All Questions
77,256
questions
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13
views
Encryption implementation for websocket chat (RSA + AES)
For learning purposes I am trying to make a encrypted chat in Python using Websockets. I am using AES and RSA to make it safe.
The idea of the chat is that it's a group-chat. Users can join a chat by ...
- 101
0
votes
0
answers
3
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Are there other means to apply place holders to an array in a loop for pdo statements for search functions with unknown numbers of keywords in php
I'm a newbie to php and other programming for that matter.
I'm doing this simply to learn. Figured the code could be used to search through a police database or something.
The statements are Microsoft ...
-1
votes
0
answers
22
views
Hashtable implementation in C
I start to implement the function hashtable insert :
The function must be inserted by adding the node to the correct linked list if the key does not exist, or by replacing the value of the correct ...
- 1
2
votes
2
answers
81
views
Building a UITableView with fixed number of cells progammatically
I am building this pet project with UIKit. The App's main goal is to keep track of my daily expenses.
The AddExpenseViewController is responsible for capturing user ...
- 101
1
vote
0
answers
15
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Advent of Code 2023, Day 8 Part 1 - Beginner Rust Solution
Context
I'm doing Advent of Code as a way of learning Rust, and have a working solution to Day 8, Part 1. This involves moving between nodes, starting at AAA and ...
- 11
1
vote
1
answer
20
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Advent of Code 2023 day 1: Trebuchet (Part 1 and 2)
Part 1:
The task involves analyzing a calibration document containing lines of text. Each line represents a calibration value that needs to be recovered by extracting the first and last digits and ...
- 50.6k
6
votes
4
answers
766
views
Matrix Class Implementation
I have written a minimal matrix class. I would like to utilize the latest C++ features, follow best practices, and utilize multi-threading in some of the operations. I have also setup a GoogleTest ...
- 10.3k
2
votes
2
answers
41
views
How to reduce the build time of Docker image layer in GitHub Actions?
I have a Dockerfile with ubuntu:22.04 as a base image and a manual Python installation(specific version i.e., 3.11.1) layer which takes a long time.
Approach 1:
...
- 17.1k
1
vote
0
answers
91
views
Advent of code 2023 day 3: count engine part numbers - in pure Bash
Yes I'll keep doing this until I cannot be bothered to do it in Bash ;-) (Well today is probably the last one ;-))
Part 1
To paraphrase the puzzle, given some input ("engine schematic") like ...
- 111k
2
votes
0
answers
36
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Advent of code 2023 day 6: Count ways to win boat race - in pure Bash
Part 1
To paraphrase the puzzle, given the times and record distances of boat races like this:
Time: 7 15 30
Distance: 9 40 200
That is, the first ...
- 111k
2
votes
0
answers
34
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Advent of code 2023 day 7: Ranking Camel Cards hands - mostly in Bash
Part 1
Today's task is to rank hands in a Camel Cards game and compute the total score.
In Camel Cards, you get a list of hands, and your goal is to order
them based on the strength of each hand. A ...
- 111k
0
votes
0
answers
6
views
Advent of code 2023 day 8: Path finding in the desert - in pure Bash
Part 1
In today's task, a network of paths is defined like this:
LLR
AAA = (BBB, BBB)
BBB = (AAA, ZZZ)
ZZZ = (ZZZ, ZZZ)
The first line ...
- 111k
0
votes
0
answers
12
views
Looping without looping statement
An alternative to loop statements handy when the domain specific language (DSL) prevails the programming language technicalities, is implemented with two instances calling each other while running ...
1
vote
1
answer
27
views
Advent of Code Day 8
Is there a more idiomatic (and concise) approach for the count_steps method?
i.e. without using a while loop and incrementing a variable
...
- 17.1k
14
votes
6
answers
5k
views
Computing the square root of a 64-bit integer
When sieving primes up to some 64-bit number n I need to determine an upper bound for the greatest potential factor of n, which ...
- 30.4k
1
vote
1
answer
34
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Python optimization search pythagorean triplets
I have an optimization problem. Be it about code, algorithm or maths, that, i don't know.
My goal is to find pythagorean triplets satisfying a = b + 1 or a = b - 1.
m and n are the triplets generators....
