optimization question

Michael Hudson mwh at python.net
Mon Aug 12 10:42:15 EDT 2002

Andrew Koenig <ark at research.att.com> writes:

> I'd like to take a step back for a moment.  I originally asked a
> simple question:

Which did get answered in amongst all the noise, yes?

> If I write an expression of the form s[i:j] == x, can I count on the
> implementation optimizing it by avoiding a copy of s[i:j], so that I
> can be assured of not having to think about finding more efficient
> alternatives?

If you have a question that contains the phrase "can I count on the
implementation optimizing ..." then the answer is almost certainly


  ... so the notion that it is meaningful to pass pointers to memory
  objects into which any random function may write random values
  without having a clue where they point, has _not_ been debunked as
  the sheer idiocy it really is.        -- Erik Naggum, comp.lang.lisp

More information about the Python-list mailing list