rs.count ](../../expressions/api/polars.count.html)
      * [ polars.cov ](../../expressions/api/polars.cov.html)
      * [ polars.cum_count ](../../expressions/api/polars.cum_count.html)
      * [ polars.cum_fold ](../../expressions/api/polars.cum_fold.html)
      * [ polars.cum_reduce ](../../expressions/api/polars.cum_reduce.html)
      * [ polars.cum_sum ](../../expressions/api/polars.cum_sum.html)
      * [ polars.cum_sum_horizontal ](../../expressions/api/polars.cum_sum_horizontal.html)
      * [ polars.cumfold ](../../expressions/api/polars.cumfold.html)
      * [ polars.cumreduce ](../../expressions/api/polars.cumreduce.html)
      * [ polars.cumsum ](../../expressions/api/polars.cumsum.html)
      * [ polars.cumsum_horizontal ](../../expressions/api/polars.cumsum_horizontal.html)
      * [ polars.date ](../../expressions/api/polars.date.html)
      * [ polars.datetime ](../../expressions/api/polars.datetime.html)
      * [ polars.date_range ](../../expressions/api/polars.date_range.html)
      * [ polars.date_ranges ](../../expressions/api/polars.date_ranges.html)
      * [ polars.datetime_range ](../../expressions/api/polars.datetime_range.html)
      * [ polars.datetime_ranges ](../../expressions/api/polars.datetime_ranges.html)
      * [ polars.duration ](../../expressions/api/polars.duration.html)
      * [ polars.element ](../../expressions/api/polars.element.html)
      * [ polars.exclude ](../../expressions/api/polars.exclude.html)
      * [ polars.first ](../../expressions/api/polars.first.html)
      * [ polars.fold ](../../expressions/api/polars.fold.html)
      * [ polars.format ](../../expressions/api/polars.format.html)
      * [ polars.from_epoch ](../../expressions/api/polars.from_epoch.html)
      * [ polars.groups ](../../expressions/api/polars.groups.html)
      * [ polars.head ](../../expressions/api/polars.head.html)
      * [ polars.implode ](../../expressions/api/polars.implode.html)
      * [ polars.int_range ](../../expressions/api/polars.int_range.html)
      * [ polars.int_ranges ](../../expressions/api/polars.int_ranges.html)
      * [ polars.last ](../../expressions/api/polars.last.html)
      * [ polars.len ](../../expressions/api/polars.len.html)
      * [ polars.lit ](../../expressions/api/polars.lit.html)
      * [ polars.map ](../../expressions/api/polars.map.html)
      * [ polars.map_batches ](../../expressions/api/polars.map_batches.html)
      * [ polars.map_groups ](../../expressions/api/polars.map_groups.html)
      * [ polars.max ](../../expressions/api/polars.max.html)
      * [ polars.max_horizontal ](../../expressions/api/polars.max_horizontal.html)
      * [ polars.mean ](../../expressions/api/polars.mean.html)
      * [ polars.mean_horizontal ](../../expressions/api/polars.mean_horizontal.html)
      * [ polars.median ](../../expressions/api/polars.median.html)
      * [ polars.min ](../../expressions/api/polars.min.html)
      * [ polars.min_horizontal ](../../expressions/api/polars.min_horizontal.html)
      * [ polars.n_unique ](../../expressions/api/polars.n_unique.html)
      * [ polars.ones ](../../expressions/api/polars.ones.html)
      * [ polars.quantile ](../../expressions/api/polars.quantile.html)
      * [ polars.reduce ](../../expressions/api/polars.reduce.html)
      * [ polars.repeat ](../../expressions/api/polars.repeat.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)