I wanted to practice functional programming (FP) without using any library but using vanilla JS only. So I took a problem from Advent of Code (the 1st part of Day 6):
http://adventofcode.com/2017/day/6
A debugger program here is having an issue: it is trying to repair a
memory reallocation...
i'm currently working on and improving an existing system i've inherited from my predecessors (programmers before me) here on the company i'm working for.
so basically, they have this system - an inventory/tracking system to be precise. the concept is to encode all barcodes to the system (which ...
How can I go about refactoring this so that the duplicate code is eliminated?
public executeOrdersHelper(order: Order){
var currentMarketPrice: number = this.marketData.get(order.symbol);
var randomQuantity: number = getRandomInt(30);
var fillAmount = Math.min(order.quantity - orde...
I have C# matrix multiplication with basic optimisations, including:
row*row multiplication (means, a = b * cT)
(big performance boost) Direct pointer addressing in the loop, instead of having many like *(a + offset) <- (small performance boost)
All code is numerically fine now. I'm wondering...
I am making some financial app for Win32 platform (specifically, XP). It is a bit outdated,
///Retrieve user-hash and user salt.
const char sql_parametrized_query[] = "SELECT * FROm users WHERE username = ? ;";
sqlite3_stmt *stmt;
if ( sqlite3_prepare(
db,
sql_parametrized_query, ...
I'm just going to ask about this 4 Level Deep For Loop of Mine though i put it inside of the StartCoroutine();
Here is my code : please don't judge me yet
void Update()
{
if (tzPlayInfo.Instance.BLOCK_GAME_FLOW == false)
{
CameraScriptsAir_1 = this.transform.GetChild(0).GetChild...
I am doing some work on a codebase which has a BlockingCollection acting as a cache.
private readonly Dictionary<string, BlockingCollection<ProductModel>> _cache;
The _cache is eventually instantiated and a number is set to indicate how many instances (BlockingCollection) we wish to add to the...
I should initialise the startup variables before serving the requests. Few of my variables could be initialised from local property file (say init.properties) and few would get initialised from an url say (/getProperties).
i) I should be able to serve requests from my engine only when all my var...
Very frequently I have to load many small tables into memory. I was tired of writing a repetitive code, hence I have wrote following.
TableData Class: To load the table into this object
public static class TableData {
List<String> headerNames;
List<List<Object>> data;
public final ...
For one of my personal projects, I had to make an algo to generate set of combinations.
I've finally succeed to get one.
The problem is that this algorithm uses 2 recursives generators; that takes a lot of time to compute.
I think there can be a way to convert this into a non-recursive algorithm...
This question was asked 12 hours ago. But it just appeared a short moment ago on the review queue as a first post entry. How/why this delay happened?
import math
n = int(input())
while n != 0:
n = (n - 1960) / 10 + 2
m = pow(2,n)
i = 1
while m > 0:
m -= math.log(i,2)
i += 1
print(i - 2)
n = int(input())
Can someone please help me time optimize this code. Im doing ti for a site that checks my code but i...
Intro
Multithreading tools exist in Excel - often to run macros in multiple instances of Excel, or to convert macros to vbscripts that can run independently. However I've often come across projects where I'd like to delegate multiple tasks out to async processes, and creating multiple instance...
Here is the code that make 3 HTTP requests in underlying methods to get information either input PIN ID is existing in one of 3 products, which offer REST API for it.
It creates and awaits 3 tasks. I would like to double check either these tasks are executed in parallel or sequentially
public a...
I'm using ArrayList<Nodes> to store adjacent nodes, and ArrayList<Integer> to store the corresponding weights of the vertices. Is this efficient if I only use it for small inputs? Is it efficient for large inputs as well?
class Node {
public ArrayList<Node> adjacent = new ArrayList<Node>();
...
I'm currently working through the Project Euler Problems using HackerRank to evaluate the code and I'm stuck on the 7th Problem.
"""
By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.
What is the 10 001st prime number?
"""
import pytest...
I wrote a primality test for UniHaskell1 however, it seems complicated in terms of conditionals.
Here it is, rewritten to not use Unicode and other functions in the code:
-- Primality predicate
isPrime :: Int -> Bool
isPrime 2 = True
isPrime 3 = True
isPrime n
| n `mod` 2 == 0 = False
...
Below is my code for building the collatz sequence so a given number. I'm trying to make the function tail recursive and I believe that this impelemtation is tail recursive but I'm not yet so comfortable with F# that I can convince myself 100%.
let collatzSeq n =
let collatz m =
mat...
