Function polars::prelude::map_binary [−][src]
pub fn map_binary<F>(
a: Expr,
b: Expr,
f: F,
output_field: Option<Field>
) -> Expr where
F: 'static + Fn(Series, Series) -> Result<Series, PolarsError> + Send + Sync,
Expand description
Apply a closure on the two columns that are evaluated from Expr
a and Expr
b.