Michael Walter wrote: > Maybe "switch" became a keyword with the patch.. Ah, right. Good catch :-) > Regards, > Michael > > On 6/12/06, M.-A. Lemburg <mal at egenix.com> wrote: >> Thomas Lee wrote: >> > Hi all, >> > >> > As the subject of this e-mail says, the attached patch adds a "switch" >> > statement to the Python language. >> > >> > However, I've been reading through PEP 275 and it seems that the PEP >> > calls for a new opcode - SWITCH - to be added to support the new >> > construct. >> > >> > I got a bit lost as to why the SWITCH opcode is necessary for the >> > implementation of the PEP. The reasoning seems to be >> > improving performance, but I'm not sure how a new opcode could improve >> > performance. >> > >> > Anybody care to take the time to explain this to me, perhaps within the >> > context of my patch? >> >> Could you upload your patch to SourceForge ? Then I could add >> it to the PEP. >> >> Thomas wrote a patch which implemented the switch statement >> using an opcode. The reason was probably that switch works >> a lot like e.g. the for-loop which also opens a new block. >> >> Could you explain how your patch works ? >> >> BTW, I think this part doesn't belong into the patch: >> >> > Index: Lib/distutils/extension.py >> > =================================================================== >> > --- Lib/distutils/extension.py (revision 46818) >> > +++ Lib/distutils/extension.py (working copy) >> > @@ -185,31 +185,31 @@ >> > continue >> > >> > suffix = os.path.splitext(word)[1] >> > - switch = word[0:2] ; value = word[2:] >> > + switch_word = word[0:2] ; value = word[2:] >> >> -- >> Marc-Andre Lemburg >> eGenix.com >> >> Professional Python Services directly from the Source (#1, Jun 12 2006) >> >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >> >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >> >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ >> ________________________________________________________________________ >> 2006-07-03: EuroPython 2006, CERN, Switzerland 20 days left >> >> ::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,FreeBSD for free ! :::: >> _______________________________________________ >> Python-Dev mailing list >> Python-Dev at python.org >> http://mail.python.org/mailman/listinfo/python-dev >> Unsubscribe: >> http://mail.python.org/mailman/options/python-dev/michael.walter%40gmail.com >> >> -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Jun 13 2006) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ 2006-07-03: EuroPython 2006, CERN, Switzerland 19 days left ::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,FreeBSD for free ! ::::
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