Struct wasmtime_environ::__core::cmp::Reverse

1.19.0 · source · [−]

#[repr(transparent)]
pub struct Reverse<T>(pub T);

Expand description

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.

Examples

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]);

Tuple Fields

0: T

Trait Implementations

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impl<T> Clone for Reverse<T> where
T: Clone,

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fn clone(&self) -> Reverse<T>

Returns a copy of the value. Read more

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fn clone_from(&mut self, other: &Reverse<T>)

Performs copy-assignment from source. Read more

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impl<T> Debug for Reverse<T> where
T: Debug,

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more

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impl<T> Default for Reverse<T> where
T: Default,

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fn default() -> Reverse<T>

Returns the “default value” for a type. Read more

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impl<'de, T> Deserialize<'de> for Reverse<T> where
T: Deserialize<'de>,

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fn deserialize<D>(
deserializer: D
) -> Result<Reverse<T>, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

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impl<T> Hash for Reverse<T> where
T: Hash,

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fn hash<H>(&self, state: &mut H) where
__H: Hasher,

Feeds this value into the given Hasher. Read more

1.3.0 · source

fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

Feeds a slice of this type into the given Hasher. Read more

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impl<T> Ord for Reverse<T> where
T: Ord,

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fn cmp(&self, other: &Reverse<T>) -> Ordering

This method returns an Ordering between self and other. Read more

1.21.0 · source

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values. Read more

1.21.0 · source

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values. Read more

1.50.0 · source

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval. Read more

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impl<T> PartialEq<Reverse<T>> for Reverse<T> where
T: PartialEq<T>,

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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

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fn ne(&self, other: &Reverse<T>) -> bool

This method tests for !=.

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impl<T> PartialOrd<Reverse<T>> for Reverse<T> where
T: PartialOrd<T>,

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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

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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

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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

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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

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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

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impl<T> Serialize for Reverse<T> where
T: Serialize,

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fn serialize<S>(
 &self,
 serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
 S: Serializer,

Serialize this value into the given Serde serializer. Read more

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impl<T> StructuralPartialEq for Reverse<T>

Auto Trait Implementations

impl<T> RefUnwindSafe for Reverse<T> where
T: RefUnwindSafe,

impl<T> Send for Reverse<T> where
T: Send,

impl<T> Sync for Reverse<T> where
T: Sync,

impl<T> Unpin for Reverse<T> where
T: Unpin,

impl<T> UnwindSafe for Reverse<T> where
T: UnwindSafe,

Blanket Implementations

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

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fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

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Struct wasmtime_environ::__core::cmp::Reverse

Examples

Tuple Fields

Trait Implementations

impl<T> Clone for Reverse<T> where T: Clone,

fn clone(&self) -> Reverse<T>

fn clone_from(&mut self, other: &Reverse<T>)

impl<T> Debug for Reverse<T> where T: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

impl<T> Default for Reverse<T> where T: Default,

fn default() -> Reverse<T>

impl<'de, T> Deserialize<'de> for Reverse<T> where T: Deserialize<'de>,

fn deserialize<D>( deserializer: D) -> Result<Reverse<T>, <D as Deserializer<'de>>::Error> where D: Deserializer<'de>,

impl<T> Hash for Reverse<T> where T: Hash,

fn hash<__H>(&self, state: &mut __H) where __H: Hasher,

fn hash_slice<H>(data: &[Self], state: &mut H) where H: Hasher,

impl<T> Ord for Reverse<T> where T: Ord,

fn cmp(&self, other: &Reverse<T>) -> Ordering

fn max(self, other: Self) -> Self

fn min(self, other: Self) -> Self

fn clamp(self, min: Self, max: Self) -> Self

impl<T> PartialEq<Reverse<T>> for Reverse<T> where T: PartialEq<T>,

fn eq(&self, other: &Reverse<T>) -> bool

fn ne(&self, other: &Reverse<T>) -> bool

impl<T> PartialOrd<Reverse<T>> for Reverse<T> where T: PartialOrd<T>,

fn partial_cmp(&self, other: &Reverse<T>) -> Option<Ordering>

fn lt(&self, other: &Reverse<T>) -> bool

fn le(&self, other: &Reverse<T>) -> bool

fn gt(&self, other: &Reverse<T>) -> bool

fn ge(&self, other: &Reverse<T>) -> bool

impl<T> Serialize for Reverse<T> where T: Serialize,

fn serialize<S>( &self, serializer: S) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where S: Serializer,

impl<T> Copy for Reverse<T> where T: Copy,

impl<T> Eq for Reverse<T> where T: Eq,

impl<T> StructuralEq for Reverse<T>

impl<T> StructuralPartialEq for Reverse<T>

Auto Trait Implementations

impl<T> RefUnwindSafe for Reverse<T> where T: RefUnwindSafe,

impl<T> Send for Reverse<T> where T: Send,

impl<T> Sync for Reverse<T> where T: Sync,

impl<T> Unpin for Reverse<T> where T: Unpin,

impl<T> UnwindSafe for Reverse<T> where T: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

fn borrow_mut(&mut self) -> &mut T

impl<Q, K> Equivalent<K> for Q where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

fn equivalent(&self, key: &K) -> bool

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

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

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

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

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<T> DeserializeOwned for T where T: for<'de> Deserialize<'de>,

impl<T> Clone for Reverse<T> where
T: Clone,

impl<T> Debug for Reverse<T> where
T: Debug,

impl<T> Default for Reverse<T> where
T: Default,

impl<'de, T> Deserialize<'de> for Reverse<T> where
T: Deserialize<'de>,

fn deserialize<D>(
deserializer: D
) -> Result<Reverse<T>, <D as Deserializer<'de>>::Error> where
D: Deserializer<'de>,

impl<T> Hash for Reverse<T> where
T: Hash,

fn hash<H>(&self, state: &mut H) where
__H: Hasher,

fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,

impl<T> Ord for Reverse<T> where
T: Ord,

impl<T> PartialEq<Reverse<T>> for Reverse<T> where
T: PartialEq<T>,

impl<T> PartialOrd<Reverse<T>> for Reverse<T> where
T: PartialOrd<T>,

impl<T> Serialize for Reverse<T> where
T: Serialize,

fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
S: Serializer,

impl<T> Copy for Reverse<T> where
T: Copy,

impl<T> Eq for Reverse<T> where
T: Eq,

impl<T> RefUnwindSafe for Reverse<T> where
T: RefUnwindSafe,

impl<T> Send for Reverse<T> where
T: Send,

impl<T> Sync for Reverse<T> where
T: Sync,

impl<T> Unpin for Reverse<T> where
T: Unpin,

impl<T> UnwindSafe for Reverse<T> where
T: UnwindSafe,

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<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

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

impl<T> ToOwned for T where
T: Clone,

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

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

impl<T> DeserializeOwned for T where
T: for<'de> Deserialize<'de>,