Trait Comparable

pub trait Comparable<Q>: Equivalent<Q>
where
    Q: ?Sized,
{
    // Required method
    fn compare(&self, key: &Q) -> Ordering;
}

Key ordering trait.

This trait allows ordered map lookup to be customized. It has one blanket implementation that uses the regular solution with Borrow and Ord, just like BTreeMap does, so that you can pass &str to lookup into a map with String keys and so on.

Required Methods

fn compare(&self, key: &Q) -> Ordering

Compare self to key and return their ordering.

Implementations on Foreign Types

impl Comparable<VacantBuffer<'_>> for [u8]

fn compare(&self, other: &VacantBuffer<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for &&[u8]

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for &Cow<'_, [u8]>

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for &Box<[u8]>

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for &Arc<[u8]>

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for &Vec<u8>

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for &[u8]

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for Cow<'_, [u8]>

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for Box<[u8]>

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for Arc<[u8]>

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for Vec<u8>

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl Comparable<SliceRef<'_>> for [u8]

fn compare(&self, key: &SliceRef<'_>) -> Ordering

impl Comparable<Str<'_>> for &&str

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for &Cow<'_, str>

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for &str

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for &Box<str>

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for &String

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for &Arc<str>

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for Cow<'_, str>

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for str

fn compare(&self, key: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for Box<str>

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for String

fn compare(&self, other: &Str<'_>) -> Ordering

impl Comparable<Str<'_>> for Arc<str>

fn compare(&self, other: &Str<'_>) -> Ordering

impl<const N: usize> Comparable<SliceRef<'_>> for &[u8; N]

fn compare(&self, other: &SliceRef<'_>) -> Ordering

impl<const N: usize> Comparable<SliceRef<'_>> for [u8; N]

fn compare(&self, other: &SliceRef<'_>) -> Ordering

Implementors

impl Comparable<&&str> for Str<'_>

impl Comparable<&&[u8]> for SliceRef<'_>

impl Comparable<&Cow<'_, str>> for Str<'_>

impl Comparable<&Cow<'_, [u8]>> for SliceRef<'_>

impl Comparable<&str> for Str<'_>

impl Comparable<&Box<str>> for Str<'_>

impl Comparable<&Box<[u8]>> for SliceRef<'_>

impl Comparable<&String> for Str<'_>

impl Comparable<&Arc<str>> for Str<'_>

impl Comparable<&Arc<[u8]>> for SliceRef<'_>

impl Comparable<&Vec<u8>> for SliceRef<'_>

impl Comparable<&[u8]> for SliceRef<'_>

impl Comparable<Cow<'_, str>> for Str<'_>

impl Comparable<Cow<'_, [u8]>> for SliceRef<'_>

impl Comparable<Box<str>> for Str<'_>

impl Comparable<Box<[u8]>> for SliceRef<'_>

impl Comparable<String> for Str<'_>

impl Comparable<Arc<str>> for Str<'_>

impl Comparable<Arc<[u8]>> for SliceRef<'_>

impl Comparable<Vec<u8>> for SliceRef<'_>

impl<K, Q> Comparable<Q> for K

where K: Borrow<Q> + ?Sized, Q: Ord + ?Sized,

impl<const N: usize> Comparable<&[u8; N]> for SliceRef<'_>

impl<const N: usize> Comparable<[u8; N]> for SliceRef<'_>