On Mar 13, 2011, at 13:09 , daveloeffler wrote:
> On Mar 13, 6:34 pm, "Justin C. Walker" wrote:
>> Perhaps I should have expected this, but
>>
>> sage: R=Integers(5)
>> sage: L=R.list()
>> sage: L
>> [0, 1, 2, 3, 4]
>> ## I just want the *non-zero* elements:
>> sage: L.__delitem__(0)
>> sage:
On Mar 13, 6:34 pm, "Justin C. Walker" wrote:
> Perhaps I should have expected this, but
>
> sage: R=Integers(5)
> sage: L=R.list()
> sage: L
> [0, 1, 2, 3, 4]
> ## I just want the *non-zero* elements:
> sage: L.__delitem__(0)
> sage: L
> [1, 2, 3, 4]
> ## Ah!
> ## Uh-oh
> sage: R.list()
> [1,
