[Python-checkins] python/nondist/peps pep-0008.txt,1.24,1.25

[rhettinger at users.sourceforge.net]

Update of /cvsroot/python/python/nondist/peps
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv24377

Modified Files:
	pep-0008.txt 
Log Message:
SF patch #980695:  efficient string concatenation
(Original patch by Armin Rigo).



Index: pep-0008.txt
===================================================================
RCS file: /cvsroot/python/python/nondist/peps/pep-0008.txt,v
retrieving revision 1.24
retrieving revision 1.25
diff -C2 -d -r1.24 -r1.25
*** pep-0008.txt	30 Mar 2004 01:12:22 -0000	1.24
--- pep-0008.txt	6 Aug 2004 18:47:26 -0000	1.25
***************
*** 522,525 ****
--- 522,534 ----
  Programming Recommendations
  
+     - Code should be written in a way that does not disadvantage other
+       implementations of Python (PyPy, Jython, IronPython, Pyrex, Psyco,
+       and such).  For example, do not rely on CPython's efficient
+       implementation of in-place string concatenation for statements in
+       the form a+=b or a=a+b.  Those statements run more slowly in
+       Jython.  In performance sensitive parts of the library, the
+       ''.join() form should be used instead.  This will assure that
+       concatenation occurs in linear time across various implementations.
+ 
      - Comparisons to singletons like None should always be done with
        'is' or 'is not'.  Also, beware of writing "if x" when you