Katas | C # and Java programs to practice your skills

I'm a beginner and attempting some katas on codewars. I wonder if anyone can help me out and explain what is happening with this code. At this point I'm not looking for a solution for the whole exercise, I'd just like to understand why the const cumulativeSum is working differently for the two different arrays.

I'm creating two cumulative arrays, the code works for the first one (cumulativeProfit with the starting array peopleInLine) and everything comes out correctly but when I use it for the second one (cumulativeOutgoings with the starting array changeRequired) the figures are wrong.

My peopleInLine array is: [100, 25, 50, 100, 25, 25, 25, 100, 25, 50, 25, 100, 25, 25, 50, 100, 25, 25, 50, 100]

I have to admit that I don't really understand how const cumulativeSum = (sum => value => sum += value)(0) works. I found it after searching on stack overflow!

Very grateful for any assistance.

I try to create search feature using $text and $search in mongoose but it stuck when the query meet mongodb english stop words. I try to change my default_language to none to ignore the stop words list but then I realized that I cannot change the default_language.

I was wondering the way my mongoose always create index with default_language: english, even I directly use default_language: 'none'.

Here is my code:

I'm fairly new to Coq, and was doing some Katas on CodeWars for fun and learning.

I'm stuck with one of them and want to hear some ideas from you.

So, I have:

I've been solving katas on codewars and I stumbled upon a general code problem that I can't seem to find an answer to.

This is my code:

I’m doing a bunch of projects in CLion, each of which has two pieces of code: Solution and TestConductor. The Solution is the solution to a code kata, and the TestConductor uses Catch2 to run the tests (which are stored in input_n.txt and output_n.txt files). TestConductor has to call Solution, of course. Solution changes for each project (representing a different kata), but TestConductor only changes in that it needs to know what the input.txt and output.txt files are called (their names can vary slightly), and how to call Solution (whose name is different for different katas, like it could be called PermutationFinder or PairSorter or whatever).

I’ve basically been copy-pasting the TestConductor code into each of my projects, which seems smelly to me. What would be the philosophically correct way to work with this? Make TestConductor into a library of some kind? (Still learning how to make and use those.)

TestConductor code is here if you want some concreteness. (45 lines)

I guess more generally, what do you do when the code which you want to abstract, and reuse over multiple projects, isn’t called by the code which changes, but rather calls it?

I'm gather this is a rather common situation that has a simple solution. Sorry if this is a repeat question; I didn't know what search terms I could use.

I've been learning quantum computing related concepts over the past few months. We've generally used the big endian notation while solving problems on paper.

Recently on starting to code I find that at a lot of places the little endian notation is used. I see the same in Quantum Katas by Microsoft and also in Qiskit. On paper, however, thinking in terms of Little endian reverses the order of tensor products, etc. So sometimes it gets confusing.

Is there any particular trend on using little endian in quantum computing softwares (QDK, Qiskit, etc) or any reason for the same?

Any suggestions in terms of what is the best way to think (in the above context), that can help while developing quantum algos to problems and smoothly translating them into code are welcome.

i'd like to ask some question. I want to make a change password feature in codeigniter 4, so i have to updateing my old password, but when i do that, the password it's not updated, but all my flashdata works perfectly. I also try a normal sql query but not work too. Where is my mistake?

When i var_dump the new hash password, the new password is hashed, but again not updating my database.

This is my model

I am attempting to solve this codewars problem:

Complete the function scramble(str1, str2) that returns true if a portion of str1 characters can be rearranged to match str2, otherwise returns false.

examples:

I'm doing katas (practices) at codewars.com to practice the learning I'm getting in Python. This is the kata :

Given two integer arrays a, b, both of length >= 1, create a program that returns True if the sum of the squares of each element in a is strictly greater than the sum of the square of each element in b.

This is the code that I tried: