Trait tetsy_scale_info::prelude::hash::Hash 1.0.0[−][src]
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)]
.
Required methods
Loading content...Provided methods
pub fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
H: Hasher,
Implementations on Foreign Types
impl Hash for IpAddr
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impl Hash for OsString
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impl Hash for Path
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impl<'_> Hash for PrefixComponent<'_>
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impl Hash for SystemTime
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impl Hash for CString
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impl Hash for ErrorKind
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impl Hash for Instant
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impl Hash for Ipv6Addr
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impl Hash for Ipv6MulticastScope
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impl Hash for SocketAddrV6
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impl Hash for FileType
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impl Hash for ThreadId
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impl Hash for SocketAddr
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impl Hash for CStr
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impl Hash for SocketAddrV4
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impl<'a> Hash for Prefix<'a>
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impl Hash for Ipv4Addr
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impl Hash for PathBuf
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impl Hash for OsStr
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impl<'a> Hash for Component<'a>
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impl<'_, T> Hash for &'_ mut T where
T: Hash + ?Sized,
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T: Hash + ?Sized,
impl<Ret, A, B, C, D, E, F, G, H, I> Hash for fn(A, B, C, D, E, F, G, H, I) -> Ret
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impl Hash for Infallible
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impl<A, B, C, D, E, F, G, H, I> Hash for (A, B, C, D, E, F, G, H, I) where
C: Hash,
D: Hash,
F: Hash,
I: Hash + ?Sized,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash,
[src]
C: Hash,
D: Hash,
F: Hash,
I: Hash + ?Sized,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash,
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
[src]
impl<Ret, A, B, C, D, E, F> Hash for unsafe fn(A, B, C, D, E, F) -> Ret
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impl<Ret, A, B, C> Hash for unsafe extern "C" fn(A, B, C) -> Ret
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impl<Ret, A, B, C, D, E, F, G> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret
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impl<Ret, A, B, C, D, E> Hash for unsafe extern "C" fn(A, B, C, D, E, ...) -> Ret
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impl<Ret, A, B, C> Hash for unsafe extern "C" fn(A, B, C, ...) -> Ret
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impl Hash for !
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impl<Ret, A, B, C, D, E, F, G, H> Hash for unsafe fn(A, B, C, D, E, F, G, H) -> Ret
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impl<'_, T> Hash for &'_ T where
T: Hash + ?Sized,
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T: Hash + ?Sized,
impl Hash for i64
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pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
pub fn hash_slice<H>(data: &[i64], state: &mut H) where
H: Hasher,
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H: Hasher,
impl<Ret, A> Hash for extern "C" fn(A) -> Ret
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impl<T> Hash for *mut T where
T: ?Sized,
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T: ?Sized,
impl<Ret, A> Hash for unsafe extern "C" fn(A) -> Ret
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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
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impl<T> Hash for Poll<T> where
T: Hash,
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T: Hash,
impl<Ret, A, B, C, D, E, F, G> Hash for extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret
