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| author | Raymond Hettinger <python@rcn.com> | 2004-03-18 09:48:12 (GMT) |
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| committer | Raymond Hettinger <python@rcn.com> | 2004-03-18 09:48:12 (GMT) |
| commit | ade08ea8a87ee7130eff930f047abad9e1ec3d84 (patch) | |
| tree | 62250030bfae4c977fca0fc15110a30a806ef8ed | |
| parent | 0ce6dc85300050356dfa127d741e80fdc9ad987a (diff) | |
| download | cpython-ade08ea8a87ee7130eff930f047abad9e1ec3d84.zip cpython-ade08ea8a87ee7130eff930f047abad9e1ec3d84.tar.gz cpython-ade08ea8a87ee7130eff930f047abad9e1ec3d84.tar.bz2 | |
Add news entries for the dictionary optimizations.
| -rw-r--r-- | Doc/whatsnew/whatsnew24.tex | 5 | ||||
| -rw-r--r-- | Misc/NEWS | 4 |
2 files changed, 8 insertions, 1 deletions
diff --git a/Doc/whatsnew/whatsnew24.tex b/Doc/whatsnew/whatsnew24.tex index 1607cc7..b743a5c 100644 --- a/Doc/whatsnew/whatsnew24.tex +++ b/Doc/whatsnew/whatsnew24.tex @@ -264,7 +264,10 @@ yellow 5 \begin{itemize} \item The inner loops for \class{list} and \class{tuple} slicing - were optimized and now run about one-third faster. + were optimized and now run about one-third faster. The inner + loops were also optimized for \class{dict} with performance + boosts to \method{keys()}, \method{values()}, \method{items()}, +\method{\iterkeys()}, \method{\itervalues()}, and \method{iteritems()}. \item The machinery for growing and shrinking lists was optimized for speed and for space efficiency. Small lists (under eight elements) @@ -12,6 +12,10 @@ What's New in Python 2.4 alpha 1? Core and builtins ----------------- +- Optimized dict iterators, creating separate types for each + and having them reveal their length. Also optimized the + methods: keys(), values(), and items(). + - Implemented a newcode opcode, LIST_APPEND, that simplifies the generated bytecode for list comprehensions and further improves their performance (about 35%). |