1.0.0[−][src]Trait nom::lib::std::hash::Hash
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
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0
H: Hasher,
Implementations on Foreign Types
impl Hash for Path
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impl Hash for ErrorKind
[src]
impl<'_> Hash for PrefixComponent<'_>
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impl Hash for Instant
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impl Hash for CString
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impl Hash for FileType
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impl Hash for SocketAddrV4
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impl Hash for Ipv6MulticastScope
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impl Hash for SocketAddrV6
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impl Hash for Ipv4Addr
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impl Hash for PathBuf
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impl Hash for ThreadId
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impl Hash for SystemTime
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impl<'a> Hash for Prefix<'a>
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impl Hash for SocketAddr
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impl Hash for OsString
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impl<'a> Hash for Component<'a>
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impl Hash for IpAddr
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impl Hash for OsStr
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impl Hash for Ipv6Addr
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impl Hash for CStr
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impl Hash for i128
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fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
fn hash_slice<H>(data: &[i128], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl Hash for i32
[src]
fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
fn hash_slice<H>(data: &[i32], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl Hash for i8
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fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
fn hash_slice<H>(data: &[i8], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl Hash for isize
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fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
fn hash_slice<H>(data: &[isize], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl Hash for NonZeroU16
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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 Hash for str
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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<Ret, A, B> Hash for fn(A, B) -> Ret
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impl<T> Hash for PhantomData<T> where
T: ?Sized,
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T: ?Sized,
impl<Ret, A, B, C, D, E, F, G> Hash for extern "C" fn(A, B, C, D, E, F, G, VaListImpl) -> Ret
[src]
impl<Ret, A, B, C, D, E, F> Hash for fn(A, B, C, D, E, F) -> 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, VaListImpl) -> Ret
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impl<Ret, A, B, C, D> Hash for fn(A, B, C, D) -> Ret
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impl<Ret, A, B, C, D> Hash for extern "C" fn(A, B, C, D, VaListImpl) -> Ret
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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
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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, VaListImpl) -> 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, VaListImpl) -> Ret
[src]
impl<Ret, A, B, C, D, E, F, G> Hash for unsafe fn(A, B, C, D, E, F, G) -> Ret
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impl<T> Hash for *mut T where
T: ?Sized,
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T: ?Sized,
impl<Ret, A, B, C, D> Hash for unsafe fn(A, B, C, D) -> Ret
[src]
impl Hash for PhantomPinned
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impl<Ret, A, B> Hash for unsafe fn(A, B) -> 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, D, E, F, G, H, I> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret
[src]
impl Hash for NonZeroU128
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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 unsafe fn(A, B, C, D, E, F, G, H) -> Ret
[src]
impl Hash for NonZeroU8
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impl<Ret> Hash for unsafe fn() -> Ret
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impl Hash for NonZeroU64
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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,
[src]
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash,
J: Hash + ?Sized,
impl<Ret, A, B, C, D, E, F, G> Hash for extern "C" fn(A, B, C, D, E, F, G) -> Ret
[src]
impl<Ret> Hash for extern "C" fn() -> Ret
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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
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash + ?Sized,
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A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: 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
[src]
impl Hash for NonZeroIsize
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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, VaListImpl) -> Ret
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impl<Ret, A, B, C> Hash for extern "C" fn(A, B, C) -> Ret
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impl<Ret, A, B, C> Hash for unsafe extern "C" fn(A, B, C, VaListImpl) -> Ret
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impl<Ret, A, B, C, D, E, F, G, H> Hash for extern "C" fn(A, B, C, D, E, F, G, H, VaListImpl) -> Ret
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impl<Ret, A, B, C> Hash for unsafe fn(A, B, C) -> Ret
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impl<Ret, A, B> Hash for unsafe extern "C" fn(A, B, VaListImpl) -> Ret
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impl<A> Hash for (A,) where
A: Hash + ?Sized,
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A: Hash + ?Sized,
impl Hash for NonZeroI32
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impl<Ret> Hash for fn() -> Ret
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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 !
