On Feb 15, 11:50 pm, Steve Holden <[EMAIL PROTECTED]> wrote: > Dan Bishop wrote: > > On Feb 15, 10:24 am, nexes <[EMAIL PROTECTED]> wrote: > >> Alright so me and my friend are having argument. > > >> Ok the problem we had been asked a while back, to do a programming > >> exercise (in college) > >> That would tell you how many days there are in a month given a > >> specific month. > > >> Ok I did my like this (just pseudo): > > >> If month = 1 or 3 or etc .... > >> noDays = 31 > >> Elseif month = 4 or 6 etc .... > >> noDays = 30 > >> Else > >> noDays = 29 > >> (we didn't have to take into account a leap year) > > >> He declared an array and assigned the number of days in a month to its > >> own element in an array. Now > >> I realise that in this example it would not make a difference in terms > >> of efficiency, but it is my belief that if > >> there is more data that needed to be assigned(i.e. a couple megs of > >> data) it would be simpler (and more efficient) to > >> do a compare rather then assigning all that data to an array, since > >> you are only going to be using 1 value and the rest > >> of the data in the array is useless. > > >> What are everyone else's thoughts on this? > > > days_in_month = lambda m: m - 2 and 30 + bool(1 << m & 5546) or 28 > > Elegant, but the 5546 is way too magical for readability.
>>> int( '0101010110101'[::-1], 2 ) 5546 -- http://mail.python.org/mailman/listinfo/python-list
