Trait tract_hir::internal::tract_downcast_rs::__std::prelude::rust_2021::Ord1.0.0[][src]

pub trait Ord: Eq + PartialOrd<Self> {
#[must_use]    pub fn cmp(&self, other: &Self) -> Ordering;

#[must_use]    pub fn max(self, other: Self) -> Self { ... }
#[must_use] pub fn min(self, other: Self) -> Self { ... }
#[must_use] pub fn clamp(self, min: Self, max: Self) -> Self { ... } }

Trait for types that form a total order.

An order is a total order if it is (for all a, b and c):

  • total and asymmetric: exactly one of a < b, a == b or a > b is true; and
  • transitive, a < b and b < c implies a < c. The same must hold for both == and >.

Derivable

This trait can be used with #[derive]. When derived on structs, it will produce a lexicographic ordering based on the top-to-bottom declaration order of the struct’s members. When derived on enums, variants are ordered by their top-to-bottom discriminant order.

Lexicographical comparison

Lexicographical comparison is an operation with the following properties:

  • Two sequences are compared element by element.
  • The first mismatching element defines which sequence is lexicographically less or greater than the other.
  • If one sequence is a prefix of another, the shorter sequence is lexicographically less than the other.
  • If two sequence have equivalent elements and are of the same length, then the sequences are lexicographically equal.
  • An empty sequence is lexicographically less than any non-empty sequence.
  • Two empty sequences are lexicographically equal.

How can I implement Ord?

Ord requires that the type also be PartialOrd and Eq (which requires PartialEq).

Then you must define an implementation for cmp. You may find it useful to use cmp on your type’s fields.

Implementations of PartialEq, PartialOrd, and Ord must agree with each other. That is, a.cmp(b) == Ordering::Equal if and only if a == b and Some(a.cmp(b)) == a.partial_cmp(b) for all a and b. It’s easy to accidentally make them disagree by deriving some of the traits and manually implementing others.

Here’s an example where you want to sort people by height only, disregarding id and name:

use std::cmp::Ordering;

#[derive(Eq)]
struct Person {
    id: u32,
    name: String,
    height: u32,
}

impl Ord for Person {
    fn cmp(&self, other: &Self) -> Ordering {
        self.height.cmp(&other.height)
    }
}

impl PartialOrd for Person {
    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
        Some(self.cmp(other))
    }
}

impl PartialEq for Person {
    fn eq(&self, other: &Self) -> bool {
        self.height == other.height
    }
}

Required methods

#[must_use]pub fn cmp(&self, other: &Self) -> Ordering[src]

This method returns an Ordering between self and other.

By convention, self.cmp(&other) returns the ordering matching the expression self <operator> other if true.

Examples

use std::cmp::Ordering;

assert_eq!(5.cmp(&10), Ordering::Less);
assert_eq!(10.cmp(&5), Ordering::Greater);
assert_eq!(5.cmp(&5), Ordering::Equal);
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Provided methods

#[must_use]pub fn max(self, other: Self) -> Self1.21.0[src]

Compares and returns the maximum of two values.

Returns the second argument if the comparison determines them to be equal.

Examples

assert_eq!(2, 1.max(2));
assert_eq!(2, 2.max(2));

#[must_use]pub fn min(self, other: Self) -> Self1.21.0[src]

Compares and returns the minimum of two values.

Returns the first argument if the comparison determines them to be equal.

Examples

assert_eq!(1, 1.min(2));
assert_eq!(2, 2.min(2));

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self1.50.0[src]

Restrict a value to a certain interval.

Returns max if self is greater than max, and min if self is less than min. Otherwise this returns self.

Panics

Panics if min > max.

