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I wrote a simple time measurement library in C++

welcome everybody I wrote a simple code to measure time easily Features Easy include and just call timeit() Fast It just calculates the average time in the loop ...
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  • 351
-1 votes
0 answers
5 views

unexpected indent error in while loop ( in python) [closed]

hi I am writing a code to integrate schrodinger equation using Numerov method, how ever in one code block I am having "IndentationError" which says 'unexpected indent'. here is my code below,...
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  • 1
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0 answers
9 views

LeetCode - LRU Cache by rodde

I have solved this LeetCode problem. Depending (perhaps) on the server load, I once scored the following performance figures: My code follows: ...
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  • 25.7k
2 votes
1 answer
7 views

C generic dynamic array (using preprocessor)

I wrote a generic dynamic array using the preprocessor. My use case for it is a compiler I'm writing that uses dynamic arrays a lot, and my current void pointer implementation is becoming a bit hard ...
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2 votes
1 answer
14 views

the mini js tool library

hello everyone i am a newbie js "developer" and for practice i created a super mini (8 methods) javascript tool library. I need you to give me feedback "should I keep expanding my ...
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  • 23
1 vote
0 answers
19 views

Simple diff utility in Java using OOP

(Previous and initial iteration lives here.) Now I was able to spare some lines by putting diff related state in an object. Also, I relied on Files.readAllLines, as ...
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0 votes
0 answers
13 views

Singleton Design pattern: what is the best implementation

I can write the 2 following implementations but was wondering what is the best implementation: the first one require class methods and class variables (common to the instances which are the same). <...
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  • 273
0 votes
1 answer
7 views

Improving multiple FirstOrDefault statements on same collection

I'm having multiple FirstOrDefault() statements, in this case 2, on a collection. ...
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  • 101
2 votes
1 answer
10 views

TFunction: std::function replacement for event system

I've been trying to implement delegate for my event system. I thought that maybe std::function can do the trick for me, but it turned out to be not comparable, so what i have end up doing is this, std:...
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  • 21
-1 votes
0 answers
11 views

Please correct any misunderstandings ive made when commenting what this code does [closed]

Hi im studing zed shaws learn python the hardway, he says i must go and read other peoples code and comment what i think it does please can someone review it for me and tell me if i've misunderstood ...
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2 votes
1 answer
24 views

Find perfect squares within a given range

I managed to make this work without breaking the program if you enter some weird numbers in the range. The thing is I know this could have been done simpler and smarter. I can't really see how right ...
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1 vote
0 answers
44 views

C++: STL-like AVL Tree (+ benchmark vs. my red-black tree and std::set)

AVL trees and red-black trees are most famous balanced binary search trees. I've always wondered "Why do all major C++ standard library implementations use red-black trees as their ordered ...
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  • 1,199
0 votes
1 answer
17 views

An algorithm that minimizes the number of ingredients necessary

I am working on a code that will minimize the number of ingredients necessary to make some dishes. Each dish can be prepared in an arbitrary large number of ways, with combinations of two ingredients. ...
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1 vote
0 answers
26 views

Integration loop over multiple doping and temperature levels

I want to perform some calculations on a large dataset. The code can be found below, where I want to calculate the values for 'results_nr' over a large loop (1000 x 910) values. Can you help me out ...
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1 vote
0 answers
17 views

Python - dictionaries and making a list of student enrollments

I'm new at Python and I have to make a list of student enrollments and use dictionaries within a class. I want to manage a list of exam enrollments. To do this, it is necessary to create the ...
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1 vote
0 answers
20 views

Maze generator in C (part 2)

Maze generator in C. This is part 2 of this I changed everything I was told I should in the part 1 of the review. I also added functionality to be able to step through the generation of the maze, or ...
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0 votes
0 answers
14 views

An OpenGL backend for displaying a framebuffer of an emulator

Motivation I'm making an emulator. It has its own software framebuffer of size 320x240. Each frame is prepared internally from the emulator, and I just need a way to display it on a window, scaled to ...
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  • 411
1 vote
0 answers
10 views

Recursive path drawing in Latex

I have some diagrams I'm drawing using tikz and I'd like to make a macro to draw them for me. I will describe it fully but here are some examples so you can follow along: The diagram has a number of ...
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0 votes
1 answer
15 views

Treat a list by generating a dataframe and sending the data to function via multiprocessing

To collect the list with the data from an API, I need to do these steps: ...
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5 votes
2 answers
520 views

Simple diff utility in Java

(See the next and second iteration here.) I have this toy implementation of the diff utility in Java: ...
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  • 25.7k
2 votes
1 answer
21 views

A simple logging library in C

I've created a simple logging library in C which I can use in my other projects. I wanted to get started in software development using the C language, and this is my first attempt at writing something ...
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0 votes
0 answers
12 views

Perform data cleansing on objects that pass through a data pipeline

I have a data pipeline where I need to perform data cleansing on objects that pass through the pipeline. As a simplified MRE, the code below creates an example object and then simulates a data ...
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  • 133
2 votes
1 answer
33 views

Download and print a CSV report based on user input

I'm learning Java and I did one exercise that consists in reading the input of the user (name of the network and date of the report) and return the csv that was inputed by the user. I know that the ...
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4 votes
1 answer
160 views

Converts image from one type to another

This script first looks through a specified folder path for image files that have a given extension and removes any periods that might be in those file names. It also adds those sanitized file names ...
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-1 votes
0 answers
21 views

Perfect forwarding Constructor for class with 2 strings using c++20 concepts [closed]

CppCon 2018: Nicolai Josuttis “The Nightmare of Initialization in C++" did this with std::enable_if at the end of the talk (hopefully the link will remain ...
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  • 7
1 vote
0 answers
14 views