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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<'_, T> Hash for &'_ T where
T: Hash + ?Sized,
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T: Hash + ?Sized,
impl<Ret, A> Hash for unsafe fn(A) -> Ret
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impl Hash for ()
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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, 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, F, G, H, I> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, VaListImpl) -> Ret
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impl<Ret, A, B> Hash for unsafe extern "C" fn(A, B) -> 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<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
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impl Hash for TypeId
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impl<T> Hash for *const T where
T: ?Sized,
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T: ?Sized,
impl Hash for i64
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fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
fn hash_slice<H>(data: &[i64], state: &mut H) where
H: Hasher,
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H: Hasher,
impl Hash for Ordering
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impl<Ret, A, B, C, D, E> Hash for fn(A, B, C, D, E) -> Ret
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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,
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A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash + ?Sized,
impl<Ret, A> Hash for extern "C" fn(A) -> Ret
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impl<Ret, A, B, C, D, E> Hash for unsafe extern "C" fn(A, B, C, D, E, VaListImpl) -> Ret
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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, 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<T> Hash for NonNull<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> Hash for fn(A, B, C) -> Ret
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impl<Ret, A, B, C, D, E, F, G, H> Hash for fn(A, B, C, D, E, F, G, H) -> Ret
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impl<'_, T> Hash for &'_ mut T where
T: Hash + ?Sized,
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T: Hash + ?Sized,
impl Hash for u128
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fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
fn hash_slice<H>(data: &[u128], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
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 Hash for NonZeroI16
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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 NonZeroUsize
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impl Hash for NonZeroI64
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impl Hash for bool
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impl Hash for i16
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fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
fn hash_slice<H>(data: &[i16], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl Hash for NonZeroI8
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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,
[src]
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash,
I: Hash,
J: Hash,
K: Hash + ?Sized,
impl Hash for u32
[src]
fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
fn hash_slice<H>(data: &[u32], state: &mut H) where
H: Hasher,
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H: Hasher,
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> Hash for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, VaListImpl) -> Ret
[src]
impl<Ret, A, B, C, D> Hash for unsafe extern "C" fn(A, B, C, D) -> Ret
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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<T> Hash for [T] where
T: Hash,
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T: Hash,
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> Hash for fn(A) -> 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
[src]
impl Hash for NonZeroI128
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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, A> Hash for extern "C" fn(A, VaListImpl) -> Ret
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impl<const N: usize, T> Hash for [T; N] where
T: Hash,
[T; N]: LengthAtMost32,
[src]
T: Hash,
[T; N]: LengthAtMost32,
impl<Ret, A, B, C> Hash for extern "C" fn(A, B, C, VaListImpl) -> Ret
[src]
impl<T> Hash for Poll<T> where
