pub enum Bound<T> {
Included(T),
Excluded(T),
Unbounded,
}Expand description
An endpoint of a range of keys.
§Examples
Bounds are range endpoints:
use std::ops::Bound::*;
use std::ops::RangeBounds;
assert_eq!((..100).start_bound(), Unbounded);
assert_eq!((1..12).start_bound(), Included(&1