Trait std::cmp::Ord
[−]
[src]
pub trait Ord: Eq + PartialOrd<Self> { fn cmp(&self, other: &Self) -> Ordering; }
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 antisymmetric: exactly one of
a < b
,a == b
ora > b
is true; and - transitive,
a < b
andb < c
impliesa < c
. The same must hold for both==
and>
.
When this trait is derive
d, it produces a lexicographic ordering.
This trait can be used with #[derive]
.
Required Methods
fn cmp(&self, other: &Self) -> Ordering
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);
Implementors
impl<T> Ord for Wrapping<T> where T: Ord
impl Ord for Big32x40
impl Ord for Big8x3
impl<T> Ord for NonZero<T> where T: Zeroable + Ord
impl<Ret> Ord for fn() -> Ret
impl<Ret> Ord for extern "C" fn() -> Ret
impl<Ret> Ord for unsafe fn() -> Ret
impl<Ret> Ord for unsafe extern "C" fn() -> Ret
impl<Ret, A> Ord for fn(A) -> Ret
impl<Ret, A> Ord for extern "C" fn(A) -> Ret
impl<Ret, A> Ord for unsafe fn(A) -> Ret
impl<Ret, A> Ord for unsafe extern "C" fn(A) -> Ret
impl<Ret, A, B> Ord for fn(A, B) -> Ret
impl<Ret, A, B> Ord for extern "C" fn(A, B) -> Ret
impl<Ret, A, B> Ord for unsafe fn(A, B) -> Ret
impl<Ret, A, B> Ord for unsafe extern "C" fn(A, B) -> Ret
impl<Ret, A, B, C> Ord for fn(A, B, C) -> Ret
impl<Ret, A, B, C> Ord for extern "C" fn(A, B, C) -> Ret
impl<Ret, A, B, C> Ord for unsafe fn(A, B, C) -> Ret
impl<Ret, A, B, C> Ord for unsafe extern "C" fn(A, B, C) -> Ret
impl<Ret, A, B, C, D> Ord for fn(A, B, C, D) -> Ret
impl<Ret, A, B, C, D> Ord for extern "C" fn(A, B, C, D) -> Ret
impl<Ret, A, B, C, D> Ord for unsafe fn(A, B, C, D) -> Ret
impl<Ret, A, B, C, D> Ord for unsafe extern "C" fn(A, B, C, D) -> Ret
impl<Ret, A, B, C, D, E> Ord for fn(A, B, C, D, E) -> Ret
impl<Ret, A, B, C, D, E> Ord for extern "C" fn(A, B, C, D, E) -> Ret
impl<Ret, A, B, C, D, E> Ord for unsafe fn(A, B, C, D, E) -> Ret
impl<Ret, A, B, C, D, E> Ord for unsafe extern "C" fn(A, B, C, D, E) -> Ret
impl<Ret, A, B, C, D, E, F> Ord for fn(A, B, C, D, E, F) -> Ret
impl<Ret, A, B, C, D, E, F> Ord for extern "C" fn(A, B, C, D, E, F) -> Ret
impl<Ret, A, B, C, D, E, F> Ord for unsafe fn(A, B, C, D, E, F) -> Ret
impl<Ret, A, B, C, D, E, F> Ord for unsafe extern "C" fn(A, B, C, D, E, F) -> Ret
impl<Ret, A, B, C, D, E, F, G> Ord for fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G> Ord for extern "C" fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G> Ord for unsafe fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G> Ord for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Ord for fn(A, B, C, D, E, F, G, H) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Ord for extern "C" fn(A, B, C, D, E, F, G, H) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Ord for unsafe fn(A, B, C, D, E, F, G, H) -> Ret
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
impl<Ret, A, B, C, D, E, F, G, H, I> Ord for fn(A, B, C, D, E, F, G, H, I) -> Ret
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
impl<T> Ord for *const T where T: ?Sized
impl<T> Ord for *mut T where T: ?Sized
impl<T> Ord for PhantomData<T> where T: ?Sized
impl Ord for Ordering
impl Ord for ()
impl Ord for bool
impl Ord for char
impl Ord for usize
impl Ord for u8
impl Ord for u16
impl Ord for u32
impl Ord for u64
impl Ord for isize
