Function quantize

pub fn quantize<A, C>(
    intervals: &[Interval<A, C>],
    attribute_value: A,
) -> Option<&Interval<A, C>>
where
    A: PartialOrd + Copy,
    C: Copy,

Find which interval applies to a given attribute value.

Examples

use oner_quantize::Interval;
use oner_quantize::quantize;

let intervals = vec![
    Interval::lower(15, "x"),
    Interval::range(15, 20, "y"),
    Interval::upper(20, "z")
];

// Quantize into an interval, and extract the corresponding class:
let class = |attribute_value| quantize(&intervals, attribute_value)
  .map(|interval| interval.class());

assert_eq!(class(10), Some(&"x"));
assert_eq!(class(15), Some(&"y"));
assert_eq!(class(99), Some(&"z"));