at.html)
      * [ polars.rolling_corr ](../../expressions/api/polars.rolling_corr.html)
      * [ polars.rolling_cov ](../../expressions/api/polars.rolling_cov.html)
      * [ polars.select ](../../expressions/api/polars.select.html)
      * [ polars.std ](../../expressions/api/polars.std.html)
      * [ polars.struct ](../../expressions/api/polars.struct.html)
      * [ polars.sum ](../../expressions/api/polars.sum.html)
      * [ polars.sum_horizontal ](../../expressions/api/polars.sum_horizontal.html)
      * [ polars.sql_expr ](../../expressions/api/polars.sql_expr.html)
      * [ polars.tail ](../../expressions/api/polars.tail.html)
      * [ polars.time ](../../expressions/api/polars.time.html)
      * [ polars.time_range ](../../expressions/api/polars.time_range.html)
      * [ polars.time_ranges ](../../expressions/api/polars.time_ranges.html)
      * [ polars.var ](../../expressions/api/polars.var.html)
      * [ polars.when ](../../expressions/api/polars.when.html)
      * [ polars.zeros ](../../expressions/api/polars.zeros.html)
      * [ polars.Expr.all ](../../expressions/api/polars.Expr.all.html)
      * [ polars.Expr.any ](../../expressions/api/polars.Expr.any.html)
      * [ polars.Expr.apply ](../../expressions/api/polars.Expr.apply.html)
      * [ polars.Expr.approx_n_unique ](../../expressions/api/polars.Expr.approx_n_unique.html)
      * [ polars.Expr.count ](../../expressions/api/polars.Expr.count.html)
      * [ polars.Expr.cumsum ](../../expressions/api/polars.Expr.cumsum.html)
      * [ polars.Expr.exclude ](../../expressions/api/polars.Expr.exclude.html)
      * [ polars.Expr.first ](../../expressions/api/polars.Expr.first.html)
      * [ polars.Expr.head ](../../expressions/api/polars.Expr.head.html)
      * [ polars.Expr.implode ](../../expressions/api/polars.Expr.implode.html)
      * [ polars.Expr.map ](../../expressions/api/polars.Expr.map.html)
      * [ polars.Expr.map_batches ](../../expressions/api/polars.Expr.map_batches.html)
      * [ polars.Expr.map_elements ](../../expressions/api/polars.Expr.map_elements.html)
      * [ polars.Expr.max ](../../expressions/api/polars.Expr.max.html)
      * [ polars.Expr.mean ](../../expressions/api/polars.Expr.mean.html)
      * [ polars.Expr.median ](../../expressions/api/polars.Expr.median.html)
      * [ polars.Expr.min ](../../expressions/api/polars.Expr.min.html)
      * [ polars.Expr.n_unique ](../../expressions/api/polars.Expr.n_unique.html)
      * [ polars.Expr.quantile ](../../expressions/api/polars.Expr.quantile.html)
      * [ polars.Expr.std ](../../expressions/api/polars.Expr.std.html)
      * [ polars.Expr.sum ](../../expressions/api/polars.Expr.sum.html)
      * [ polars.Expr.tail ](../../expressions/api/polars.Expr.tail.html)
      * [ polars.Expr.var ](../../expressions/api/polars.Expr.var.html)
    * [ List ](../../expressions/list.html) __
      * [ polars.Expr.list.all ](../../expressions/api/polars.Expr.list.all.html)
      * [ polars.Expr.list.any ](../../expressions/api/polars.Expr.list.any.html)
      * [ polars.Expr.list.drop_nulls ](../../expressions/api/polars.Expr.list.drop_nulls.html)
      * [ polars.Expr.list.arg_max ](../../expressions/api/polars.Expr.list.arg_max.html)
      * [ polars.Expr.list.arg_min ](../../expressions/api/polars.Expr.list.arg_min.html)
      * [ polars.Expr.list.concat ](../../expressions/api/polars.Expr.list.concat.html)
      * [ polars.Expr.list.contains ](../../expressions/api/polars.Expr.list.contains.html)
      * [ polars.Expr.list.count_match ](../../expressions/api/polars.Expr.list.count_match.html)
      * [ polars.Expr.list.count_matches ](../../expressions/api/polars.Expr.list.count_matches.html)
      * [ polars.Expr.list.diff ](../../expressions/api/polars.Expr.list.diff.html)
      * [ polars.Expr.list.eval ](../../expressions/api/polars.Expr.list.eval.html)
      * [ polars.Expr.list.explode ](../../expressions/api/polars.Expr.list.explode.html)
      * [ polars.Expr.list.first ](../