I bet this ticket has the simplest nontrivial patch:
https://trac.sagemath.org/ticket/32314
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On Fri, Aug 6, 2021 at 5:44 PM David Roe wrote:
>
> I think Nils' original solution, of adding an immutable keyword option to the
> parent, is a good one. I've run into a similar issue with matrices, where I
> had to make them immutable before using them as dictionary keys.
> David
>
I agree
I think Nils' original solution, of adding an immutable keyword option to
the parent, is a good one. I've run into a similar issue with matrices,
where I had to make them immutable before using them as dictionary keys.
David
On Fri, Aug 6, 2021 at 7:39 PM Nils Bruin wrote:
> On Friday, 6
Actually it depends:
sage: def build():
: v = vector(ZZ, 1000)
: for i in range(1000):
: v[i] = Integer(i)
: return v
:
:
sage: def build2():
: l = list()
: for i in range(1000):
: l.append(Integer(i))
: return
On Friday, 6 August 2021 at 16:31:23 UTC-7 wst...@gmail.com wrote:
> To clarify, by "similar reasons to numpy", I meant that you open up
> the possibility of using Cython, vectorized operations, JITs like
> numba, etc. Some of these provide order of magnitude speedups and
> aren't an option
On Friday, 6 August 2021 at 14:13:19 UTC-7 wst...@gmail.com wrote:
>
> Possible benefits may include:
>
> - potentially much faster: for similar reasons to numpy, a mutable sage
> vector can be much faster than a generic Python list.
>
I wonder about that. The main reason why it's fast in numpy
On Fri, Aug 6, 2021 at 4:16 PM Kwankyu Lee wrote:
>
>
>
> On Saturday, August 7, 2021 at 6:13:19 AM UTC+9 wst...@gmail.com wrote:
>>
>> Possible benefits may include:
>>
>> - potentially much faster: for similar reasons to numpy, a mutable sage
>> vector can be much faster than a generic Python
On Saturday, August 7, 2021 at 6:13:19 AM UTC+9 wst...@gmail.com wrote:
> Possible benefits may include:
>
> - potentially much faster: for similar reasons to numpy, a mutable sage
> vector can be much faster than a generic Python list.
>
>
sage: def build():
: v = vector(QQ, 1000)
On Friday, 6 August 2021 at 15:59:27 UTC-7 Kwankyu Lee wrote:
> On Saturday, August 7, 2021 at 5:47:54 AM UTC+9 Nils Bruin wrote:
>
>> So how bad would it be to potentially double the number of vector spaces
>> in existence by giving them an extra parameter determining whether fresh
>> vectors
On Saturday, August 7, 2021 at 5:47:54 AM UTC+9 Nils Bruin wrote:
> So how bad would it be to potentially double the number of vector spaces
> in existence by giving them an extra parameter determining whether fresh
> vectors (such as those resulting from vector arithmetic) should be mutable
On Fri, Aug 6, 2021 at 1:47 PM Nils Bruin wrote:
> On Thursday, 5 August 2021 at 21:01:28 UTC-7 Kwankyu Lee wrote:
>
>>
>> I looked into some. They use vectors like lists or mutable matrices.
>>
>
> Yes, I expect that this will happen more with code in the future. People
> who have exposure to
On Thursday, 5 August 2021 at 21:01:28 UTC-7 Kwankyu Lee wrote:
>
> I looked into some. They use vectors like lists or mutable matrices.
>
Yes, I expect that this will happen more with code in the future. People
who have exposure to numpy et.al. tend to write code that way. I suspect
that in
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