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DOC: move whatsnew on performance from 0.23.2 to 0.24.0 #21709

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Jul 2, 2018
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DOC: move whatsnew on performance from 0.23.2 to 0.24.0 #21709

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13 changes: 0 additions & 13 deletions doc/source/whatsnew/v0.23.2.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -59,19 +59,6 @@ Fixed Regressions
- Bug in :meth:`Timestamp.ceil` and :meth:`Timestamp.floor` when timestamp is a multiple of the rounding frequency (:issue:`21262`)
- Fixed regression in :func:`to_clipboard` that defaulted to copying dataframes with space delimited instead of tab delimited (:issue:`21104`)

.. _whatsnew_0232.performance:

Performance Improvements
~~~~~~~~~~~~~~~~~~~~~~~~

- Improved performance of membership checks in :class:`Categorical` and :class:`CategoricalIndex`
(i.e. ``x in cat``-style checks are much faster). :meth:`CategoricalIndex.contains`
is likewise much faster (:issue:`21369`, :issue:`21508`)
- Improved performance of :meth:`HDFStore.groups` (and dependent functions like
:meth:`~HDFStore.keys`. (i.e. ``x in store`` checks are much faster)
(:issue:`21372`)
- Improved performance of :meth:`MultiIndex.is_unique` (:issue:`21522`)
-

Documentation Changes
~~~~~~~~~~~~~~~~~~~~~
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6 changes: 6 additions & 0 deletions doc/source/whatsnew/v0.24.0.txt
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Expand Up @@ -201,6 +201,12 @@ Performance Improvements
- Improved performance of :func:`Series.describe` in case of numeric dtpyes (:issue:`21274`)
- Improved performance of :func:`pandas.core.groupby.GroupBy.rank` when dealing with tied rankings (:issue:`21237`)
- Improved performance of :func:`DataFrame.set_index` with columns consisting of :class:`Period` objects (:issue:`21582`,:issue:`21606`)
- Improved performance of membership checks in :class:`Categorical` and :class:`CategoricalIndex`
(i.e. ``x in cat``-style checks are much faster). :meth:`CategoricalIndex.contains`
is likewise much faster (:issue:`21369`, :issue:`21508`)
- Improved performance of :meth:`HDFStore.groups` (and dependent functions like
:meth:`~HDFStore.keys`. (i.e. ``x in store`` checks are much faster)
(:issue:`21372`)
-

.. _whatsnew_0240.docs:
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