Rock Liang

Unable to import traits implementation from ndarray

7

# Question - Hi I run in a problem related with `LeastSquare`: I am trying to import the `ndarray_linalg:: {LeastSquaresSvd, LeastSquaresSvdInto, LeastSquaresSvdInPlace}` . And calling from `ndarray::Array1::least_squares` class. - However...

Add(concat): prefix and suffix options (fix #48)

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## Relevant issues & PRs See #48. ## Checklist - [x] This affects the tests of the project. - [x] I have updated the tests as needed.