Function polars_lazy::dsl::map_binary

pub fn map_binary<F: 'static>(
    a: Expr, 
    b: Expr, 
    f: F, 
    output_field: Option<Field>
) -> Expr where
    F: Fn(Series, Series) -> Result<Series> + Send + Sync, 

This is supported on crate feature compile only.

Apply a closure on the two columns that are evaluated from Expr a and Expr b.