I have the following function that causes a significant visual jittering and lag in my access database - This is a treeview selection based on data in a table (tblDATA) with the fields: Object | Attribute | Property | Value I have tried echo and me.painting but figured my actual for loops need to...

I've rewritten a piece of Javascript in Python 3.7 that decompresses a file compressed in a specific format. The project that I got this from is available here. The code I've come up with is as close an analog as I could interpret (I'm not the best at Javascript). def decompress_lz2(data): gl...

I created a TCP Server and Client and I really would like to know if its any good in regards of performance and code quality / safety. I hightlight the server and client class here. If you need more insight in the Helper classes I could share them as well. One thing I know is creating threads for...

This is a second shot at creating a Martingale betting simulator. The original code needed such heavy refactoring that I just started from scratch. Script simulates the Martingale betting strategy of betting a fixed amount until a loss occurs, at which point the bet is doubled to make up for the ...

I created a pretty straightforward snakes and ladders implementation in Java just for the heck of it. The program can be summed up as- a. Object of Board contains an array of Type Tile to represent the actual board. b. Object of type Tile contains an Enum data member to identify if its a regular ...

This Firebase cloud function must return a promise but my understanding of nesting them is shaky. This function performs a Firestore read and then sends a remote message if a condition is met (based on data from that read). I first return the call to get the document because get() itself returns ...

Good morning, As part of my study, I decided to do some tasks from frontendmentor site. It's a short html code but I would like to learn good practices from the beginning. The problem I encounter is adding names to classes to make them readable and second problem is what should I pay attention to...

I know that this challenge can be solved using HashSets, but what is the disadvantage of this way except the time complexity. public ArrayList<String>removeDuplicates(ArrayList<String>emails){ String m=""; for(int i=0; i<emails.size(); i++){ if(m.contains(emails.get(i))){ ...

I want to force download only images in PHP. But, the problem is that I am not able to modify the code for the purpose. The code which I made is able to download any file in that folder. So, can anyone help me with modifying the code for downloading only images (.png, .jpg, .gif, .webp, etc.,)? I...

I have a piece of code that takes a dictionary as input and validates it based on the following rules: The dictionary has a key named items and its value must be a list Now, the list from point 1 must be a nested list with the length of each list should be 2 The first element ([0]) of every nest...

I want to search for positions inside a range of integers. How to improve the code in terms of efficiency, since both my search list and the ranges are very big: #Range list with ids range_lst = [(121000, 122000, 'foo'), (123456, 124557, 'bar'), (156789, 163659, 'egg')] # Positions which we want ...

I'm working on an API endpoint working with enums, and I need to return a different Response/ViewModel based on enum value. I'm sure Generics can help me here but I can't figure how. Multiple entry points that looks like : public async Task<IActionResult> Get[ElementEnum](Enum enum, int? id = nul...

I wrote a simple, 2-player Pong game for a Udacity Nanodegree in C++. The program has the following class structure (relatively new to UML so any tips on here would be very much welcome too): Towards the end of the project, as I needed to add more features, my Game class started to do many many...

So I created a thread server that creates threads and associates them with a handle so that you can keep specific threads for specific tasks e.g. run all graphics rendering on thread 0, run physics stepping on thread 1 and use thread 2 for downloading a file of the internet etc. Personally I've f...

To get the book list from https://www.java67.com/2015/09/top-10-algorithm-books-every-programmer-read-learn.html , I am using the following code in the console of the firefox DevTools: var select = document.querySelectorAll("div.post-body.entry-content div h3 b"); for (i = 0; i < select.length;...

I have new user data (i want to import/update it). Accounts is finded by user data. I want to update or create new accounts depended on finded accounts by user data : if (accountById != null) { if (accountByNumber != null) { ...

I've created a Node.js package that retrieves data from Icinga (a monitoring platform), formats it and passes it off to a class that generates some HTML and then sends it all out as an email. The email, in its simplest form, looks something like this: I come from a Ruby/Python background and thi...

I made a very primitive Tic-Tac-Toe using Python and I would like a grade on how well I coded the game. What code was there that could've been simpler or more efficient? And any advice you can give me? Below is my first 3 line of code but the link to the entire source code is: https://onlinegdb.c...

I use an online, simplified notebook. I'm able to add notes, delete notes, and edit existing notes. I find the code to be pretty unattractive and is heavily repeated. When I built this, I borrowed code from many sources (I was still learning web programming) and I had a hard time consolidating th...

I decided to print a float value \$x\in[0,1)\$. But not the rounded value like print(x) does but the exact represented value. And only using basic operations: def print_float(x): # Convert float x to integer fraction num/den. num, den = 0, 1 while x: x *= 2 num *= 2 ...

So I was recently asked to complete the following challenge for an interview: Programming Problem Provide a production ready solution that accepts a new user name, validates a single string input as the password, and stores it locally. The solution should be written in C#/Xamarin with native UI ...

memset() copies bytes faster than copying them one at a time in a for loop. However, is there an equivalent for struct arrays, if I need to fill a struct array with a repeated value? Here's my current code. for (unsigned int i = 0; i < 4096; i++) { Voxel.Material[i] = (struct Instance){.ID = ...

This program is my attempt at solving the below problem: We have a function which is going to be called by multiple threads. The problem is to find a way to limit the number of times this function is executed per second given that we don't have a control over: a) The number of threads calling thi...

Im curious if my approach is correct in this case: I would like to get two DateTimes from a public property, but one of the dates i want them only if a user has purchase a feature or if he has not activate a switch, otherwise i want to get the same DateTime twice. More specifically, the way im ge...

First of all, I wasn't sure whether or not to post this on StackOverflow, because I'm simply asking for an explanation of how this code works, not necessarily improving it. My professor has given us this code snippet which we have to use in order to generate random numbers in C. The snippet in qu...

I have the following query which retrieve all those who have ordered a book_id n°10 and but never ordered the book with id n°1. http://sqlfiddle.com/#!9/1bb9e8/44 |user_id | book_id | | 1 | 1 | | 1 | 2 | | 1 | 3 | | 2 | 1 | | 2 | 10| | 2 | 9 | | 3 | 5 | | 3 | 10| | 4 | 6 | | 4 | 7 | | 4 | 10| | 8...

I created a program that simulates World of Warcraft combat. It used global variables intellect, crit_rating, etc. to time how quickly someone would do a certain amount of damage. Later, I decided to make this into a web app wherein the intellect, crit_rating, etc. could be manipulated by the web...

I sometimes need to merge some big PDF files. Looking around I decided to use PyPDF2. All files are in the same directory as the script. The code works as intended and was tested with 5 small PDF files. I found many variations and decided to write this one myself: import glob from PyPDF2 import P...

I have a .NET application with a .config file that has content like this: <appSettings> <add key="SmtpConfiguration" value="Db" /> </appSettings> Inside the application's code I define an ISmtpConfiguration interface and several different implementations. DbSmtpConfiguration gets configurati...