pub trait Hash {
fn hash<H>(&self, state: &mut H)
where
H: Hasher;
fn hash_slice<H>(data: &[Self], state: &mut H)
where
H: Hasher,
{ ... }
}
mtls
only.Expand description
A hashable type.
Types implementing Hash
are able to be hash
ed with an instance of
Hasher
.
Implementing Hash
You can derive Hash
with #[derive(Hash)]
if all fields implement Hash
.
The resulting hash will be the combination of the values from calling
hash
on each field.
#[derive(Hash)]
struct Rustacean {
name: String,
country: String,
}
If you need more control over how a value is hashed, you can of course
implement the Hash
trait yourself:
use std::hash::{Hash, Hasher};
struct Person {
id: u32,
name: String,
phone: u64,
}
impl Hash for Person {
fn hash<H: Hasher>(&self, state: &mut H) {
self.id.hash(state);
self.phone.hash(state);
}
}
Hash
and Eq
When implementing both Hash
and Eq
, it is important that the following
property holds:
k1 == k2 -> hash(k1) == hash(k2)
In other words, if two keys are equal, their hashes must also be equal.
HashMap
and HashSet
both rely on this behavior.
Thankfully, you won’t need to worry about upholding this property when
deriving both Eq
and Hash
with #[derive(PartialEq, Eq, Hash)]
.
Prefix collisions
Implementations of hash
should ensure that the data they
pass to the Hasher
are prefix-free. That is,
unequal values should cause two different sequences of values to be written,
and neither of the two sequences should be a prefix of the other.
For example, the standard implementation of Hash
for &str
passes an extra
0xFF
byte to the Hasher
so that the values ("ab", "c")
and ("a", "bc")
hash differently.
Portability
Due to differences in endianness and type sizes, data fed by Hash
to a Hasher
should not be considered portable across platforms. Additionally the data passed by most
standard library types should not be considered stable between compiler versions.
This means tests shouldn’t probe hard-coded hash values or data fed to a Hasher
and
instead should check consistency with Eq
.
Serialization formats intended to be portable between platforms or compiler versions should
either avoid encoding hashes or only rely on Hash
and Hasher
implementations that
provide additional guarantees.
Required Methods
Provided Methods
1.3.0 · sourcefn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
Feeds a slice of this type into the given Hasher
.
This method is meant as a convenience, but its implementation is
also explicitly left unspecified. It isn’t guaranteed to be
equivalent to repeated calls of hash
and implementations of
Hash
should keep that in mind and call hash
themselves
if the slice isn’t treated as a whole unit in the PartialEq
implementation.
For example, a VecDeque
implementation might naïvely call
as_slices
and then hash_slice
on each slice, but this
is wrong since the two slices can change with a call to
make_contiguous
without affecting the PartialEq
result. Since these slices aren’t treated as singular
units, and instead part of a larger deque, this method cannot
be used.
Examples
use std::collections::hash_map::DefaultHasher;
use std::hash::{Hash, Hasher};
let mut hasher = DefaultHasher::new();
let numbers = [6, 28, 496, 8128];
Hash::hash_slice(&numbers, &mut hasher);
println!("Hash is {:x}!", hasher.finish());
Implementations on Foreign Types
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash 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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J> Hash 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> Hash for unsafe fn(A, B, C, D, E, F, G, H, I, J) -> Ret
sourceimpl<T, const LANES: usize> Hash for Simd<T, LANES> where
T: SimdElement + Hash,
LaneCount<LANES>: SupportedLaneCount,
impl<T, const LANES: usize> Hash for Simd<T, LANES> where
T: SimdElement + Hash,
LaneCount<LANES>: SupportedLaneCount,
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I> Hash 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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F> Hash for unsafe extern "C" fn(A, B, C, D, E, F, ...) -> Ret
impl<Ret, A, B, C, D, E, F> Hash for unsafe extern "C" fn(A, B, C, D, E, F, ...) -> Ret
sourceimpl<A, B, C, D, E, F> Hash for (A, B, C, D, E, F) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash + ?Sized,
impl<A, B, C, D, E, F> Hash for (A, B, C, D, E, F) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash + ?Sized,
1.34.0 · sourceimpl Hash for NonZeroI32
impl Hash for NonZeroI32
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G> Hash for extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret
impl<Ret, A, B, C, D, E, F, G> Hash for extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J> Hash 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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J> Hash 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> Hash for fn(A, B, C, D, E, F, G, H, I, J) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I> Hash 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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret
1.34.0 · sourceimpl Hash for NonZeroIsize
impl Hash for NonZeroIsize
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I> Hash 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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret
