Easy questions from a python beginner

[Alf P. Steinbach /Usenet]

* sturlamolden, on 12.07.2010 16:59:
> On 12 Jul, 07:51, "Alf P. Steinbach /Usenet"<alf.p.steinbach
> +use... at gmail.com>  wrote:
>
>> We're talking about defining a 'swap' routine that works on variables.
>
> I did not miss the point. One cannot make a swap function that rebinds
> its arguments in the calling stack frame. But a swap function can swap
> values, given that the type is not immutable:
>
> def swap(a,b):
>     a[0],b[0] = b[0],a[0]
>
>>>> a,b = [1],[2]
>>>> swap(a,b)
>>>> print a,b
> [2] [1]

OK, that's missing the point.

I thought you were joking.


Cheers & hth.,

- Alf

-- 
blog at <url: http://alfps.wordpress.com>