Examples

assert!((-3).clamp(-2, 1) == -2);
assert!(0.clamp(-2, 1) == 0);
assert!(2.clamp(-2, 1) == 1);
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Implementations on Foreign Types

impl Ord for u64[src]

impl<Ret, A, B, C, D, E, F, G, H> Ord for extern "C" fn(A, B, C, D, E, F, G, H) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret[src]

impl<Ret, A, B, C, D, E> Ord for unsafe fn(A, B, C, D, E) -> Ret[src]

impl<T, const N: usize> Ord for [T; N] where
    T: Ord
[src]

Implements comparison of arrays lexicographically.

impl<Ret> Ord for unsafe extern "C" fn() -> Ret[src]

impl<A, B, C, D> Ord for (A, B, C, D) where
    C: Ord,
    A: Ord,
    B: Ord,
    D: Ord + ?Sized
[src]

impl<Ret, A, B, C, D, E, F, G, H, I> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> Ord for extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret[src]

impl<Ret, A, B, C> Ord for extern "C" fn(A, B, C, ...) -> Ret[src]

impl<A, B> Ord for (A, B) where
    A: Ord,
    B: Ord + ?Sized
[src]

impl<Ret, A, B, C, D> Ord for unsafe extern "C" fn(A, B, C, D) -> Ret[src]

impl<Ret, A, B, C, D> Ord for unsafe extern "C" fn(A, B, C, D, ...) -> Ret[src]

impl Ord for str[src]

Implements ordering of strings.

Strings are ordered lexicographically by their byte values. This orders Unicode code points based on their positions in the code charts. This is not necessarily the same as “alphabetical” order, which varies by language and locale. Sorting strings according to culturally-accepted standards requires locale-specific data that is outside the scope of the str type.

impl<Ret, A, B, C, D, E, F, G, H, I, J> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Ord for fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret[src]

impl<Ret, A, B, C, D, E, F> Ord for extern "C" fn(A, B, C, D, E, F, ...) -> Ret[src]

impl<Ret, A, B, C, D, E> Ord for extern "C" fn(A, B, C, D, E) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Ord for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret[src]

impl Ord for u128[src]

impl Ord for u8[src]

impl<A, B, C, D, E, F, G, H, I, J, K, L> Ord for (A, B, C, D, E, F, G, H, I, J, K, L) where
    C: Ord,
    I: Ord,
    K: Ord,
    F: Ord,
    E: Ord,
    A: Ord,
    B: Ord,
    D: Ord,
    H: Ord,
    G: Ord,
    L: Ord + ?Sized,
    J: Ord
[src]

impl<A> Ord for (A,) where
    A: Ord + ?Sized
[src]

impl<Ret, A, B, C, D, E> Ord for fn(A, B, C, D, E) -> Ret[src]

impl<Ret, A, B> Ord for unsafe extern "C" fn(A, B) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> Ord for extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H> Ord for unsafe fn(A, B, C, D, E, F, G, H) -> Ret[src]

impl<Ret, A> Ord for fn(A) -> Ret[src]

impl<Ret, A, B, C> Ord for unsafe fn(A, B, C) -> Ret[src]

impl<Ret> Ord for fn() -> Ret[src]

impl<A, B, C> Ord for (A, B, C) where
    C: Ord + ?Sized,
    A: Ord,
    B: Ord
[src]

impl<Ret, A, B, C, D, E, F, G, H, I> Ord for fn(A, B, C, D, E, F, G, H, I) -> Ret[src]

impl Ord for usize[src]

impl<A, B, C, D, E, F, G, H, I, J, K> Ord for (A, B, C, D, E, F, G, H, I, J, K) where
    C: Ord,
    I: Ord,
    K: Ord + ?Sized,
    F: Ord,
    E: Ord,
    A: Ord,
    B: Ord,
    D: Ord,
    H: Ord,
    G: Ord,
    J: Ord
[src]

impl<A, B, C, D, E> Ord for (A, B, C, D, E) where
    C: Ord,
    E: Ord + ?Sized,
    A: Ord,
    B: Ord,
    D: Ord
[src]

impl<Ret, A, B, C, D, E, F, G> Ord for extern "C" fn(A, B, C, D, E, F, G) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret[src]