Yesterday, Jon Skeet’s reputation on Stack Overflow passed 1,000,000. ONE MILLION. Those of you who are highly engaged with the Stack Overflow community probably have a general idea of a) who Jon Skeet is and b) exactly how amazing and ridiculous this statement is, but just to make sure we are all on the same page, let’s dig a little deeper. For starters, how many answers has Jon Skeet posted on Stack Overflow? Let’s look at Jon, together with the other 100 folks who have the highest reputation on our site. …
Below is a function that returns an object destined for a UICollectionView. Only problem is some of the images never showup or are not present. How would I filter out any articles without an image?
Or is it a problem with my downloadImage Extension (below the function)
@objc func fetchArticl...
I made a digital clock with the use of an RTC (DS3231) and an LCD (16x2).
Current functions:
Display time
Display date (different formats)
Display temperature (Celsius and Fahrenheit)
Display day of the week (English and Dutch)
Display week number
Display number of day in the year
Future functi...
I was looking at the REST API of StacMan and was wondering which design patterns have been used on this particular project. Also, I was wondering if the use of nested classes is good in such projects or its not a good approach?
here is the link of code https://github.com/emmettnicholas/StacMan
In my code I have Document class. The document has pages. Now I want to add the ability to check if there are any empty pages in the document.
Since the check can be time / resource consuming, I feel like Document.HasEmptyPages or Document.ContainsEmptyPages property is not a good path to choos...
Should we reference Objects to null in finally block while Objects are in local scope of method? What are the performance issues resolved by doing so?
code:
Map<String, Map<String, String>> getData(Map<String, String> params) {
StringBuilder query = new StringBuilder(); // Construct query ...
I wrote a function for drawing a table for data that comes from a file:
import data_manager
import os
table = data_manager.get_table_from_file('games.csv')
len_of_longest_name = 0
i = 0
while i < len(table):
if len_of_longest_name < len(table[i][1]):
len_of_longest_name = len(table...
Are there any algorithms in python to suggest a portfolio of stock with sum percentages allocated to them.
Example:
User will give amount of invest he wants to do, our algorithm should be able to suggest some interesting portfolios based on risk factor and with some amount of profit.
I am using the northwind example database to brush up my SQL server skills.
I want to select all the products ordered by the customer with the customer id 'Folko'.
My idea is to join the Orders table with the OrderDetails table on OrderID and then join the Products table with the OrderDetails...
I would like which Map Renderer is the best in the organization, clean to use? Between the two. I give an example
class MapRenderer {
constructor(mapID, cells){
this.mapID = mapID;
this.cells = cells;
}
draw(){
void(0)
// ... context.drawImage...
}
}
OR
exports.ma...
This is my client code:
(My server is very similar at the moment but I will upload it below this one just in case somebody wants to run it)
#include <SFML/Graphics.hpp>
#include <SFML/Network.hpp>
#include <thread>
int main()
{
sf::RenderWindow main_win(sf::VideoMode(800, 800), "Chatcy!");...
I'm trying to find data racing in this code. I don't know why. Please, review it and let me know what can I change.
class Engine {
public:
Engine(const unsigned int &fuel_amount, const unsigned int &time_interval) :fuel_amount(fuel_amount),
time_interval(time_interval), disconnect(fal...
I see that my first attempt at the question dynamic-way-to-use-string-array-as-index-of-object-in-javascript was outside the scope of what I should ask at Code Review, as the solution I was offered was not working for purpose, and not clearly explained. I have edited the question a lot, now inclu...
I'm trying to nail down on some best practices for automation testing with a large test suite.
What I have is a set of page objects (e.g. LoginPage.java, HomePage.java), which all inherit from AbstractPage.java (used for common functionality).
All the page objects are initialized in PageInitia...
I'm still learning the code languages that I used to create my form with. So I can't seem to figure out what seems to be the problem. Here's my code:
HTML:
<form action="" method="POST">
<ul class="form-style-1">
<li>
<input type="text" id...
I’ve been reading a lot recently on how to write clean PHP code. Specifically I’ve been reading the Design Patterns (Gang of Four) and Clean Code by Robert Martin – both excellent books.
What I’m wondering about though is how to use Exceptions properly. This is where I start to get confused. ...
I have a question about my post: Dynamic way to use string/array as index of object in javascript
I see that my first attempt at this question was outside the scope of what I should ask at Code Review, as the solution I offered was not working for purpose, and what the code needed to do was not ...
