Struct nom::lib::std::cmp::Reverse 1.19.0[−][src]
pub struct Reverse<T>(pub T);
A helper struct for reverse ordering.
This struct is a helper to be used with functions like Vec::sort_by_key
and
can be used to reverse order a part of a key.
Example usage:
use std::cmp::Reverse; let mut v = vec![1, 2, 3, 4, 5, 6]; v.sort_by_key(|&num| (num > 3, Reverse(num))); assert_eq!(v, vec![3, 2, 1, 6, 5, 4]);
Trait Implementations
impl<T> Clone for Reverse<T> where
T: Clone,
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impl<T> Clone for Reverse<T> where
T: Clone,
fn clone(&self) -> Reverse<T>
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fn clone(&self) -> Reverse<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> PartialOrd<Reverse<T>> for Reverse<T> where
T: PartialOrd<T>,
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impl<T> PartialOrd<Reverse<T>> for Reverse<T> where
T: PartialOrd<T>,
fn partial_cmp(&self, other: &Reverse<T>) -> Option<Ordering>
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fn partial_cmp(&self, other: &Reverse<T>) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, other: &Reverse<T>) -> bool
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fn lt(&self, other: &Reverse<T>) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, other: &Reverse<T>) -> bool
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fn le(&self, other: &Reverse<T>) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn ge(&self, other: &Reverse<T>) -> bool
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fn ge(&self, other: &Reverse<T>) -> bool
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
fn gt(&self, other: &Reverse<T>) -> bool
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fn gt(&self, other: &Reverse<T>) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
impl<T> Ord for Reverse<T> where
T: Ord,
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impl<T> Ord for Reverse<T> where
T: Ord,
fn cmp(&self, other: &Reverse<T>) -> Ordering
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fn cmp(&self, other: &Reverse<T>) -> Ordering
This method returns an Ordering
between self
and other
. Read more
fn max(self, other: Self) -> Self
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fn max(self, other: Self) -> Self
Compares and returns the maximum of two values. Read more
fn min(self, other: Self) -> Self
1.21.0[src]
fn min(self, other: Self) -> Self
Compares and returns the minimum of two values. Read more
impl<T> Hash for Reverse<T> where
T: Hash,
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impl<T> Hash for Reverse<T> where
T: Hash,
fn hash<__HT>(&self, state: &mut __HT) where
__HT: Hasher,
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fn hash<__HT>(&self, state: &mut __HT) where
__HT: Hasher,
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl<T> Copy for Reverse<T> where
T: Copy,
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impl<T> Copy for Reverse<T> where
T: Copy,
impl<T> Eq for Reverse<T> where
T: Eq,
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impl<T> Eq for Reverse<T> where
T: Eq,
impl<T> PartialEq<Reverse<T>> for Reverse<T> where
T: PartialEq<T>,
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impl<T> PartialEq<Reverse<T>> for Reverse<T> where
T: PartialEq<T>,
fn eq(&self, other: &Reverse<T>) -> bool
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fn eq(&self, other: &Reverse<T>) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Reverse<T>) -> bool
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fn ne(&self, other: &Reverse<T>) -> bool
This method tests for !=
.
impl<T> Default for Reverse<T> where
T: Default,
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impl<T> Default for Reverse<T> where
T: Default,
impl<T> Debug for Reverse<T> where
T: Debug,
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impl<T> Debug for Reverse<T> where
T: Debug,