Marko Rauhamaa <ma...@pacujo.net>: > Roy Smith <r...@panix.com>: > >> Python already has a switch statement. It's just spelled funny... >> >> [...] >> >> try: >> raise value >> except Case1: >> print "did case 1" >> except (Case2, Case3): >> print "did either case 2 or 3" >> else: >> print "did default" > > Not bad! Definitely worth considering.
I wrote a simple test that switched between 26 "enums" using three techniques and measured execution times (2,600,000 switching operations). I also measured the time with no switching and subtracted that time from the test times. Results of the competition (performed with python3.2.3): 1. DICT DISPATCH TABLE (0.2 µs/switch) 2. IF-ELSE CHAIN (850% slower than DICT DISPATCH TABLE) 3. TRY-EXCEPT (3500% slower than DICT DISPATCH TABLE) Marko -- https://mail.python.org/mailman/listinfo/python-list
