Re: How to make GNU Guile more successful

[Nala Ginrut]

I've taken a look at Python bridge for other languages, there're several:
For Lua
https://labix.org/lunatic-python

For ObjC
https://pythonhosted.org/pyobjc/

For JS
https://github.com/ipython/ipython/wiki/IPEP-26:-Full-Featured-python-js-object-bridge

I'm glad that the idea is not just my imagination, it exists and
there're something to read.
I'll start this work after release Artanis-0.2.2.

Best regards.


On Sun, Jul 16, 2017 at 6:17 AM, Jan Wedekind <address@hidden> wrote:
> On Sat, 15 Jul 2017, Nala Ginrut wrote:
>
>> @Jan Yes, that should be a way to go. And I have a new idea which is
>> just an idea at present. Many we could find a way to read PyObject to
>> Gulie, and call Python module directly (say, numpy). There should be a
>> type-compatible abstract level between Guile and PyObject. If it
>> works, we may implement Python3 on Guile. Although it seems a large
>> work to implement complete Python3 frontend, we may save lot of work
>> to write alternative Python modules for Guile.
>> Julia language does in this idea, but it's backend is compatible with
>> Python. My idea is not to convert all Python types to Guile, just wrap
>> some types to a special object like <pyobject> is enough, then Guile
>
>
> Sure, a Guile Python bridge would be nice for using NumPy and SciPy. However
> while NumPy is quite mature, it cannot do compose array operations and avoid
> intermediate results as Theano can.
> One could write bindings to Theano. However I think that the bridging code
> would get in the way at some point.
>
> From the Theano documentation [1]:
>
>>>> import numpy
>>>> import theano.tensor as T
>>>> from theano import function
>>>> x = T.dscalar('x')
>>>> y = T.dscalar('y')
>>>> f = function([x, y], x + y)
>>>> f(2, 3)
>
>
> This is about having "2 + 3" being computed with fast compiled code.
> With Scheme macros most of that can be implemented transparently [2]:
>
>>>> (use-modules (aiscm tensor) (aiscm int))
>>>> (tensor (+ 2 3))
>
>
> [1]
> http://www.deeplearning.net/software/theano/tutorial/adding.html#adding-two-matrices
> [2] http://wedesoft.github.io/aiscm/operation.html#tensor-operations