split-array | Split an array into arrays of a specific length | Data Manipulation library

I need to create a function that take as parameter an array and a target. It should return an array of arrays where the sum of these numbers equals to the target

Here is 100 numbers, 10 per row.

I am trying to create a chunking class in typescript, since I keep reusing the same code over and over based on: Split array into chunks

Here is what I have:

Below is an example DataFrame.

Let's consider a very large numpy array a (M, N). where M can typically be 1 or 100 and N 10-100,000,000

We have the array of indices that can split it into many (K = 1,000,000) along axis=1.

We want to efficiently perform an operation like integration along axis=1 (np.sum to take the simplest form) on each sub-array and return a (M, K) array.

An elegant and efficient solution was proposed by @Divakar in question [41920367]how to split numpy array and perform certain actions on split arrays [Python] but my understanding is that it only applies to cases where all sub-arrays have the same shape, which allows for reshaping.

But in our case the sub-arrays don't have the same shape, which, so far has forced me to loop on the index... please take me out of my misery...

There are a lots of examples of splitting an array into chunks, like this one: Split array into chunks, but I also wanted to keep the minimum size of each chunk, last chunk's size shouldn't be smaller than the expected minimum size.

Let's say you have an array with 1001 items, and you want to split into chunks of 100. The last chunk will became size of 1, in certain cases it might not be the expected result. So you also have minimum size of the chunk expected. What are the possible approaches?

I have the following 2 functions:

I cannot find map in Swift. Anyone knows how to resolve this issue?

Use of unresolved identifier 'map'

I was trying to run this code

I'm a bit sorry about tags, probably I understood my problem not right and used them wrong but..

The problem I'm faced with my project is new for me and I never before experienced it. So in my case I have a huge dataset response from DB (Mongo, 100'000+ docs) and I needed to http-request every specific field from doc.

Example array from dataset will be like: