Struct polars::datatypes::categorical::string_cache::StringCacheHolder

pub struct StringCacheHolder { /* private fields */ }

Available on crate feature dtype-categorical only.

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

impl StringCacheHolder

pub fn hold() -> StringCacheHolder

Hold the StringCache

Trait Implementations

impl Default for StringCacheHolder

fn default() -> StringCacheHolder

Returns the “default value” for a type.

impl Drop for StringCacheHolder

fn drop(&mut self)

Executes the destructor for this type.