I'm trying to do some TDD with rust and I have to add a simple abstraction to make the code agnostic for multiple "backends". The backends need an init function for setup (they perform a con...

type alias Bag a = List (a, Int) I am trying to create functions that work with this type alias but I can't figure out how to return a Bag from a function.. Like in the following function I am hopin...

i need to do a subtraction in haskell, and the result add an list, but the new list doesn't give me the real valors for example: [1,2,3,4,5] prom = (1 + 2 + 3 + 4 + 5) / 5 = 3 subs = (1 - 3) = -2 ad...

Im trying to map an array to a function. Then map that that array into another function but not sure how to deal with map type object or how to map multidimensional arrays. import numpy as np import s...