sourceimpl<A, B, C, D, E, F, G, H, I, J> Hash for (A, B, C, D, E, F, G, H, I, J) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash,
J: Hash + ?Sized,
impl<A, B, C, D, E, F, G, H, I, J> Hash for (A, B, C, D, E, F, G, H, I, J) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash,
J: Hash + ?Sized,
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I> Hash 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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret
1.28.0 · sourceimpl Hash for NonZeroU128
impl Hash for NonZeroU128
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J> Hash 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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret
1.33.0 · sourceimpl Hash for PhantomPinned
impl Hash for PhantomPinned
sourceimpl<A, B, C, D, E, F, G, H, I, J, K> Hash for (A, B, C, D, E, F, G, H, I, J, K) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash,
J: Hash,
K: Hash + ?Sized,
impl<A, B, C, D, E, F, G, H, I, J, K> Hash for (A, B, C, D, E, F, G, H, I, J, K) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash,
J: Hash,
K: Hash + ?Sized,
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash for unsafe 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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret
impl<Ret, A, B, C, D, E, F, G> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret
1.34.0 · sourceimpl Hash for NonZeroI64
impl Hash for NonZeroI64
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash 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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret
1.28.0 · sourceimpl Hash for NonZeroUsize
impl Hash for NonZeroUsize
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash 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> Hash for unsafe fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
sourceimpl<T> Hash for Saturating<T> where
T: Hash,
impl<T> Hash for Saturating<T> where
T: Hash,
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H> Hash for extern "C" fn(A, B, C, D, E, F, G, H) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Hash for extern "C" fn(A, B, C, D, E, F, G, H) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J> Hash 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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash 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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
1.28.0 · sourceimpl Hash for NonZeroU16
impl Hash for NonZeroU16
sourceimpl<A, B, C, D, E, F, G> Hash for (A, B, C, D, E, F, G) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash + ?Sized,
impl<A, B, C, D, E, F, G> Hash for (A, B, C, D, E, F, G) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash + ?Sized,
sourceimpl<Dyn> Hash for DynMetadata<Dyn> where
Dyn: ?Sized,
impl<Dyn> Hash for DynMetadata<Dyn> where
Dyn: ?Sized,
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret
impl<Ret, A, B, C, D, E, F, G> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret
1.34.0 · sourceimpl Hash for NonZeroI16
impl Hash for NonZeroI16
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H> Hash for extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Hash for extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash for unsafe 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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash 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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret
1.28.0 · sourceimpl Hash for NonZeroU64
impl Hash for NonZeroU64
sourceimpl<A, B, C, D, E, F, G, H, I, J, K, L> Hash for (A, B, C, D, E, F, G, H, I, J, K, L) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash,
J: Hash,
K: Hash,
L: Hash + ?Sized,
impl<A, B, C, D, E, F, G, H, I, J, K, L> Hash for (A, B, C, D, E, F, G, H, I, J, K, L) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash,
J: Hash,
K: Hash,
L: Hash + ?Sized,
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Hash 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> Hash for fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash 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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
1.28.0 · sourceimpl Hash for NonZeroU32
impl Hash for NonZeroU32
sourceimpl<T> Hash for PhantomData<T> where
T: ?Sized,
impl<T> Hash for PhantomData<T> where
T: ?Sized,
sourceimpl<A, B, C, D, E> Hash for (A, B, C, D, E) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash + ?Sized,
impl<A, B, C, D, E> Hash for (A, B, C, D, E) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash + ?Sized,
sourceimpl<A, B, C, D, E, F, G, H> Hash for (A, B, C, D, E, F, G, H) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash + ?Sized,
impl<A, B, C, D, E, F, G, H> Hash for (A, B, C, D, E, F, G, H) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash + ?Sized,
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J> Hash 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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I> Hash for unsafe fn(A, B, C, D, E, F, G, H, I) -> Ret
impl<Ret, A, B, C, D, E, F, G, H, I> Hash for unsafe fn(A, B, C, D, E, F, G, H, I) -> Ret
sourceimpl<T, const N: usize> Hash for [T; N] where
T: Hash,
impl<T, const N: usize> Hash for [T; N] where
T: Hash,
The hash of an array is the same as that of the corresponding slice,
as required by the Borrow
implementation.
