a*q not equal q*a about quibbler

[kmaork]

@rkishony That makes sense to me, as in python a*q shouldn't necessarily be the same as q*a. In python, the implementation of a binary arithmetic operator depends only on the type of the left operand.

That said, I do agree that a symmetrical behavior is more intuitive. To allow that we would probably override ndarray.__mul__ (the multiplication implementation for ndarrays) to return quibs when it receives quib arguments, but unfortunately it can't be done naturally in python.

There are workarounds, like using np.multiply or pyquibbler.q(mul, a, q).

If you think it's important we might need to think of a creative solution.

[rkishony]

i understand in python multiplication is not necessarily commutative, but i think the user is in the mindset of numpy (or a mathematical mindset), where multiplication is commutative. i think will be good to find a solution. but we can defer this for later. do we have a list of "todos"/"requested features"?

[rkishony]

duplicate with #180