Function polars_plan::dsl::functions::cum_fold_exprs

source · 
pub fn cum_fold_exprs<F, E: AsRef<[Expr]>>(
    acc: Expr,
    f: F,
    exprs: E,
    include_init: bool
) -> Expr
where
    F: Fn(Series, Series) -> PolarsResult<Option<Series>> + Send + Sync + Clone + 'static,
Available on crate feature dtype-struct only.
Expand description

Accumulate over multiple columns horizontally / row wise.