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impl<Ret, A, B, C, D, E, F> Hash for extern "C" fn(A, B, C, D, E, F, ...) -> Ret
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impl Hash for i8
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pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
pub fn hash_slice<H>(data: &[i8], state: &mut H) where
H: Hasher,
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H: Hasher,
impl<Ret, A, B, C, D, E> Hash for extern "C" fn(A, B, C, D, E) -> Ret
[src]
impl<Dyn> Hash for DynMetadata<Dyn> where
Dyn: ?Sized,
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Dyn: ?Sized,
impl<Ret, A, B, C, D> Hash for extern "C" fn(A, B, C, D) -> Ret
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impl<Ret> Hash for fn() -> Ret
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impl<Ret, A, B> Hash for fn(A, B) -> Ret
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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
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impl<A, B, C, D, E, F, G> Hash for (A, B, C, D, E, F, G) where
C: Hash,
D: Hash,
F: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash + ?Sized,
[src]
C: Hash,
D: Hash,
F: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash + ?Sized,
impl<A, B, C, D, E, F, G, H> Hash for (A, B, C, D, E, F, G, H) where
C: Hash,
D: Hash,
F: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash + ?Sized,
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C: Hash,
D: Hash,
F: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash + ?Sized,
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
[src]
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
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impl Hash for i32
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pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
pub fn hash_slice<H>(data: &[i32], state: &mut H) where
H: Hasher,
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H: Hasher,
impl<T> Hash for *const T where
T: ?Sized,
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T: ?Sized,
impl Hash for i16
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pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
pub fn hash_slice<H>(data: &[i16], state: &mut H) where
H: Hasher,
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H: Hasher,
impl<Ret, A, B, C, D> Hash for extern "C" fn(A, B, C, D, ...) -> Ret
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impl<Ret, A, B, C, D, E, F, G> Hash for fn(A, B, C, D, E, F, G) -> Ret
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impl<Ret, A, B, C> Hash for fn(A, B, C) -> Ret
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impl<A, B> Hash for (A, B) where
A: Hash,
B: Hash + ?Sized,
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A: Hash,
B: Hash + ?Sized,
impl Hash for i128
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pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
pub fn hash_slice<H>(data: &[i128], state: &mut H) where
H: Hasher,
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H: Hasher,
impl<Ret, A, B, C, D, E, F, G, H> Hash for fn(A, B, C, D, E, F, G, H) -> Ret
[src]
impl Hash for Duration
[src]
impl<T, const N: usize> Hash for [T; N] where
T: Hash,
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T: Hash,
impl<A, B, C, D, E, F> Hash for (A, B, C, D, E, F) where
C: Hash,
D: Hash,
F: Hash + ?Sized,
A: Hash,
B: Hash,
E: Hash,
[src]
C: Hash,
D: Hash,
F: Hash + ?Sized,
A: Hash,
B: Hash,
E: Hash,
impl<T, E> Hash for Result<T, E> where
T: Hash,
E: Hash,
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T: Hash,
E: Hash,
impl Hash for u32
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pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
pub fn hash_slice<H>(data: &[u32], state: &mut H) where
H: Hasher,
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H: Hasher,
impl<Ret, A, B, C> Hash for extern "C" fn(A, B, C, ...) -> Ret
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impl<Ret, A, B, C, D, E, F> Hash for unsafe extern "C" fn(A, B, C, D, E, F, ...) -> Ret
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impl<A, B, C, D> Hash for (A, B, C, D) where
C: Hash,
D: Hash + ?Sized,
A: Hash,
B: Hash,
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C: Hash,
D: Hash + ?Sized,
A: Hash,
B: Hash,
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
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impl<Ret, A> Hash for fn(A) -> Ret
