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OpenHashMap

Struct OpenHashMap 

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pub struct OpenHashMap { /* private fields */ }
Expand description

An open-addressing hash map with linear probing (i64 → i64).

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impl OpenHashMap

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pub fn new() -> Self

Create a new hash map with default capacity.

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pub fn with_capacity(cap: usize) -> Self

Create with a specific initial capacity.

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pub fn insert(&mut self, key: i64, value: i64)

Insert or overwrite a key-value pair.

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pub fn get(&self, key: i64) -> Option<i64>

Look up a key.

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pub fn contains(&self, key: i64) -> bool

Check if a key exists.

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pub fn remove(&mut self, key: i64) -> bool

Remove a key. Returns true if it existed.

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pub fn len(&self) -> usize

Number of live entries.

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pub fn is_empty(&self) -> bool

Returns true if empty.

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pub fn load_factor(&self) -> f32

Load factor (live + deleted / capacity).

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pub fn pairs(&self) -> Vec<(i64, i64)>

Collect all (key, value) pairs.

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impl Clone for OpenHashMap

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fn clone(&self) -> OpenHashMap

Returns a duplicate 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 OpenHashMap

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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 OpenHashMap

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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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>,

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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>,

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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.