#![feature(build_hasher_simple_hash_one)]
use std::hash::BuildHasher;
let b = std::collections::hash_map::RandomState::new();
let a: [u8; 3] = [0xa8, 0x3c, 0x09];
let s: &[u8] = &[0xa8, 0x3c, 0x09];
assert_eq!(b.hash_one(a), b.hash_one(s));
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash 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> Hash for fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
sourceimpl<A, B, C, D, E, F, G, H, I> Hash for (A, B, C, D, E, F, G, H, I) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash + ?Sized,
impl<A, B, C, D, E, F, G, H, I> Hash for (A, B, C, D, E, F, G, H, I) where
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash + ?Sized,
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash 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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H) -> Ret
impl<Ret, A, B, C, D, E, F, G, H> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H) -> Ret
1.34.0 · sourceimpl Hash for NonZeroI128
impl Hash for NonZeroI128
1.4.0 · sourceimpl<Ret, A, B, C, D, E, F, G, H, I, J, K> Hash 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> Hash for unsafe fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
sourceimpl<'a> Hash for MetadataBuilder<'a>
impl<'a> Hash for MetadataBuilder<'a>
Implementors
impl Hash for CipherSuite
impl Hash for Sig
impl Hash for rocket::http::Method
impl Hash for SameSite
impl Hash for StatusClass
impl Hash for Feature
impl Hash for Sign
impl Hash for rocket::mtls::oid::asn1_rs::nom::error::ErrorKind
impl Hash for rocket::mtls::oid::asn1_rs::nom::lib::std::cmp::Ordering
impl Hash for Infallible
impl Hash for ByteUnit
impl Hash for Key
impl Hash for rocket::form::name::Name
impl Hash for NameBuf<'_>
impl Hash for NameView<'_>
impl Hash for rocket::http::hyper::body::Bytes
impl Hash for HeaderValue
impl Hash for rocket::http::hyper::Method
impl Hash for Version
impl Hash for rocket::http::hyper::uri::Authority
Case-insensitive hashing
Examples
let a: Authority = "HELLO.com".parse().unwrap();
let b: Authority = "hello.coM".parse().unwrap();
let mut s = DefaultHasher::new();
a.hash(&mut s);
let a = s.finish();
let mut s = DefaultHasher::new();
b.hash(&mut s);
let b = s.finish();
assert_eq!(a, b);
impl Hash for Scheme
Case-insensitive hashing
impl Hash for Uri
impl Hash for ContentType
impl Hash for MediaType
impl Hash for RawStr
impl Hash for RawStrBuf
impl Hash for Status
impl Hash for UncasedStr
impl Hash for Asterisk
impl Hash for Event
impl Hash for Braced
impl Hash for Hyphenated
impl Hash for Simple
impl Hash for Urn
impl Hash for rocket::serde::uuid::Error
impl Hash for Uuid
impl Hash for BigInt
impl Hash for BigUint
impl Hash for ASN1Time
impl Hash for rocket::mtls::oid::asn1_rs::nom::lib::std::fmt::Error
impl Hash for RangeFull
impl Hash for String
impl<'_> Hash for Uncased<'_>
impl<'_> Hash for Absolute<'_>
impl<'_> Hash for rocket::http::uri::Authority<'_>
impl<'_> Hash for Host<'_>
impl<'_> Hash for Origin<'_>
impl<'_> Hash for rocket::http::uri::Path<'_>
impl<'_> Hash for Query<'_>
impl<'_> Hash for Reference<'_>
impl<'a> Hash for Oid<'a>
impl<'h> Hash for Header<'h>
impl<Idx> Hash for Range<Idx> where
Idx: Hash,
impl<Idx> Hash for RangeFrom<Idx> where
Idx: Hash,
impl<Idx> Hash for RangeInclusive<Idx> where
Idx: Hash,
impl<Idx> Hash for RangeTo<Idx> where
Idx: Hash,
impl<Idx> Hash for RangeToInclusive<Idx> where
Idx: Hash,
impl<K, V> Hash for BTreeMap<K, V> where
K: Hash,
V: Hash,
impl<S: Hash, E: Hash, F: Hash> Hash for Outcome<S, E, F>
impl<T> Hash for Bound<T> where
T: Hash,
impl<T> Hash for Option<T> where
T: Hash,
impl<T> Hash for Reverse<T> where
T: Hash,
impl<T> Hash for BTreeSet<T> where
T: Hash,
impl<T> Hash for LinkedList<T> where
T: Hash,
impl<T> Hash for Discriminant<T>
impl<T> Hash for ManuallyDrop<T> where
T: Hash + ?Sized,
impl<T, A> Hash for Box<T, A> where
T: Hash + ?Sized,
A: Allocator,
impl<T, A> Hash for VecDeque<T, A> where
T: Hash,
A: Allocator,
impl<T, A> Hash for Vec<T, A> where
T: Hash,
A: Allocator,
The hash of a vector is the same as that of the corresponding slice,
as required by the core::borrow::Borrow
implementation.
#![feature(build_hasher_simple_hash_one)]
use std::hash::BuildHasher;
let b = std::collections::hash_map::RandomState::new();
let v: Vec<u8> = vec![0xa8, 0x3c, 0x09];
let s: &[u8] = &[0xa8, 0x3c, 0x09];
assert_eq!(b.hash_one(v), b.hash_one(s));
impl<T, E> Hash for Result<T, E> where
T: Hash,
E: Hash,
impl<T: Hash + Send + Sync + 'static> Hash for State<T>
impl<T: Hash> Hash for Lenient<T>
impl<T: Hash> Hash for Json<T>
json
only.impl<T: Hash> Hash for MsgPack<T>
msgpack
only.