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impl Hash for NoneError
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impl<Idx> Hash for RangeFrom<Idx> where
Idx: Hash,
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Idx: Hash,
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
C: Hash,
D: Hash,
F: Hash,
I: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash,
J: Hash,
K: Hash + ?Sized,
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C: Hash,
D: Hash,
F: Hash,
I: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash,
J: Hash,
K: Hash + ?Sized,
impl<Idx> Hash for RangeToInclusive<Idx> where
Idx: Hash,
[src]
Idx: Hash,
impl<Ret, A> Hash for unsafe fn(A) -> Ret
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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
C: Hash,
D: Hash,
F: Hash,
I: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash,
J: Hash,
K: Hash,
L: Hash + ?Sized,
[src]
C: Hash,
D: Hash,
F: Hash,
I: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash,
J: Hash,
K: Hash,
L: Hash + ?Sized,
impl<P> Hash for Pin<P> where
P: Deref,
<P as Deref>::Target: Hash,
[src]
P: Deref,
<P as Deref>::Target: Hash,
impl<Ret, A, B, C, D> Hash for unsafe extern "C" fn(A, B, C, D, ...) -> Ret
[src]
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
[src]
impl<Ret> Hash for extern "C" fn() -> Ret
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impl Hash for u64
[src]
pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
pub fn hash_slice<H>(data: &[u64], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl<Ret, A, B, C, D, E, F, G, H> Hash for extern "C" fn(A, B, C, D, E, F, G, H) -> Ret
[src]
impl<Idx> Hash for Range<Idx> where
Idx: Hash,
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Idx: Hash,
impl Hash for u128
[src]
pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
pub fn hash_slice<H>(data: &[u128], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl<Idx> Hash for RangeInclusive<Idx> where
Idx: Hash,
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Idx: Hash,
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
[src]
impl<Ret, A, B, C, D, E, F, G> Hash for extern "C" fn(A, B, C, D, E, F, G) -> Ret
[src]
impl Hash for RangeFull
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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
[src]
impl<Ret, A, B> Hash for extern "C" fn(A, B, ...) -> Ret
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impl<Ret, A, B, C> Hash for unsafe fn(A, B, C) -> Ret
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impl Hash for u8
[src]
pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
pub fn hash_slice<H>(data: &[u8], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
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
[src]
impl<Ret> Hash for unsafe extern "C" fn() -> Ret
[src]
impl<Ret, A, B, C, D, E> Hash for unsafe fn(A, B, C, D, E) -> Ret
[src]
impl<Ret, A, B, C, D, E, F, G> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret
[src]
impl Hash for u16
[src]
pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
pub fn hash_slice<H>(data: &[u16], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
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
[src]
impl<Ret> Hash for unsafe fn() -> Ret
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impl<A> Hash for (A,) where
A: Hash + ?Sized,
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A: Hash + ?Sized,
impl<Ret, A, B> Hash for unsafe extern "C" fn(A, B, ...) -> Ret
[src]
impl<Ret, A, B, C> Hash for extern "C" fn(A, B, C) -> Ret
[src]
impl<Ret, A, B, C, D, E> Hash for unsafe extern "C" fn(A, B, C, D, E) -> Ret
[src]
impl<Ret, A, B, C, D, E> Hash for extern "C" fn(A, B, C, D, E, ...) -> Ret
[src]
impl<A, B, C> Hash for (A, B, C) where
C: Hash + ?Sized,
A: Hash,
B: Hash,
[src]
C: Hash + ?Sized,
A: Hash,
B: Hash,
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
[src]
impl<Ret, A, B> Hash for unsafe extern "C" fn(A, B) -> Ret
[src]
impl<T> Hash for Option<T> where
T: Hash,
[src]
T: Hash,
impl<Ret, A, B, C, D, E, F> Hash 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> Hash for 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> Hash for unsafe fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
[src]
impl<T> Hash for NonNull<T> where
T: ?Sized,
[src]
T: ?Sized,
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
[src]
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
[src]
impl<A, B, C, D, E, F, G, H, I, J> Hash for (A, B, C, D, E, F, G, H, I, J) where