T: Hash,
[src]
T: Hash,
impl<Ret, A, B, C, D, E, F> Hash for extern "C" fn(A, B, C, D, E, F, VaListImpl) -> Ret
[src]
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,
[src]
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash + ?Sized,
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 u16
[src]
fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
fn hash_slice<H>(data: &[u16], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl<Ret, A, B, C, D> Hash for unsafe extern "C" fn(A, B, C, D, VaListImpl) -> 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<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 Hash for usize
[src]
fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
fn hash_slice<H>(data: &[usize], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
impl Hash for u64
[src]
fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
fn hash_slice<H>(data: &[u64], state: &mut H) where
H: Hasher,
[src]
H: Hasher,
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,
[src]
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 Hash for char
[src]
impl<A, B, C, D> Hash for (A, B, C, D) where
A: Hash,
B: Hash,
C: Hash,
D: Hash + ?Sized,
[src]
A: Hash,
B: Hash,
C: Hash,
D: 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,
[src]
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash + ?Sized,
impl<A, B, C> Hash for (A, B, C) where
A: Hash,
B: Hash,
C: Hash + ?Sized,
[src]
A: Hash,
B: Hash,
C: Hash + ?Sized,
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, VaListImpl) -> Ret
[src]
impl<P> Hash for Pin<P> where
P: Hash,
[src]
P: Hash,
impl<Ret, A, B, C, D, E> Hash for extern "C" fn(A, B, C, D, E, VaListImpl) -> Ret
[src]
impl<Ret, A, B, C, D, E> Hash for unsafe fn(A, B, C, D, E) -> Ret
[src]
impl<Ret> Hash for unsafe extern "C" fn() -> Ret
[src]
impl Hash for Duration
[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, VaListImpl) -> Ret
[src]
impl Hash for u8
[src]
fn hash<H>(&self, state: &mut H) where
H: Hasher,
[src]
H: Hasher,
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> Hash for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, VaListImpl) -> 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, VaListImpl) -> Ret
[src]
impl<Ret, A, B> Hash for extern "C" fn(A, B) -> Ret
[src]
impl Hash for NonZeroU32
[src]
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,
[src]
A: Hash,
B: Hash,
C: Hash,
D: Hash,
E: Hash,
F: Hash,
G: Hash,
H: Hash + ?Sized,
impl<Ret, A, B> Hash for extern "C" fn(A, B, VaListImpl) -> 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, VaListImpl) -> Ret
[src]
impl<T> Hash for Wrapping<T> where
T: Hash,
[src]
T: Hash,
impl<Ret, A> Hash for unsafe extern "C" fn(A, VaListImpl) -> 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<Ret, A, B, C, D, E> Hash for extern "C" fn(A, B, C, D, E) -> Ret
[src]
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<T> Hash for Arc<T> where
T: Hash + ?Sized,
[src]
T: Hash + ?Sized,
impl<T> Hash for Rc<T> where
T: Hash + ?Sized,
[src]
T: Hash + ?Sized,
impl Hash for Match
impl<A> Hash for StackVec<A> where
A: Array,
<A as Array>::Item: Hash,
Loading content...
A: Array,
<A as Array>::Item: Hash,
Implementors
impl Hash for nom::error::ErrorKind
[src]
impl Hash for nom::lib::std::cmp::Ordering
[src]
impl Hash for Error
[src]
impl Hash for RangeFull
[src]
impl Hash for NoneError
[src]
impl Hash for String
[src]
impl<'_, B> Hash for Cow<'_, B> where
B: Hash + ToOwned + ?Sized,
[src]
B: Hash + ToOwned + ?Sized,
impl<A> Hash for VecDeque<A> where
A: Hash,
[src]
A: Hash,
impl<Idx> Hash for Range<Idx> where
Idx: Hash,
[src]
Idx: Hash,
impl<Idx> Hash for RangeFrom<Idx> where
Idx: Hash,
[src]
Idx: Hash,
impl<Idx> Hash for RangeInclusive<Idx> where
Idx: Hash,
[src]
Idx: Hash,
impl<Idx> Hash for RangeTo<Idx> where
Idx: Hash,
[src]
Idx: Hash,
impl<Idx> Hash for RangeToInclusive<Idx> where
Idx: Hash,
[src]
Idx: Hash,
impl<K, V> Hash for BTreeMap<K, V> where
K: Hash,
V: Hash,
[src]
K: Hash,
V: Hash,
impl<T> Hash for Bound<T> where
T: Hash,
[src]
T: Hash,
impl<T> Hash for Option<T> where
T: Hash,
[src]
T: Hash,
impl<T> Hash for Reverse<T> where
T: Hash,
[src]
T: Hash,
impl<T> Hash for LinkedList<T> where
T: Hash,
[src]
T: Hash,
impl<T> Hash for BTreeSet<T> where
T: Hash,
[src]
T: Hash,
impl<T> Hash for Discriminant<T>
[src]
impl<T> Hash for ManuallyDrop<T> where
T: Hash + ?Sized,
[src]
T: Hash + ?Sized,
impl<T> Hash for Box<T> where
T: Hash + ?Sized,
[src]
T: Hash + ?Sized,
impl<T> Hash for Vec<T> where
T: Hash,
[src]
T: Hash,
impl<T, E> Hash for Result<T, E> where
E: Hash,
T: Hash,
[src]
E: Hash,
T: Hash,
impl<Y, R> Hash for GeneratorState<Y, R> where
R: Hash,
Y: Hash,
[src]
R: Hash,
Y: Hash,