M.-A. Lemburg wrote: > Having a simple switch statement > would enable writing very fast parsers in Python - ... > Instead of having one function call per token, you'd > only have a single dict lookup.
> BTW, has anyone in this thread actually read the PEP 275 ? I haven't actually seen any use cases outside of parsers branching on a constant token. When I see stacked elif clauses, the condition almost always includes some computation (perhaps only ".startswith" or "in" or a regex match), and there are often cases which look at a second variable. If speed for a limited number of cases is the only advantage, then I would say it belongs in (at most) the implementation, rather than the language spec. -jJ _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
