assert_eq!(35.range_cmp(20..30), RangeOrdering::Above);

Empty ranges handling

This crate does not strictly handle empty ranges, which are not mathematically comparable. In this case, range_cmp will show different behavior depending on the representation of the empty range. For instance:

assert_eq!(30.range_cmp(45..35), RangeOrdering::Below);
assert_eq!(30.range_cmp(25..15), RangeOrdering::Above);
assert_eq!(0.range_cmp(0..0), RangeOrdering::Above);