Struct polars_core::IUseStringCache

pub struct IUseStringCache { /* private fields */ }

Available on crate feature dtype-categorical only.

RAII for the string cache If an operation creates categoricals and uses them in a join or comparison that operation must hold this cache via let handle = IUseStringCache::hold() The cache is valid 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 IUseStringCache

pub fn hold() -> IUseStringCache

Hold the StringCache

Trait Implementations

impl Default for IUseStringCache

fn default() -> Self

Returns the “default value” for a type.

impl Drop for IUseStringCache

fn drop(&mut self)

Executes the destructor for this type.