Struct polars_utils::arena::Arena

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pub struct Arena<T> { /* private fields */ }

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impl<T> Arena<T>

Simple Arena implementation Allocates memory and stores item in a Vec. Only deallocates when being dropped itself.

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pub fn add(&mut self, val: T) -> Node

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pub fn pop(&mut self) -> Option<T>

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pub fn len(&self) -> usize

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pub fn is_empty(&self) -> bool

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pub fn new() -> Self

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pub fn with_capacity(cap: usize) -> Self

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pub fn get_node(&self, val: &T) -> Option<Node>

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pub fn swap(&mut self, idx_a: Node, idx_b: Node)

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pub fn get(&self, idx: Node) -> &T

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pub unsafe fn get_unchecked(&self, idx: Node) -> &T

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Doesn’t do any bound checks

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pub fn get_mut(&mut self, idx: Node) -> &mut T

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pub fn replace(&mut self, idx: Node, val: T)

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pub fn clear(&mut self)

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impl<T: Default> Arena<T>

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pub fn take(&mut self, idx: Node) -> T

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pub fn replace_with<F>(&mut self, idx: Node, f: F)
where F: FnOnce(T) -> T,

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pub fn try_replace_with<F>( &mut self, idx: Node, f: F ) -> Result<(), PolarsUtilsError>
where F: FnMut(T) -> Result<T, PolarsUtilsError>,

Trait Implementations§

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impl<T: Clone> Clone for Arena<T>

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fn clone(&self) -> Arena<T>

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<T> Default for Arena<T>

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fn default() -> Self

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

Auto Trait Implementations§

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impl<T> Freeze for Arena<T>

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impl<T> RefUnwindSafe for Arena<T>
where T: RefUnwindSafe,

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impl<T> Send for Arena<T>
where T: Send,

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impl<T> Sync for Arena<T>
where T: Sync,

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impl<T> Unpin for Arena<T>
where T: Unpin,

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impl<T> UnwindSafe for Arena<T>
where T: UnwindSafe,

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> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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.