Christophe wrote: > Steve Holden a écrit : > >>Christophe wrote: >> >> >>>Serhiy Storchaka a écrit : >>> >>> >>>>Roel Schroeven wrote: >> >>[...] >> >> >>>>>or >>>>> >>>>>def drawline(p1, p2): >>>>> # draw a line from p1[0], p1[1] to p2[0], p2[1] >>>>> foo(p1[0], p1[1]) >>>>> bar(p2[0], p2[1]) >>>> >>>> >>>> >>>>def drawline(p1, p2): >>>> # draw a line from p1 to p2 >>>> foo(*p1) >>>> bar(*p2) >>>> >>> >>> >>>That one is stupid. I don't see how you can make it work without some >>>global storing the p1 information in foo which I would consider as >>>very ugly code. >> >> >>In which case perhaps you should actually try the code. Then once you >>realise it works you can start to figure out why :-). Hint: f(*p1) >>appears as len(p1) separate arguments to the called function. > > > You should also notice that foo knows the starting point of the line but > not the ending point and so it can't draw the line. On the other hand, > bar knows the end point but not the starting point so it can't do the > job either. > This is rubbish.
foo(*p1) is *exactly* equivalent to foo(p1[0], p1[1]) and similarly bar(p2) is *exactly* equivalent to bar(p2[0], p2[1]) and consequently the second version of drawline is exactly equivalent to the first. So, if the second one is useless then so is the first. > And what about a function which computes the line length ? I'm not sure what point you are trying to make here. Can you explain? regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC www.holdenweb.com PyCon TX 2006 www.pycon.org -- http://mail.python.org/mailman/listinfo/python-list
