R Polars 1.6.0

This is an update that corresponds to Python Polars 1.35.2.

As of this version, this package depends on {S7}.
The newly added QueryOptFlags object is an S7 object.

Deprecations

• The following arguments of certain LazyFrame methods, which were previously used for query optimization, are deprecated in favor of the new optimizations argument (#1635).
  Some arguments that were intended for internal use have been removed without deprecation.

  • type_coercion
  • predicate_pushdown
  • projection_pushdown
  • simplify_expression
  • slice_pushdown
  • comm_subplan_elim
  • comm_subexpr_elim
  • cluster_with_columns
  • no_optimization
  • _type_check (removed)
  • _check_order (removed)
  • _eager (removed)

  Functions affected are those that gained the optimizations argument.
  See the next new features section for details.

  For the experimental <lazyframe>$lazy_sink_* methods, the above arguments and the collapse_joins argument (deprecated as of polars 1.4.0) are removed.

• <lazyframe>$to_dot()s ignored ... (dots) argument is deprecated (#1635).
  In future versions, an error will be raised if dots are not empty.

New features

• The following functions gain the experimental optimizations argument
  taking a QueryOptFlags object (#1633, #1634, #1635).
  • <lazyframe>$collect()
  • <lazyframe>$explain()
  • <lazyframe>$profile()
  • <lazyframe>$to_dot()
  • <lazyframe>$sink_batches()
  • <lazyframe>$sink_csv()
  • <lazyframe>$sink_ipc()
  • <lazyframe>$sink_parquet()
  • <lazyframe>$sink_ndjson()
  • as_polars_df(<lazyframe>)
• The following functions gain the engine argument (#1635).
  • <lazyframe>$explain()
  • <lazyframe>$profile()
• pl$collect_all() to efficiently collect a list of LazyFrames (#1598, #1635).
• <lazyframe>$remove() and <dataframe>$remove() as a complement to
  $filter() (#1632).
• New method <expr>$is_close() (#1637).
• New methods <group_by>$len() and <lazy_group_by>$len() (#1638).

Bug fixes

• Bump Rust Polars to py-1.35.2 (#1636).