](../../expressions/api/polars.Expr.sum.html)
      * [ polars.Expr.var ](../../expressions/api/polars.Expr.var.html)
    * [ Array ](../../expressions/array.html) __
      * [ polars.Expr.arr.max ](../../expressions/api/polars.Expr.arr.max.html)
      * [ polars.Expr.arr.min ](../../expressions/api/polars.Expr.arr.min.html)
      * [ polars.Expr.arr.median ](../../expressions/api/polars.Expr.arr.median.html)
      * [ polars.Expr.arr.sum ](../../expressions/api/polars.Expr.arr.sum.html)
      * [ polars.Expr.arr.std ](../../expressions/api/polars.Expr.arr.std.html)
      * [ polars.Expr.arr.to_list ](../../expressions/api/polars.Expr.arr.to_list.html)
      * [ polars.Expr.arr.unique ](../../expressions/api/polars.Expr.arr.unique.html)
      * [ polars.Expr.arr.n_unique ](../../expressions/api/polars.Expr.arr.n_unique.html)
      * [ polars.Expr.arr.var ](../../expressions/api/polars.Expr.arr.var.html)
      * [ polars.Expr.arr.all ](../../expressions/api/polars.Expr.arr.all.html)
      * [ polars.Expr.arr.any ](../../expressions/api/polars.Expr.arr.any.html)
      * [ polars.Expr.arr.sort ](../../expressions/api/polars.Expr.arr.sort.html)
      * [ polars.Expr.arr.reverse ](../../expressions/api/polars.Expr.arr.reverse.html)
      * [ polars.Expr.arr.arg_min ](../../expressions/api/polars.Expr.arr.arg_min.html)
      * [ polars.Expr.arr.arg_max ](../../expressions/api/polars.Expr.arr.arg_max.html)
      * [ polars.Expr.arr.get ](../../expressions/api/polars.Expr.arr.get.html)
      * [ polars.Expr.arr.first ](../../expressions/api/polars.Expr.arr.first.html)
      * [ polars.Expr.arr.last ](../../expressions/api/polars.Expr.arr.last.html)
      * [ polars.Expr.arr.join ](../../expressions/api/polars.Expr.arr.join.html)
      * [ polars.Expr.arr.explode ](../../expressions/api/polars.Expr.arr.explode.html)
      * [ polars.Expr.arr.contains ](../../expressions/api/polars.Expr.arr.contains.html)
      * [ polars.Expr.arr.count_matches ](../../expressions/api/polars.Expr.arr.count_matches.html)
      * [ polars.Expr.arr.to_struct ](../../expressions/api/polars.Expr.arr.to_struct.html)
      * [ polars.Expr.arr.shift ](../../expressions/api/polars.Expr.arr.shift.html)
    * [ Binary ](../../expressions/binary.html) __
      * [ polars.Expr.bin.contains ](../../expressions/api/polars.Expr.bin.contains.html)
      * [ polars.Expr.bin.decode ](../../expressions/api/polars.Expr.bin.decode.html)
      * [ polars.Expr.bin.encode ](../../expressions/api/polars.Expr.bin.encode.html)
      * [ polars.Expr.bin.ends_with ](../../expressions/api/polars.Expr.bin.ends_with.html)
      * [ polars.Expr.bin.starts_with ](../../expressions/api/polars.Expr.bin.starts_with.html)
    * [ Boolean ](../../expressions/boolean.html) __
      * [ polars.Expr.all ](../../expressions/api/polars.Expr.all.html)
      * [ polars.Expr.any ](../../expressions/api/polars.Expr.any.html)
      * [ polars.Expr.is_between ](../../expressions/api/polars.Expr.is_between.html)
      * [ polars.Expr.is_duplicated ](../../expressions/api/polars.Expr.is_duplicated.html)
      * [ polars.Expr.is_finite ](../../expressions/api/polars.Expr.is_finite.html)
      * [ polars.Expr.is_first ](../../expressions/api/polars.Expr.is_first.html)
      * [ polars.Expr.is_first_distinct ](../../expressions/api/polars.Expr.is_first_distinct.html)
      * [ polars.Expr.is_in ](../../expressions/api/polars.Expr.is_in.html)
      * [ polars.Expr.is_infinite ](../../expressions/api/polars.Expr.is_infinite.html)
      * [ polars.Expr.is_last ](../../expressions/api/polars.Expr.is_last.html)
      * [ polars.Expr.is_last_distinct ](../../expressions/api/polars.Expr.is_last_distinct.html)
      * [ polars.Expr.is_nan ](../../expressions/api/polars.Expr.is_nan.html)
      * [ polars.Expr.is_not ](../../expressions/api/polars.Expr.is_not.html)
      * [ polars.Expr.is_not_nan ](../../expressions/api/polars.Expr.is_not_nan.html)
      * [ polars.Expr.is_not_null ](../../expressions/api/polars.Exp