Sorry, I'm very new to python. I'm aware that iterating frames in pandas is a very slow operation. I've heard vectorization speeds things up. I found a project that I'm using for sentiment analysis on reddit. The Calculate dataframe method wasn't working for some reason, (maybe different vers...

I want to keep some common default values in a header file to be shared across a project. I've come up with 2 approaches: Global constexpr expressions wrapped in a namespace Class with static constexpr methods, similar to std::numeric_limits Which of these is better? Or is there a better third ...

Given a smaller strings and a bigger string b, design an algorithm to find all permuta­tions of the shorter string within the longer one. @ def findPermutations(large: String, small: String): Int = large.sliding(small.length) .toList .filter(_.toSet == small.toSet) .leng...

I'm stuck to make some changes on this coding, to ensure no emails sent via bpaNotificationService if email in orderContacts object is null, so it doesn't throw error logs? And also to include an info logger to say that "not sending email because no email is given". This is only if it's email not...

I'm learning C, and currently I follows C99 standard. Here is my implementation of integer-stack, which is just a stack you can do: push, pop, and print the content of the stack. I need some feedbacks to increase performance/readability or anything you think important, thank you. int_stack.h: #i...

Sometimes my code return an array, sometimes it's empty. In PHP 7.2.34 I can check if an array key value is set in specific way, even if the variable is no array. (when I get the array from the database, it can happen that the option doesn't exist and no array is returned, making my variable $my_...

This script simulates atomic patterns with hexagonal lattices on surfaces, and their Fourier transforms (FTs) and will be used to compare visually to measured data (the two currently blank squares). I'm using matplotlib widgets for a GUI to adjust many parameters, and after each change the image ...

Exercise 1-23: Write a program that remove all comments from a C program. Key idea: if the start of a quoted string is detected, then I call a function that prints the entire string. handled '"', '\"' else if a start of a single line comment is detected, i use a second function to skip it. else ...

Use case - motivation & challenge Hi all! I have been working with Python for the last two years, but never learned proper object-oriented programming and design patterns. I've decided for this year to close this gap by reading some books and applying the knowledge to a real-world problem. I am l...

I'm new to C++ and am following up on: A simple multithreaded FileLogger in C++ In there the top answer (made by uli) was an extensive review. I implemented his review and posted it as an answer. It was suggested to me that I post my code as a new question. I am curious to know if I implemented h...

I have the follwing code: let drawRegistryPolygonsId = []; registryLayers.forEach((r) => { r.forEach((_r) => { const drawSourceId = this.MapLibraryService.interactiveMap.getSourceId(); drawRegistryPolygonsId.push(drawSourceId); this.drawPolygon(_r, drawSourceId); });...

The exercise i am working on requires me to read a binary sequence stored in a text file. The objective is to find the occurrences of all subsequences of length between a and b (their values are given in the function parameters) and put them in a list of tuples. For example: If the following bina...

I'm completing the "Google Foobar" challenges - each challenge poses a question and provides two test answers to try your code with. My code returns the correct output in my IDE (thonny) on my computer, but fails the tests within Foobar. I think I am missing something about how the code is called...

For a Django-Server I use several custom Error-Codes, error-titles and descriptions, possibly other fields might follow. I'm using right now a basic global dictionary. {'512': { 'errorno': 512, 'errordescr': "Database Down", 'toDo': "Restart the database, Server: "+ser...

The problem was How many sequences of 9 dice rolls are increasing (e.g. 223444556). Ok, I know the answer is given by choose(14,9) but i just wanted to play around with dplyr. A fast but not elegant way: library(tidyverse) expand.grid(data.frame(matrix(rep(1:6,9),ncol=9))) %>% filter(X1<=X2 & X2<

Here's my open source project: https://github.com/Skewjo/SysLat_Software Today I'd like to attempt to clean up my USB implementation. Header file here: https://github.com/Skewjo/SysLat_Software/blob/master/USBController.h Implementation here: https://github.com/Skewjo/SysLat_Software/b...

I have several static variables in my dialog class that I'm declaring in the header and then defining immediately in the cpp file. They are being used in an application with 2 threads, and these particular variables are mostly shared between both threads. Main thread that runs the dialog box and...

I created my own JavaFX component, using the code below. I used the Behavior to intercept the keyboard shortcuts. The Behavior is accessible only using '-add-export' directive. This means is not intended to be accessible by default. Why? Maybe my approach is not the correct one? Can you please re...

A Few years back I used to opt the below method to run the shell program in a Parallel way to open multiple ssh session at a time to get a quick result. I know there are various other good utilities available, however due to some pressing needs I've to use this way, this dirty piece of code works...

I have two csv files containing the positions of stars (x,y) in pixels identified with photometry. I have generated the position (x1,y1) in pixels of artificial stars (file1), and added them to an existing image with real stars to test the photometry (file2). I want to compare the positions in th...

I'm currently working on an uncrafting tool for minecraft and got a neat output working that shows all the materials needed in a tree. I wonder if the code used to print that tree could be improved somehow. I only have the recursion depth as a measurement and the ArrayList gets filled in the same...

I am creating a company Directory and I've got the main page, with all the contacts, and two modals, so basically when I want to delete a contact from the directory I press on the delete button inside the profile page (1st modal), and a popup opens (2nd modal) asking if you're sure you want to de...

I tried to create a simple javascript game. I know that the recommended way to create a game is using canvas. I have lot of dom manipulations (seems like an issue). Maybe someone can have a look and give can explain me the problems. javascript: const KEY_CODE_LEFT = 37; const KEY_CODE_RIGHT = 39;...

I'm not very experienced with OOP and Python and I've been wanting to kind of professionalize my way of writing code, etc. I have a pretty big project but I can't post it all here, it's a bit much so I have taken two classes. My question is; in what departments can I improve? from datetime import...

Application context I am working on a game I call "Apes and Snakes". So far the code only allows players to connect to a host using a room code and WebRTC. Players and the host send messages back and forth to each other over WebRTC. When a player receives a message, it is passed to a "handler". T...