impl Ord for i8
impl Ord for i16
impl Ord for i32
impl Ord for i64
impl<'a, A> Ord for &'a A where A: Ord + ?Sized
impl<'a, A> Ord for &'a mut A where A: Ord + ?Sized
impl<T> Ord for [T; 0] where T: Ord
impl<T> Ord for [T; 1] where T: Ord
impl<T> Ord for [T; 2] where T: Ord
impl<T> Ord for [T; 3] where T: Ord
impl<T> Ord for [T; 4] where T: Ord
impl<T> Ord for [T; 5] where T: Ord
impl<T> Ord for [T; 6] where T: Ord
impl<T> Ord for [T; 7] where T: Ord
impl<T> Ord for [T; 8] where T: Ord
impl<T> Ord for [T; 9] where T: Ord
impl<T> Ord for [T; 10] where T: Ord
impl<T> Ord for [T; 11] where T: Ord
impl<T> Ord for [T; 12] where T: Ord
impl<T> Ord for [T; 13] where T: Ord
impl<T> Ord for [T; 14] where T: Ord
impl<T> Ord for [T; 15] where T: Ord
impl<T> Ord for [T; 16] where T: Ord
impl<T> Ord for [T; 17] where T: Ord
impl<T> Ord for [T; 18] where T: Ord
impl<T> Ord for [T; 19] where T: Ord
impl<T> Ord for [T; 20] where T: Ord
impl<T> Ord for [T; 21] where T: Ord
impl<T> Ord for [T; 22] where T: Ord
impl<T> Ord for [T; 23] where T: Ord
impl<T> Ord for [T; 24] where T: Ord
impl<T> Ord for [T; 25] where T: Ord
impl<T> Ord for [T; 26] where T: Ord
impl<T> Ord for [T; 27] where T: Ord
impl<T> Ord for [T; 28] where T: Ord
impl<T> Ord for [T; 29] where T: Ord
impl<T> Ord for [T; 30] where T: Ord
impl<T> Ord for [T; 31] where T: Ord
impl<T> Ord for [T; 32] where T: Ord
impl<T> Ord for Option<T> where T: Ord
impl<T, E> Ord for Result<T, E> where E: Ord, T: Ord
impl<T> Ord for [T] where T: Ord
impl Ord for str
impl<A> Ord for (A,) where A: Ord
impl<A, B> Ord for (A, B) where A: Ord, B: Ord
impl<A, B, C> Ord for (A, B, C) where B: Ord, A: Ord, C: Ord
impl<A, B, C, D> Ord for (A, B, C, D) where A: Ord, C: Ord, B: Ord, D: Ord
impl<A, B, C, D, E> Ord for (A, B, C, D, E) where A: Ord, E: Ord, C: Ord, D: Ord, B: Ord
impl<A, B, C, D, E, F> Ord for (A, B, C, D, E, F) where B: Ord, F: Ord, D: Ord, A: Ord, E: Ord, C: Ord
impl<A, B, C, D, E, F, G> Ord for (A, B, C, D, E, F, G) where G: Ord, B: Ord, E: Ord, C: Ord, D: Ord, F: Ord, A: Ord
impl<A, B, C, D, E, F, G, H> Ord for (A, B, C, D, E, F, G, H) where G: Ord, C: Ord, H: Ord, D: Ord, F: Ord, E: Ord, B: Ord, A: Ord
impl<A, B, C, D, E, F, G, H, I> Ord for (A, B, C, D, E, F, G, H, I) where E: Ord, D: Ord, I: Ord, G: Ord, B: Ord, H: Ord, F: Ord, A: Ord, C: Ord
impl<A, B, C, D, E, F, G, H, I, J> Ord for (A, B, C, D, E, F, G, H, I, J) where J: Ord, H: Ord, B: Ord, A: Ord, D: Ord, C: Ord, G: Ord, F: Ord, E: Ord, I: Ord
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 F: Ord, E: Ord, D: Ord, K: Ord, I: Ord, B: Ord, G: Ord, J: Ord, C: Ord, H: Ord, A: Ord
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 D: Ord, J: Ord, H: Ord, F: Ord, I: Ord, A: Ord, L: Ord, K: Ord, C: Ord, B: Ord, E: Ord, G: Ord
impl<T> Ord for Box<T> where T: Ord + ?Sized
impl<T> Ord for Arc<T> where T: Ord + ?Sized
impl<T> Ord for Rc<T> where T: Ord + ?Sized
impl<K, V> Ord for BTreeMap<K, V> where V: Ord, K: Ord
impl<T> Ord for BTreeSet<T> where T: Ord
impl<'a, B> Ord for Cow<'a, B> where B: Ord + ToOwned + ?Sized
impl<E> Ord for EnumSet<E> where E: Ord
impl<A> Ord for LinkedList<A> where A: Ord
impl Ord for String
impl<T> Ord for Vec<T> where T: Ord
impl<A> Ord for VecDeque<A> where A: Ord