Mike Hansen wrote:
> Hello,
>
> On Nov 14, 12:26 am, Jason Grout <[EMAIL PROTECTED]> wrote:
>> Franco Saliola wrote:
>>
>>>> Any comments or objections?
>>> What about list comprehensions? Something like the following.
>>> sage: var('i,n')
>>> (i, n)
>>> sage: sum(2^i for i in range(n+1))
>>> 2^(n+1) - 1
>>> I ask because this seems like the natural/first thing a user would try.
>> It's consistent:
>>
>> sage: sum(i for i in range(10))
>> 45
>>
>> However, range would have to also be overridden here, since range only
>> accepts integers.
>>
>> Or we could override the ellipsis notation:
>>
>> sum(i for i in (1..oo))
>>
>> sum(i for i in (1..n+1))
>
> I don't think any of these are even feasible or what we want since
> they create a "black box" generator which gets passed into sum.
I agree that they probably aren't feasible. I was throwing them out for
the purposes of brainstorming for interfaces.
Jason
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