impl<Ret, A, B, C> Ord for unsafe extern "C" fn(A, B, C, ...) -> Ret[src]

impl Ord for i32[src]

impl<Ret, A, B> Ord for extern "C" fn(A, B, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F> Ord for fn(A, B, C, D, E, F) -> Ret[src]

impl<Ret, A, B, C> Ord for fn(A, B, C) -> Ret[src]

impl<Ret, A, B, C, D> Ord for fn(A, B, C, D) -> Ret[src]

impl<Ret> Ord for unsafe fn() -> Ret[src]

impl<Ret, A, B, C, D> Ord for extern "C" fn(A, B, C, D) -> Ret[src]

impl<T> Ord for [T] where
    T: Ord
[src]

Implements comparison of vectors lexicographically.

impl<Ret, A> Ord for unsafe fn(A) -> Ret[src]

impl<Ret, A, B, C, D, E, F> Ord for unsafe fn(A, B, C, D, E, F) -> Ret[src]

impl<Ret, A, B, C, D, E> Ord for unsafe extern "C" fn(A, B, C, D, E) -> Ret[src]

impl<Ret, A, B, C, D, E, F> Ord for unsafe extern "C" fn(A, B, C, D, E, F) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret[src]

impl<Ret, A, B, C> Ord for unsafe extern "C" fn(A, B, C) -> Ret[src]

impl<Ret, A> Ord for unsafe extern "C" fn(A, ...) -> Ret[src]

impl<A, B, C, D, E, F, G> Ord for (A, B, C, D, E, F, G) where
    C: Ord,
    F: Ord,
    E: Ord,
    A: Ord,
    B: Ord,
    D: Ord,
    G: Ord + ?Sized
[src]

impl<Ret, A, B, C> Ord for extern "C" fn(A, B, C) -> Ret[src]

impl Ord for u32[src]

impl<Ret, A, B, C, D, E, F, G> Ord for fn(A, B, C, D, E, F, G) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I> Ord for unsafe fn(A, B, C, D, E, F, G, H, I) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H> Ord for fn(A, B, C, D, E, F, G, H) -> Ret[src]

impl Ord for i8[src]

impl Ord for ()[src]

impl<Ret, A, B, C, D, E, F, G, H> Ord for extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret[src]

impl Ord for u16[src]

impl<Ret, A> Ord for extern "C" fn(A, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> Ord for unsafe fn(A, B, C, D, E, F, G, H, I, J) -> Ret[src]

impl<Ret, A> Ord for unsafe extern "C" fn(A) -> Ret[src]

impl Ord for ![src]

impl Ord for i64[src]

impl Ord for i128[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Ord for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret[src]

impl Ord for i16[src]

impl<Ret, A, B> Ord for fn(A, B) -> Ret[src]

impl<A, B, C, D, E, F> Ord for (A, B, C, D, E, F) where
    C: Ord,
    F: Ord + ?Sized,
    E: Ord,
    A: Ord,
    B: Ord,
    D: Ord
[src]

impl<Ret, A, B> Ord for unsafe extern "C" fn(A, B, ...) -> Ret[src]

impl<A, B, C, D, E, F, G, H, I, J> Ord for (A, B, C, D, E, F, G, H, I, J) where
    C: Ord,
    I: Ord,
    F: Ord,
    E: Ord,
    A: Ord,
    B: Ord,
    D: Ord,
    H: Ord,
    G: Ord,
    J: Ord + ?Sized
[src]

impl<Ret> Ord for extern "C" fn() -> Ret[src]

impl<Ret, A, B, C, D, E, F, G> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret[src]

impl<T> Ord for *mut T where
    T: ?Sized
[src]

impl<Ret, A> Ord for extern "C" fn(A) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Ord for unsafe fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret[src]

impl<Ret, A, B, C, D, E, F> Ord for unsafe extern "C" fn(A, B, C, D, E, F, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Ord for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret[src]

impl<T> Ord for *const T where
    T: ?Sized
[src]

