und.html)
      * [ polars.Expr.map_dict ](polars.Expr.map_dict.html)
      * [ polars.Expr.pipe ](polars.Expr.pipe.html)
      * [ polars.Expr.qcut ](polars.Expr.qcut.html)
      * [ polars.Expr.rechunk ](polars.Expr.rechunk.html)
      * [ polars.Expr.reinterpret ](polars.Expr.reinterpret.html)
      * [ polars.Expr.repeat_by ](polars.Expr.repeat_by.html)
      * [ polars.Expr.replace ](polars.Expr.replace.html)
      * [ polars.Expr.reshape ](polars.Expr.reshape.html)
      * [ polars.Expr.reverse ](polars.Expr.reverse.html)
      * [ polars.Expr.rle ](polars.Expr.rle.html)
      * [ polars.Expr.rle_id ](polars.Expr.rle_id.html)
      * [ polars.Expr.round ](polars.Expr.round.html)
      * [ polars.Expr.round_sig_figs ](polars.Expr.round_sig_figs.html)
      * [ polars.Expr.sample ](polars.Expr.sample.html)
      * [ polars.Expr.shift ](polars.Expr.shift.html)
      * [ polars.Expr.shift_and_fill ](polars.Expr.shift_and_fill.html)
      * [ polars.Expr.shrink_dtype ](polars.Expr.shrink_dtype.html)
      * [ polars.Expr.shuffle ](polars.Expr.shuffle.html)
      * [ polars.Expr.slice ](polars.Expr.slice.html)
      * [ polars.Expr.sort ](polars.Expr.sort.html)
      * [ polars.Expr.sort_by ](polars.Expr.sort_by.html)
      * [ polars.Expr.tail ](polars.Expr.tail.html)
      * [ polars.Expr.take ](polars.Expr.take.html)
      * [ polars.Expr.take_every ](polars.Expr.take_every.html)
      * [ polars.Expr.to_physical ](polars.Expr.to_physical.html)
      * [ polars.Expr.top_k ](polars.Expr.top_k.html)
      * [ polars.Expr.upper_bound ](polars.Expr.upper_bound.html)
      * [ polars.Expr.where ](polars.Expr.where.html)
    * [ Meta ](../meta.html) __
      * [ polars.Expr.meta.eq ](polars.Expr.meta.eq.html)
      * [ polars.Expr.meta.has_multiple_outputs ](polars.Expr.meta.has_multiple_outputs.html)
      * [ polars.Expr.meta.is_regex_projection ](polars.Expr.meta.is_regex_projection.html)
      * [ polars.Expr.meta.ne ](polars.Expr.meta.ne.html)
      * [ polars.Expr.meta.output_name ](polars.Expr.meta.output_name.html)
      * [ polars.Expr.meta.pop ](polars.Expr.meta.pop.html)
      * [ polars.Expr.meta.tree_format ](polars.Expr.meta.tree_format.html)
      * [ polars.Expr.meta.root_names ](polars.Expr.meta.root_names.html)
      * [ polars.Expr.meta.serialize ](polars.Expr.meta.serialize.html)
      * [ polars.Expr.meta.undo_aliases ](polars.Expr.meta.undo_aliases.html)
      * [ polars.Expr.meta.write_json ](polars.Expr.meta.write_json.html)
    * [ Miscellaneous ](../miscellaneous.html) __
      * [ polars.Expr.deserialize ](polars.Expr.deserialize.html)
      * [ polars.Expr.from_json ](polars.Expr.from_json.html)
      * [ polars.Expr.set_sorted ](polars.Expr.set_sorted.html)
    * [ Name ](../name.html) __
      * [ polars.Expr.name.keep ](polars.Expr.name.keep.html)
      * [ polars.Expr.name.map ](polars.Expr.name.map.html)
      * [ polars.Expr.name.prefix ](polars.Expr.name.prefix.html)
      * [ polars.Expr.name.suffix ](polars.Expr.name.suffix.html)
      * [ polars.Expr.name.to_lowercase ](polars.Expr.name.to_lowercase.html)
      * [ polars.Expr.name.to_uppercase ](polars.Expr.name.to_uppercase.html)
      * [ polars.Expr.name.map_fields ](polars.Expr.name.map_fields.html)
      * [ polars.Expr.name.prefix_fields ](polars.Expr.name.prefix_fields.html)
      * [ polars.Expr.name.suffix_fields ](polars.Expr.name.suffix_fields.html)
    * [ Operators ](../operators.html) __
      * [ polars.Expr.and_ ](polars.Expr.and_.html)
      * [ polars.Expr.or_ ](polars.Expr.or_.html)
      * [ polars.Expr.eq ](polars.Expr.eq.html)
      * [ polars.Expr.eq_missing ](polars.Expr.eq_missing.html)
      * [ polars.Expr.ge ](polars.Expr.ge.html)
      * [ polars.Expr.gt ](polars.Expr.gt.html)
      * [ polars.Expr.le ](polars.Expr.le.html)
      * [ polars.Expr.lt ](polars.Expr.lt.html)
      * [ polars.Expr.ne ](polars.Expr.ne.html)
      * [ polars.Expr.ne_missing ](polars.Expr.ne_missing.html)
      * [ polars.Expr.add ](pola