1.17.0[−][src]Enum core::ops::Bound
An endpoint of a range of keys.
Examples
Bound
s 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));Run
Using a tuple of Bound
s 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());Run
Variants
Included(T)
An inclusive bound.
Excluded(T)
An exclusive bound.
Unbounded
An infinite endpoint. Indicates that there is no bound in this direction.
Trait Implementations
impl<T: Copy> Copy for Bound<T>
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impl<T: Copy> Copy for Bound<T>
impl<T: PartialEq> PartialEq<Bound<T>> for Bound<T>
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impl<T: PartialEq> PartialEq<Bound<T>> for Bound<T>
fn eq(&self, other: &Bound<T>) -> bool
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fn eq(&self, other: &Bound<T>) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Bound<T>) -> bool
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fn ne(&self, other: &Bound<T>) -> bool
This method tests for !=
.
impl<T: Eq> Eq for Bound<T>
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impl<T: Eq> Eq for Bound<T>
impl<T: Clone> Clone for Bound<T>
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impl<T: Clone> Clone for Bound<T>
fn clone(&self) -> Bound<T>
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fn clone(&self) -> Bound<T>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl<T: Hash> Hash for Bound<T>
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impl<T: Hash> Hash for Bound<T>
fn hash<__HT: Hasher>(&self, state: &mut __HT)
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fn hash<__HT: Hasher>(&self, state: &mut __HT)
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H: Hasher>(data: &[Self], state: &mut H) where
Self: Sized,
1.3.0[src]
fn hash_slice<H: Hasher>(data: &[Self], state: &mut H) where
Self: Sized,
Feeds a slice of this type into the given [Hasher
]. Read more
impl<T: Debug> Debug for Bound<T>
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impl<T: Debug> Debug for Bound<T>
Auto Trait Implementations
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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impl<T, U> Into for T where
U: From<T>,
impl<T> From for T
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impl<T> From for T
impl<T, U> TryInto for T where
U: TryFrom<T>,
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impl<T, U> TryInto for T where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(Self) -> Result<U, <U as TryFrom<T>>::Error>
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fn try_into(Self) -> Result<U, <U as TryFrom<T>>::Error>
Performs the conversion.
impl<T, U> TryFrom for T where
T: From<U>,
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impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
The type returned in the event of a conversion error.
fn try_from(U) -> Result<T, <T as TryFrom<U>>::Error>
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fn try_from(U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
impl<T> Borrow for T where
T: ?Sized,
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impl<T> Borrow for T where
T: ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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impl<T> BorrowMut for T where
T: ?Sized,
fn borrow_mut(&mut Self) -> &mut T
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fn borrow_mut(&mut Self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Any for T where
T: 'static + ?Sized,
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impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&Self) -> TypeId
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fn get_type_id(&Self) -> TypeId
🔬 This is a nightly-only experimental API. (get_type_id
#27745)
this method will likely be replaced by an associated static
Gets the TypeId
of self
. Read more