Struct polars_lazy::dsl::ChainedThen

pub struct ChainedThen { /* private fields */ }

Utility struct for the when-then-otherwise expression.

Represents the state of the expression after an additional then is called.

Implementations

impl ChainedThen

pub fn when<E>(self, condition: E) -> ChainedWhen

where E: Into<Expr>,

Add another condition to the when-then-otherwise expression.

pub fn otherwise<E>(self, expr: E) -> Expr

where E: Into<Expr>,

Define a default for the when-then-otherwise expression.

Trait Implementations

impl Clone for ChainedThen

fn clone(&self) -> ChainedThen

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.