C: Hash,
D: Hash,
F: Hash,
I: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash,
J: Hash + ?Sized,
[src]
C: Hash,
D: Hash,
F: Hash,
I: Hash,
A: Hash,
B: Hash,
E: Hash,
G: Hash,
H: Hash,
J: Hash + ?Sized,
impl<Ret, A> Hash for extern "C" fn(A, ...) -> Ret
[src]
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
[src]
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
[src]
impl<A, B, C, D, E> Hash for (A, B, C, D, E) where
C: Hash,
D: Hash,
A: Hash,
B: Hash,
E: Hash + ?Sized,
[src]
C: Hash,
D: Hash,
A: Hash,
B: Hash,
E: Hash + ?Sized,
impl Hash for Ordering
[src]
impl<Ret, A, B, C, D> Hash for unsafe fn(A, B, C, D) -> Ret
[src]
impl<Ret, A, B> Hash for extern "C" fn(A, B) -> Ret
[src]
impl<Ret, A, B, C, D> Hash for unsafe extern "C" fn(A, B, C, D) -> Ret
[src]
impl<Ret, A, B, C, D, E, F> Hash for fn(A, B, C, D, E, F) -> Ret
[src]
impl<Y, R> Hash for GeneratorState<Y, R> where
R: Hash,
Y: Hash,
[src]
R: Hash,
Y: Hash,
impl<Ret, A, B, C, D, E, F> Hash for extern "C" fn(A, B, C, D, E, F) -> Ret
[src]
impl Hash for ()
[src]
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
[src]
impl Hash for str
[src]
impl Hash for char
[src]
impl Hash for isize
[src]
pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
pub fn hash_slice<H>(data: &[isize], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
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
[src]
impl<Ret, A, B, C, D, E, F, G, H> Hash for 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, K, L> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret
[src]
impl<Ret, A, B, C, D, E> Hash for fn(A, B, C, D, E) -> Ret
[src]
impl<Ret, A, B, C, D, E, F, G> Hash for unsafe fn(A, B, C, D, E, F, G) -> Ret
[src]
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
[src]
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
[src]
impl<Ret, A, B, C, D> Hash for fn(A, B, C, D) -> Ret
[src]
impl<Ret, A, B> Hash for unsafe fn(A, B) -> Ret
[src]
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
[src]
impl<Idx> Hash for RangeTo<Idx> where
Idx: Hash,
[src]
Idx: Hash,
impl<Ret, A> Hash for unsafe extern "C" fn(A, ...) -> Ret
[src]
impl<'a> Hash for Location<'a>
[src]
impl<T> Hash for [T] where
T: Hash,
[src]
T: Hash,
impl Hash for bool
[src]
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
[src]
impl Hash for usize
[src]
pub fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
pub fn hash_slice<H>(data: &[usize], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl<'_, B> Hash for Cow<'_, B> where
B: Hash + ToOwned + ?Sized,
[src]
B: Hash + ToOwned + ?Sized,
impl<T> Hash for Rc<T> where
T: Hash + ?Sized,
[src]
T: Hash + ?Sized,
impl<T> Hash for Arc<T> where
T: Hash + ?Sized,
[src]
T: Hash + ?Sized,
impl<A> Hash for ArrayString<A> where
A: Array<Item = u8> + Copy,
[src]
A: Array<Item = u8> + Copy,
impl<A> Hash for ArrayVec<A> where
A: Array,
<A as Array>::Item: Hash,
[src]
Loading content...A: Array,
<A as Array>::Item: Hash,
Implementors
impl Hash for tetsy_scale_info::prelude::cmp::Ordering
[src]
impl Hash for TypeId
[src]
impl Hash for Error
[src]
impl Hash for PhantomPinned
1.33.0[src]
impl Hash for NonZeroI8
1.34.0[src]
impl Hash for NonZeroI16
1.34.0[src]
impl Hash for NonZeroI32
1.34.0[src]
impl Hash for NonZeroI64
1.34.0[src]
impl Hash for NonZeroI128
1.34.0[src]
impl Hash for NonZeroIsize
1.34.0[src]
impl Hash for NonZeroU8
1.28.0[src]
impl Hash for NonZeroU16
1.28.0[src]
impl Hash for NonZeroU32
1.28.0[src]
impl Hash for NonZeroU64
1.28.0[src]
impl Hash for NonZeroU128
1.28.0[src]
impl Hash for NonZeroUsize
1.28.0[src]
impl Hash for String
[src]
impl Hash for MetaType
[src]
impl<A> Hash for VecDeque<A> where
A: Hash,
[src]
A: Hash,
impl<K, V> Hash for BTreeMap<K, V> where
V: Hash,
K: Hash,
[src]
V: Hash,
K: Hash,
impl<T> Hash for Bound<T> where
T: Hash,
1.17.0[src]
T: Hash,
impl<T> Hash for Reverse<T> where
T: Hash,
1.19.0[src]
T: Hash,
impl<T> Hash for BTreeSet<T> where
T: Hash,
[src]
T: Hash,
impl<T> Hash for LinkedList<T> where
T: Hash,
[src]
T: Hash,
impl<T> Hash for PhantomData<T> where
T: ?Sized,
[src]
T: ?Sized,
impl<T> Hash for Discriminant<T>
1.21.0[src]
impl<T> Hash for ManuallyDrop<T> where
T: Hash + ?Sized,
1.20.0[src]
T: Hash + ?Sized,
impl<T> Hash for Wrapping<T> where
T: Hash,
[src]
T: Hash,
impl<T, A> Hash for Box<T, A> where
T: Hash + ?Sized,
A: Allocator,
[src]
T: Hash + ?Sized,
A: Allocator,
impl<T, A> Hash for Vec<T, A> where
T: Hash,
A: Allocator,
[src]
T: Hash,
A: Allocator,