impl Ord for bool[src]

impl<Ret, A, B> Ord for extern "C" fn(A, B) -> Ret[src]

impl<Ret, A, B, C, D> Ord for unsafe fn(A, B, C, D) -> Ret[src]

impl<Ret, A, B, C, D> Ord for extern "C" fn(A, B, C, D, ...) -> Ret[src]

impl<A, B, C, D, E, F, G, H> Ord for (A, B, C, D, E, F, G, H) where
    C: Ord,
    F: Ord,
    E: Ord,
    A: Ord,
    B: Ord,
    D: Ord,
    H: Ord + ?Sized,
    G: Ord
[src]

impl Ord for isize[src]

impl<Ret, A, B, C, D, E, F, G, H> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J> Ord for fn(A, B, C, D, E, F, G, H, I, J) -> Ret[src]

impl Ord for char[src]

impl<Ret, A, B, C, D, E, F, G, H> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G, H) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G> Ord for unsafe fn(A, B, C, D, E, F, G) -> Ret[src]

impl<Ret, A, B, C, D, E> Ord for extern "C" fn(A, B, C, D, E, ...) -> Ret[src]

impl<Ret, A, B> Ord for unsafe fn(A, B) -> Ret[src]

impl<'_, A> Ord for &'_ mut A where
    A: Ord + ?Sized
[src]

impl<Ret, A, B, C, D, E, F, G, H, I> Ord for extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Ord for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret[src]

impl<A, B, C, D, E, F, G, H, I> Ord for (A, B, C, D, E, F, G, H, I) where
    C: Ord,
    I: Ord + ?Sized,
    F: Ord,
    E: Ord,
    A: Ord,
    B: Ord,
    D: Ord,
    H: Ord,
    G: Ord
[src]

impl<Ret, A, B, C, D, E> Ord for unsafe extern "C" fn(A, B, C, D, E, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G> Ord for extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Ord for unsafe fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret[src]

impl<Ret, A, B, C, D, E, F, G, H, I> Ord for extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret[src]

impl<Ret, A, B, C, D, E, F> Ord for extern "C" fn(A, B, C, D, E, F) -> Ret[src]

impl<'_, A> Ord for &'_ A where
    A: Ord + ?Sized
[src]

impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Ord for fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret[src]

impl Ord for LevelFilter[src]

impl Ord for Level[src]

impl<'a> Ord for Metadata<'a>[src]

impl<'a> Ord for MetadataBuilder<'a>[src]

impl<B> Ord for BitSet<B> where
    B: BitBlock

impl<B> Ord for BitVec<B> where
    B: BitBlock
[src]

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Implementors

impl Ord for Cost[src]

impl Ord for DatumType

impl Ord for TDim

impl Ord for Ordering[src]

impl Ord for Infallible1.34.0[src]

impl Ord for ErrorKind[src]

impl Ord for IpAddr1.7.0[src]

impl Ord for SocketAddr[src]

impl Ord for InletId[src]

impl Ord for OutletId[src]

impl Ord for Symbol

impl Ord for String[src]

impl Ord for TypeId[src]

impl Ord for CpuidResult1.27.0[src]

impl Ord for CStr[src]

impl Ord for CString[src]

impl Ord for OsStr[src]

impl Ord for OsString[src]

impl Ord for Error[src]

impl Ord for PhantomPinned1.33.0[src]

impl Ord for Ipv4Addr[src]

impl Ord for Ipv6Addr[src]

impl Ord for SocketAddrV41.45.0[src]

impl Ord for SocketAddrV61.45.0[src]

impl Ord for NonZeroI81.34.0[src]

impl Ord for NonZeroI161.34.0[src]

impl Ord for NonZeroI321.34.0[src]

impl Ord for NonZeroI641.34.0[src]

impl Ord for NonZeroI1281.34.0[src]

impl Ord for NonZeroIsize1.34.0[src]

impl Ord for NonZeroU81.28.0[src]

