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Struct std::collections::hash_map::DefaultHasher

pub struct DefaultHasher(/* private fields */);

The default Hasher used by RandomState.

The internal algorithm is not specified, and so it and its hashes should not be relied upon over releases.

Implementations

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impl DefaultHasher
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pub fn new() -> DefaultHasher

Creates a new DefaultHasher.

This hasher is not guaranteed to be the same as all other DefaultHasher instances, but is the same as all other DefaultHasher instances created through new or default.

Trait Implementations

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impl Clone for DefaultHasher
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fn clone(&self) -> DefaultHasher
Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source. Read more
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impl Debug for DefaultHasher
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fn fmt(&self, f: &mut Formatter<'_>) -> Result
Formats the value using the given formatter. Read more
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impl Default for DefaultHasher
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fn default() -> DefaultHasher

Creates a new DefaultHasher using new. See its documentation for more.

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impl Hasher for DefaultHasher
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fn write(&mut self, msg: &[u8])
Writes some data into this Hasher. Read more
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fn write_str(&mut self, s: &str)
🔬This is a nightly-only experimental API. (hasher_prefixfree_extras #96762)
Writes a single str into this hasher. Read more
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fn finish(&self) -> u64
Returns the hash value for the values written so far. Read more
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fn write_u8(&mut self, i: u8)
Writes a single u8 into this hasher.
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fn write_u16(&mut self, i: u16)
Writes a single u16 into this hasher.
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fn write_u32(&mut self, i: u32)
Writes a single u32 into this hasher.
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fn write_u64(&mut self, i: u64)
Writes a single u64 into this hasher.
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fn write_u128(&mut self, i: u128)
Writes a single u128 into this hasher.
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fn write_usize(&mut self, i: usize)
Writes a single usize into this hasher.
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fn write_i8(&mut self, i: i8)
Writes a single i8 into this hasher.
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fn write_i16(&mut self, i: i16)
Writes a single i16 into this hasher.
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fn write_i32(&mut self, i: i32)
Writes a single i32 into this hasher.
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fn write_i64(&mut self, i: i64)
Writes a single i64 into this hasher.
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fn write_i128(&mut self, i: i128)
Writes a single i128 into this hasher.
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fn write_isize(&mut self, i: isize)
Writes a single isize into this hasher.
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fn write_length_prefix(&mut self, len: usize)
🔬This is a nightly-only experimental API. (hasher_prefixfree_extras #96762)
Writes a length prefix into this hasher, as part of being prefix-free. Read more

Auto Trait Implementations

impl RefUnwindSafe for DefaultHasher
impl Send for DefaultHasher
impl Sync for DefaultHasher
impl Unpin for DefaultHasher
impl UnwindSafe for DefaultHasher

Blanket Implementations

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impl<T> Any for T
where
    T: 'static + ?Sized,
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fn type_id(&self) -> TypeId
Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where
    T: ?Sized,
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fn borrow(&self) -> &T
Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where
    T: ?Sized,
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fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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impl<T> From<T> for T
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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where
    U: From<T>,
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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where
    T: Clone,
 
type Owned = T
The resulting type after obtaining ownership.
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fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)
Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where
    U: Into<T>,
 
type Error = Infallible
The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
Performs the conversion.
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impl<T, U> TryInto<U> for T
where
    U: TryFrom<T>,
 
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
Performs the conversion.

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/collections/hash_map/struct.DefaultHasher.html