Tensor examples in the documentation are not correct.

[bassoy]

https://boostorg.github.io/ublas/
I checked this documentation link to try out some code examples and under this section https://boostorg.github.io/ublas/#tensor_idealogy
The code example given gives a build error on my system saying 'shape' is not defined. I have tried other examples and everything under vector and matrix works fine but everything under tensor gives an error. How can I fix this?

Originally posted by @harjot20022001 in #133 (reply in thread)