impl Ord for NonZeroU161.28.0[src]

impl Ord for NonZeroU321.28.0[src]

impl Ord for NonZeroU641.28.0[src]

impl Ord for NonZeroU1281.28.0[src]

impl Ord for NonZeroUsize1.28.0[src]

impl Ord for NoneError[src]

impl Ord for Path[src]

impl Ord for PathBuf[src]

impl Ord for Duration1.3.0[src]

impl Ord for Instant1.8.0[src]

impl Ord for SystemTime1.8.0[src]

impl Ord for Axis[src]

impl<'_> Ord for Components<'_>[src]

impl<'_> Ord for PrefixComponent<'_>[src]

impl<'_, B> Ord for Cow<'_, B> where
    B: Ord + ToOwned + ?Sized
[src]

impl<'a> Ord for Component<'a>[src]

impl<'a> Ord for Prefix<'a>[src]

impl<'a> Ord for Location<'a>1.10.0[src]

impl<A> Ord for SmallVec<A> where
    A: Array,
    <A as Array>::Item: Ord

impl<A> Ord for VecDeque<A> where
    A: Ord
[src]

impl<Dyn> Ord for DynMetadata<Dyn> where
    Dyn: ?Sized
[src]

impl<K, V> Ord for BTreeMap<K, V> where
    K: Ord,
    V: Ord
[src]

impl<L, R> Ord for Either<L, R> where
    R: Ord,
    L: Ord
[src]

impl<P> Ord for Pin<P> where
    P: Deref,
    <P as Deref>::Target: Ord
1.41.0[src]

impl<T> Ord for Option<T> where
    T: Ord
[src]

impl<T> Ord for Poll<T> where
    T: Ord
1.36.0[src]

impl<T> Ord for Arc<T> where
    T: Ord + ?Sized
[src]

pub fn cmp(&self, other: &Arc<T>) -> Ordering[src]

Comparison for two Arcs.

The two are compared by calling cmp() on their inner values.

Examples

use std::sync::Arc;
use std::cmp::Ordering;

let five = Arc::new(5);

assert_eq!(Ordering::Less, five.cmp(&Arc::new(6)));

impl<T> Ord for PhantomData<T> where
    T: ?Sized
[src]

impl<T> Ord for BTreeSet<T> where
    T: Ord
[src]

impl<T> Ord for LinkedList<T> where
    T: Ord
[src]

impl<T> Ord for Cell<T> where
    T: Ord + Copy
1.10.0[src]

impl<T> Ord for RefCell<T> where
    T: Ord + ?Sized
1.10.0[src]

pub fn cmp(&self, other: &RefCell<T>) -> Ordering[src]

Panics

Panics if the value in either RefCell is currently borrowed.

impl<T> Ord for Reverse<T> where
    T: Ord
1.19.0[src]

impl<T> Ord for ManuallyDrop<T> where
    T: Ord + ?Sized
1.20.0[src]

impl<T> Ord for Wrapping<T> where
    T: Ord
[src]

impl<T> Ord for NonNull<T> where
    T: ?Sized
1.25.0[src]

impl<T> Ord for Rc<T> where
    T: Ord + ?Sized
[src]

pub fn cmp(&self, other: &Rc<T>) -> Ordering[src]

Comparison for two Rcs.

The two are compared by calling cmp() on their inner values.

Examples

use std::rc::Rc;
use std::cmp::Ordering;

let five = Rc::new(5);

assert_eq!(Ordering::Less, five.cmp(&Rc::new(6)));

impl<T, A> Ord for Box<T, A> where
    T: Ord + ?Sized,
    A: Allocator
[src]

impl<T, A> Ord for Vec<T, A> where
    T: Ord,
    A: Allocator
[src]

Implements ordering of vectors, lexicographically.

impl<T, E> Ord for Result<T, E> where
    T: Ord,
    E: Ord
[src]

impl<Y, R> Ord for GeneratorState<Y, R> where
    R: Ord,
    Y: Ord
[src]

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