Currently, when we perform unit test assertions we do something like:

left = naive.stump(T, m)
right = stumpy.stump(T, m)

np.assert_almost_equal(left, right)

However,left and right are also overloaded since we have left and right matrix profiles and indices. It has been proposed that we replace left with ref instead and either replace right or just name it appropriate

When your ADTs code interacts with another that doesn't use ADTs, you typically write wrappers. A good idea is to provide wrappers for common libraries (you can suggest a new one to this list):

• libc
• Linux syscalls

improve HarmonicNumber implementation:
https://github.com/axkr/symja_android_library/blob/master/symja_android_library/matheclipse-core/src/main/java/org/matheclipse/core/builtin/Arithmetic.java#L1825

• https://en.wikipedia.org/wiki/Harmonic_number
• https://medium.com/cantors-paradise/the-celebrated-harmonic-numbers-and-how-to-approximate-them-b8747a4efeec