Enum core::ops::Bound1.17.0[][src]

pub enum Bound<T> {

An endpoint of a range of keys.


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));
assert_eq!((1..12).end_bound(), Excluded(&12));

Using a tuple of Bounds as an argument to BTreeMap::range. Note that in most cases, it’s better to use range syntax (1..5) instead.

use std::collections::BTreeMap;
use std::ops::Bound::{Excluded, Included, Unbounded};

let mut map = BTreeMap::new();
map.insert(3, "a");
map.insert(5, "b");
map.insert(8, "c");

for (key, value) in map.range((Excluded(3), Included(8))) {
    println!("{}: {}", key, value);

assert_eq!(Some((&3, &"a")), map.range((Unbounded, Included(5))).next());



An inclusive bound.


An exclusive bound.


An infinite endpoint. Indicates that there is no bound in this direction.


impl<T> Bound<T>[src]

pub fn as_ref(&self) -> Bound<&T>[src]

🔬 This is a nightly-only experimental API. (bound_as_ref #80996)

Converts from &Bound<T> to Bound<&T>.

pub fn as_mut(&mut self) -> Bound<&mut T>[src]

🔬 This is a nightly-only experimental API. (bound_as_ref #80996)

Converts from &mut Bound<T> to Bound<&T>.

impl<T: Clone> Bound<&T>[src]

pub fn cloned(self) -> Bound<T>[src]

🔬 This is a nightly-only experimental API. (bound_cloned #61356)

Map a Bound<&T> to a Bound<T> by cloning the contents of the bound.


use std::ops::Bound::*;
use std::ops::RangeBounds;

assert_eq!((1..12).start_bound(), Included(&1));
assert_eq!((1..12).start_bound().cloned(), Included(1));

Trait Implementations

impl<T: Clone> Clone for Bound<T>[src]

impl<T: Debug> Debug for Bound<T>[src]

impl<T: Hash> Hash for Bound<T>[src]

impl<T: PartialEq> PartialEq<Bound<T>> for Bound<T>[src]

impl<T: Copy> Copy for Bound<T>[src]

impl<T: Eq> Eq for Bound<T>[src]

impl<T> StructuralEq for Bound<T>[src]

impl<T> StructuralPartialEq for Bound<T>[src]

Auto Trait Implementations

impl<T> Send for Bound<T> where
    T: Send

impl<T> Sync for Bound<T> where
    T: Sync

impl<T> Unpin for Bound<T> where
    T: Unpin

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized

impl<T> Borrow<T> for T where
    T: ?Sized

impl<T> BorrowMut<T> for T where
    T: ?Sized

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.