kj <no.em...@please.post> writes: > I use "while True"-loops often, and intend to continue doing this > "while True", but I'm curious to know: how widespread is the > injunction against such loops? Has it reached the status of "best > practice"?
E. W. Dijkstra used to advocate that every loop have exactly one entry point and exactly one exit point, i.e. no multiple break statements. This is probably a misstatement, but I believe that the purpose was to be able to specify a precondition at the loop entrance and a postcondition at the exit, and be able to verify the conditions more straightforwardly than if there were multiple exit points. But, that doesn't specifically seem to speak against "while True:". For example, Ada has a loop construct where the test and break is in the middle of the loop. -- http://mail.python.org/mailman/listinfo/python-list