Eric Sumner wrote: >> You mean something like this?: >> >> switch x in colours: >> case RED: >> # whatever >> case GREEN: >> # whatever >> case BLUE: >> # whatever >> >> I think Guido's right. It doesn't solve the underlying problem because the >> compiler still has to figure out how to build a dispatch table from the >> possible values in colours to the actual bytecode offsets of the cases. > > To implement this, you actually need two lookup tables: one particular > to the switch that maps labels to bytecode offsets, and one in the > dispatch table to map values to labels. The former is built when the > switch is compiled, and the latter is built wherever the dispatch > table is defined. Each lookup is still O(1), so the whole operation > remains O(1).
what's a "label" ? </F> _______________________________________________ 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
