Am 25.02.12 21:35, schrieb Rick Johnson:
> On Feb 25, 11:54 am, MRAB <[email protected]> wrote:
>> [...]
>> That should be:
>> if maxlength is not None and len(string) <= maxlength:
>
> Using "imaginary" infinity values defiles the intuitive nature of your
> code. What is more intuitive?
>
> def confine_length(string, maxlength=INFINITY):
> if string.length < maxlength:
> do_something()
>
> def confine_length(string, maxlength=None):
> if maxlength is not None and len(string) <= maxlength:
> do_something()
I just had a closer look at it. It seems to be more complicated than i
thougth: You will have to write
def confine_length(string, maxlength=None):
if maxlength: # maxlength exists, comparison possible
if len(string) <= maxlength:
do_something()
else: # maxlength does not exist, so always do something
do_something()
you migth also write
def confine_length(str, maxlength=None):
do_it = (len(str) <= maxlength) if maxlength else True
if do_it:
do_something()
but it really does not look intuitive. Hmm. My idea was that None is a
perfect Value for infinity since there is no infinitely large number.
But as i see it, you must have two comparisons then. Maybe someone has a
better idea?
Wolfgang
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