http://quantstack.net/xtensor
https://github.com/QuantStack/xtensor

https://xtensor.readthedocs.io/en/latest/
https://xtensor.readthedocs.io/en/latest/numpy.html

https://github.com/wolfv/xtensor-showcase

2019
https://deque.blog/2019/01/11/pythagorean-triples-in-modern-c/
2018
https://towardsdatascience.com/the-xtensor-vision-552dd978e9ad