- 72k
1
vote
1
answer
146
views
Efficient Connection Pooling in ODBC-MSSQL with Rust (odbc-api)?
I want to connect to MSSQL using ODBC (odbc-api) at the beginning of my server application created with hyper.rs.
I want to have a connection pool and obtain a connection within each request, which ...
CommunityBot
- 1
-2
votes
0
answers
25
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Im new to Programming and my code doesnt work [closed]
This program should output the smallest array index of the most common letter in the string and it works for some inputs but for example "zzz" and "AAA" outputs 1 instead of 0 :(
<...
- 1
3
votes
2
answers
406
views
Hardware API, primarily for Error handling
I have a piece of equipment that I am interacting with. The manufacturer provided an SDK and some simple examples of how to interact with the device. However, I need to write an API for interacting ...
- 750
1
vote
0
answers
10
views
Nodejs Websocket pulling new data from InfluxDB
I have a nodejs server with websocket which is pulling the new data from InfluxDB and send it to client.
The piece of code is this:
...
- 111
0
votes
0
answers
46
views
Summing Duplicates Across Sublists in a Nested List [closed]
I hope my message finds you well. I am seeking your expertise and feedback on a specific issue I have encountered in the repeat_sum function within the codebase. ...
0
votes
0
answers
19
views
Advent of Code 2023 day 1: Trebuchet in JS, part 2
The task involves analyzing a bunch of lines containing lines of text. Each line represents a calibration value that needs to be recovered by extracting the first and last digits and combining them ...
- 33.1k
1
vote
1
answer
47
views
Python Runtime Config
I am implementing runtime configuration for a python package. I am doing this in mypkg.config.__init__.py. The idea is to load the configuration from a JSON file ...
- 17.1k
2
votes
1
answer
143
views
Python integer optimization with PuLP involving polynomials that I think can be faster
I have a problem where we are given multivariate polynomials in variables like y_i and z_j and the goal is to express them as sums of products of terms of the form y_i-z_j with nonnegative integer ...
- 59.1k
1
vote
1
answer
37
views
Advent of Code 2023 day 1: Trebuchet in JS
The task involves analyzing a bunch of lines containing lines of text. Each line represents a calibration value that needs to be recovered by extracting the first and last digits and combining them ...
- 21.6k
4
votes
1
answer
253
views
Advent of Code 2023 day 1: Trebuchet
Part 1:
The task involves analyzing a calibration document containing lines of text. Each line represents a calibration value that needs to be recovered by extracting the first and last digits and ...
- 33.3k
6
votes
2
answers
1k
views
Advent of code 2023 day 2: count possible qube games - in pure Bash
To paraphrase the puzzle, Santa takes a walk with an Elf, and they play a game involving a bag of colorful cubes. In each game, there is an unknown number of each colored cubes in the bag, and the Elf ...
- 111k
5
votes
1
answer
149
views
Advent of code 2023 day 1: count trebuchet calibration numbers - mostly in Bash
It's that time of the year again!
Although there's no more Winter Bash, we can still have all the Bash we want in winter ;-)
Part 1
To paraphrase the description:
For each line in the input:
Find ...
- 111k
5
votes
1
answer
147
views
SQL: How to only look up unique values
I have a piece of code that does what I need. But it looks complicated and messy for what it does. Is there a simpler way to look up the member CIN unqiuely without having a create a sub-query?
Get ...
- 17.1k
97
votes
6
answers
66k
views
File Browser GUI
FileBro is a basic GUI based File Browser.
FileBro Functionality
Directory tree - shows the file system roots at start-up, but is otherwise built lazily as the user browses around the file system. ...
- 26.9k
1
vote
1
answer
61
views
Managing users via SQLAlchemy DB model (updated)
I am currently in the process of writing a system application that will be operated by multiple users. This will require individual users to access the application while limiting access to those that ...
- 17.1k
3
votes
1
answer
144
views
Re: C++ 4X Game
This post is regarding the revamp of this post/project I did about 8 months ago. I took a lot of the advice from the suggestions provided (thank you by the way), and fixed the project up, so I'm ...
