Struct StringCacheHolder

Source

pub struct StringCacheHolder { /* private fields */ }

Expand description

Enable the global string cache as long as the object is alive (RAII).

§Examples

Enable the string cache by initializing the object:

use polars_core::StringCacheHolder;

let _sc = StringCacheHolder::hold();

The string cache is enabled until handle is dropped.

§De-allocation

Multiple threads can hold the string cache at the same time. The contents of the cache will only get dropped when no thread holds it.

Implementations§

Source §

impl StringCacheHolder

Source

pub fn hold() -> StringCacheHolder

Hold the StringCache

Trait Implementations§

Source §

impl Default for StringCacheHolder

Source §

fn default() -> StringCacheHolder

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

Source §

impl Drop for StringCacheHolder

Source §

fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations§

§

impl UnwindSafe for StringCacheHolder

Blanket Implementations§

Source §

impl<T> Any for T
where T: 'static + ?Sized,

Source §

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

Source §

impl<T> Borrow<T> for T
where T: ?Sized,

Source §

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

Source §

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source §

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

Source §

impl<T> From<T> for T

Source §

fn from(t: T) -> T

Returns the argument unchanged.

§

impl<T> Instrument for T

§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Source §

impl<T, U> Into for T
where U: From<T>,

Source §

fn into(self) -> U

Calls U::from(self).

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

Source §

impl<T> IntoEither for T

Source §

fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

Source §

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

§