Database Repository Class Using the Decorator Pattern

I have a base repository class that's using AWS DynamoDB, and I have also implemented a class named StocksRepository I'm wondering if I should create a StocksRepositoryWithLogs and ...
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  • 21
3 votes
1 answer
43 views

Fast way to compute a^d mod n

For a Miller-Rabin primality test I need a fast way to compute a^d mod n. Where a is one of 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, ...
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0 votes
2 answers
24 views

Decrement from an array of integers equally for all elements > 0

There are x distribution centers each with y number of products. Each day only an equal amount from all x distribution centers with remaining product can be shipped. Calculate how many days it would ...
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  • 111
3 votes
1 answer
271 views

Maze generator in C

Iterative dfs Maze generation program in C. Details about the algorithm: Example run of the program: In my implementation: Each cell has: 4 neighbors [left, right, top, bottom] 2 walls [right, top] ...
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0 votes
1 answer
10 views

How to speed up truncating text to specific word count in nim?

I have a web application, as part of it I regularly have to send out "overviews" of records in a database, which contain shortened excerpts of a description-text of that record. What the ...
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1 vote
1 answer
39 views

Is there a better way to traverse a list of tree nodes efficiently

I am wondering if there is a better way to traverse a list of trees. Here is my current algorithm: Collect the parent IDs in a Map Traverse all the groups and find ones where their ID is not in the ...
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2 votes
2 answers
43 views

Internet Protocol Version 4 Datagram - Checksum Calculator

I could not find an implementation of the IPv4 header checksum calculation. So, I decided to made one as defined in RFC 791. I made use of the "newer" ...
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  • 1,023
2 votes
1 answer
32 views

Find the column number in a spreadsheet according to the letter that identifies it

Google Sheets maintains an identity for each column that follows this pattern: col 1 = A col 26 = Z col 27 = AA col 52 = AZ To know the column number according to ...
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0 votes
1 answer
25 views

Google App Script Automation for User Onboarding

Background I am a relatively new developer(> 2 years coding) working as an intern for a smaller company, as part of a now 4 person team. We had two other team members, one our system admin and the ...
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1 vote
1 answer
41 views

JS function to check if a date is in the correct format

I wrote the following JS function to check if a date comes in the right format and can be used further down in the application ...
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  • 251
0 votes
0 answers
13 views

first React project - Lights Out game

I am working my way through a React tutorial on Scrimba (I am not finished yet). I got to a certain part that inspired me to try a project on my own. I made a game of Lights Out. If you've never heard ...
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5 votes
1 answer
160 views

Evaluating math terms as nested lambdas instead of expression tree

I need to store some math terms. Originally I would use a tree to do it, especially if parsing strings was involved. However, since the expressions are built within the code and need not be parsed, I ...
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1 vote
2 answers
40 views

How to implement a daily streak counter in JavaScript?

I want to implement this in a SQL database schema, but am doing it in JavaScript first to make sure I have the logic right. Basically, I would like to track "actions" a user performs. If ...
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  • 329
1 vote
1 answer
67 views

A C++ Job Manager Class (Rev 1)

This is a revised version of the JobManager class originally posted here. The revisions made were centered around: Encapsulating the ...
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0 votes
0 answers
42 views

Is the given code optimized ? Can it be optimized? [closed]

I have a dashboard where I have to show the Charts and graphs for weekly sales(7 days before including today) , monthly sales(12 months before including this month) and profit/loss got in 7 days with ...
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0 votes
0 answers
10 views

Unit test for a React click-counting component

Take this basic component using state: ...
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0 votes
0 answers
41 views

Best way validate object in c# with "Manager" class [closed]

In my project I have an class named Precatorio ...
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1 vote
2 answers
40 views

Check if a new movie session can be inserted

I have this function in my code, this way I validate if a new movie session can be inserted, it works, but I wanted to find a better way to do it. ...
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  • 11
1 vote
1 answer
45 views

Is this PDO query okay to use in PHP OOP?

Im new in PHP OOP so if anything is wrong I apologize. If I want to do a simple SQL query, do you think this code is good? Is it safe to use? Or am i doing something wrong? ...
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1 vote
0 answers
32 views

Program for monitoring file in Combined Log Format

After encountering a suggestion that monitoring a log file for a webserver could allow for the implementation of automatically analyzing and handling of certain events (that might require altering ...
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1 vote
2 answers
27 views

Function that get 3 word for strings, than combine them to 1 string and finally print the string in reverse

I'm learning C and I got a task to make 3 function. The first get 3 addresses of string, get 3 words from the user, and enter into the addresses. The second get the 3 addresses of string and combine ...
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2 votes
1 answer
63 views

Commented Parser Combinators in Lisp-style C

I've attempted to remedy the issues outlined in the answer to my previous question. I've added several hundred blank lines to better illustrate the grouping of functions and generally make things look ...
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  • 1,906
0 votes
1 answer
35 views

Common interface for fixed-length and variable-length lists in C#

I am working on library project in which I am reading and writing binary files that have own file format structure. In that structure there are variable-length and fixed-length elements. My approach ...
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  • 185
1 vote
0 answers
57 views

Smallest interval whose sum exceeds a threshold

In a non-negative 1D array x, we wish to find the shortest slice such that x[start:end] > threshold, with constraint that <...
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1 vote
0 answers
16 views

Nodejs - Javascript buffer that takes in uint64, enum and string data as input

I am writing a nodejs program that adds some data into a buffer, before it is streamed. The data types are listed in the comments of the code, and there are fixed places in the buffer that these data-...
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