- 83
4
votes
1
answer
217
views
A simple mmap(2) wrapper
I've written a wrapper for the mmap syscall. It's quite limited in functionality at the moment (there are lots of flags to support) but it's sufficient for mapping ...
- 72k
0
votes
0
answers
33
views
Stopping a running thread without testing variables
The Thread stop method is deprecated. The recommendation is to stop running threads by updating a variable.
Many uses of stop ...
1
vote
1
answer
75
views
Extra 0's after rounding
In a project i am doing for AP CSP, I am attempting to make a calculator that can do sig figs, and there is always a ton of extra 0's after i round the number as seen in the picture i attached
the ...
- 17.1k
0
votes
1
answer
20
views
Copying data from a network share to another
The code below copies large amount of data. It does so in 2 steps. I was wondering if both step1 and step2 can be done in parallel.
...
- 17.1k
-3
votes
0
answers
11
views
Trouble converting recursion to dp [closed]
I am stuck in what looks like minor but annoying issue for the minumin sum path leetcode question:https://leetcode.com/problems/minimum-path-sum/
below is my code:`class Solution {
public:
...
- 1
3
votes
1
answer
49
views
Fuel Gauge Python
I was wondering if my code is good or maybe if it could be written better or simpler.
The task was to implement a program that prompts the user for a fraction, formatted as X/Y, wherein each of X and ...
- 17.1k
5
votes
2
answers
1k
views
Advent of code 2023 day 4: Count scratchcard points - mostly in Bash
Yesterday I thought was the last day of Advent Of Code 2023 that I do in Bash. I was wrong. I'm not even sure anymore that today will be the one. We'll just have to see tomorrow!
Part 1
To paraphrase ...
- 111k
1
vote
0
answers
20
views
AutoKeras Network Architecture Search (NAS)
I have two directories, train_data_npy and valid_data_npy where there are 3013 and 1506 *.npy...
- 585
-1
votes
0
answers
31
views
Function to find successive primes with sums of previous terms as divisiors
Is this a successful piece of code and an appropriate way to rephrase the mathematical notation? Currently it does not find pairs, so I wonder how to approach reasoning deductively about this problem ...
- 23.1k
3
votes
2
answers
433
views
Graph library including minimum spanning tree using Kruskal's Algorithm
I've only ever made small programs. So, I've tried to make something large but easily reusable/extendable. Posted below are the beginnings of a graph library I've written up.
One particular point I'd ...
- 65.3k
2
votes
3
answers
104
views
Redouble each occurrence of char recursively, and add n
In following of this question, I would like to have a second review.
The exercise is to write a recursive method that takes a String and a ...
- 332
1
vote
1
answer
9
views
Start script for several Spring Boot services
I have several Spring Boot and Angular applications/microservices that form together a whole application. As it is tedious to start them via the terminal, I've written the following script to perform ...
- 72k
2
votes
1
answer
59
views
Finding the longest path on a grid with obstacles from the top to the bottom
I have a rectangle of . (platforms) and # (obstacles). I can start at any platform in the top row and go to the left, right or ...
4
votes
2
answers
939
views
Javascript: Profile Lookup from freecodecamp
This is my answer in freecodecamp "Basic Javascript: Profile Lookup" (third day trying javascript using Udemy and freecodecamp).
My problem with the code is the huge number of lines on my ...
3
votes
3
answers
1k
views
Concatenating optional strings in Scala
I have two optional strings, any of them can be None. I want to create their combination with a delimiter between them if they both exist.
I expect to be able to come with a more concise and nicer ...
- 196
0
votes
0
answers
27
views
Train Dispatcher in Java [closed]
I am developing a simplified train dispatch system as a final assessment for my CS major, first semester. I have a user interface class, with the TrainDispatch instance as a UI class variable.
...
2
votes
1
answer
1k
views
Bootstrap form with floating labels
I have turned a "classic" Bootstrap form into a "floating labels" form.
For this purpose, I had to move the labels below the form controls.
...
- 1
5
votes
1
answer
454
views
Point distance program written without a framework
I have been developing a cross-platform game based on open C libraries (mainly glfw) with a direct focus on Windows development. The beginning of my programming career taught me familiarity in ...
CommunityBot
- 1