In article <[email protected]>
Chris Angelico <[email protected]> wrote:
>2011/7/15 Rafael Durán Castañeda <[email protected]>:
>> Hello all,
>> What's the meaning of using i++? Even, does exist ++ operator in python?
>
>++i is legal Python but fairly useless. It's the unary + operator,
>applied twice. It doesn't increment the variable.
Well...
class Silly:
def __init__(self, value):
self.value = value
self._pluscount = 0
def __str__(self):
return str(self.value)
def __pos__(self):
self._pluscount += 1
if self._pluscount == 2:
self.value += 1
self._pluscount = 0
return self
def main():
i = Silly(0)
print('initially, i = %s' % i)
print('plus-plus i = %s' % ++i)
print('finally, i = %s' % i)
main()
:-)
(Of course, +i followed by +i *also* increments i...)
--
In-Real-Life: Chris Torek, Wind River Systems
Intel require I note that my opinions are not those of WRS or Intel
Salt Lake City, UT, USA (40°39.22'N, 111°50.29'W) +1 801 277 2603
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