## Structs

A (half-open) range bounded inclusively below and exclusively above
(

`start..end`

).A range only bounded inclusively below (

`start..`

).An unbounded range (

`..`

).A range bounded inclusively below and above (

`start..=end`

).A range only bounded exclusively above (

`..end`

).A range only bounded inclusively above (

`..=end`

).## Enums

An endpoint of a range of keys.

## Traits

OneSidedRangeExperimental

`OneSidedRange`

is implemented for built-in range types that are unbounded
on one side. For example, `a..`

, `..b`

and `..=c`

implement `OneSidedRange`

,
but `..`

, `d..e`

, and `f..=g`

do not.`RangeBounds`

is implemented by Rust’s built-in range types, produced
by range syntax like `..`

, `a..`

, `..b`

, `..=c`

, `d..e`

, or `f..=g`

.