I'm having a bit of an issue getting 2 random indices of an ArrayList and swapping them 30 times within the same array. I'm not sure if there is another approach I can take besides the one I have written here
public static <E> void shuffle(ArrayList<E> list){
Random rand = new Random(340L...
I'm knew to this place and new to web design in general. (I only started yesterday morning) But I have been reading up on various code and using it to make this web page for practice. I've learned a lot so far, but I've got a long way to go. So basically, my wife was sick of having to go to a bun...
I have a bit of code duplication and trying to figure a better way to reduce it. I'm looking for any suggestions. If this was in Java I could easily use reflection.
The code posted is a basic sample but hopefully, gives the idea of the duplication problem I'm having. The application is made up...
I have some (minimal) experience with the functional programming paradigm and I'm new to React.js and reactive programming. I'm trying to get a flavour for the React.js philosophy and I keep seeing references to functional programming, which has gotten me very excited.
I've been experimenting wi...
I have a code based on the following problem "Mapping phone numbers to names", the problem is that when they are going to process large data(+100.000) the program ends by timeout. my code and problem is this, how can I optimize my code to consume less time?
my code
function processData(inpu...
I developed a mini game in Java Swing for the University; I'd like to carry it on as a personal project. But before that, I'd like to know if what I've done so far is correct or not.
The game itself is a Java implementation of the Civilization Wars Flash game: there is a rectangular map with bui...
I made a little program that allows users to download a local copy of all their GitHub repositories for backup purposes. I've tried to write idiomatic Rust code, but I'm sure there are ways I could improve my code as a novice:
extern crate github_rs;
extern crate serde_json;
extern crate hyper;
...
I am new to thread programming in python. I am trying to read message from azure service bus, the message may or may not be present in the queue. So this is the logic I come up with
bus_service = ServiceBusService(
service_namespace='eventservice',
shared_access_key_name='key-name',
shared_acce...
I need to use regex for some stuff (mentioned in code comments) and wrote the following code, which works perfectly fine for my need, but I wanted to know if there was a way to improve this code?
Am I using re.compile correctly in this case?
import re
def regex(utterance):
utterance = utt...
I'm confused why you need to use try catch. I made a simply utils like this, and use it on my models' callback.
in my utils/error.js
module.exports.handleError = (err, errMsg, res) => {
res.json({
success: false,
msg: ${errMsg}. ${err}
})
}
Then I have this in my router...
I have an idea of two ways of handling error.
The first one:
(req, res, next) => {
if (!req.user.isOwnerOfCompany(req.user.currentCompany)) {
next(Boom.forbidden('Only company owner can add a bot'))
return
}
next()
}
The second one:
(req, res, next) => {
let ...
I'm writing a plugin to a text editor that will perform indexing of large code bases. The indexer will retrieve all function calls for a certain function (much like the functionality of full featured IDEs).
I know that using regex to parse languages is a terrible idea.
However:
It should be a...
I have several implementations of finding a repeated pattern and acting on the matching input if it is found.
So I want to find this <pattern><pattern><pattern>... or, using regular expression-like syntax: <pattern>* without any additional input before or after the pattern.
The additional req...
I have made a script to compare 2 objects in javascript.
My script is using for these types: undefined, null, object (not include an intance of a class), an instance of a class, class, NaN, Infinity.
Requirement: es6
let _x = Symbol('x'), _y = Symbol('y');
Object.prototype[_x] = function ...
Let's say I have the following array of Strings:
String[] rows = new String[]{
"",
"A",
"B C C",
"",
"B D E",
"E F G H"
};
As well as the following pairs:
String[] pairs = new String[]{
"H F"
"A B"
"A E"
"G B"
};
How can I calculate the smallest difference between the tw...
I have written a Class for LAN communication using an Agilent Oscilloscope.
I would like you to your opinion what I can change with this code, so it work without problem.
I would like to know your opinion, how I write this code better and efficiently.
I would like to change this class maybe wi...
I have a Spring app. I am new to front end development and to JavaScript, I am learning on the fly.
I chose to firstly go with javascript+JQuery instead of any framework, such as Angular or react, because my app doesn't have so many interactive features.
My script is mostly making AJAX calls t...
The below code takes a csv containing age, weight, height and prints the betas determined through linear regression to an output csv. It runs for 10 iterations using a different alpha for each, and prints the results of each iteration on a separate row of the output csv.
In particular, I'm wond...
I'm trying to search a bunch of .docx files but it runs very slow downloading the files into the stream. I'm sure there's a better way to write the search, (perhaps multi processing) but I don't know how to tune it up and speed the search up.
bool found = false;
Hearing h = new Hearing();
Stre...
Following exercise:
"Write a program that takes a number (of size 4 bytes) x as input, and then
reverses all the bits of x, and outputs the result. By reversing all bits we
mean that the bit with original location i will move to location 31-i.
Small example (for the 8 bit case):
...
Please see the code below:
public class Customer
{
public int _iD { get; set; }
public decimal _salary { get; set; }
public List<String>_assignedOffers { get; set; }
private AbstractValidator<Customer> _validator;
private IRulesOfferCalculator _rulesO...
I have been learning webdevelopment at Freecodcamp and have therefore been writing a lot of javascript by myself. They have a code-review chatroom, but the people in that chatroom seem to review the final product and not the code itself.
So, I am searching for some constructive criticism about ...
I was told to convert this to use null coalesce instead of checking for null. In all of the examples I found for null coalesce the "??" were used on the right side of the "=" sign and not on left. I'm not sure how to do that, or if there is a better way to check for null in this situation.
if ...
I am exploring Cordova and made a navigation bar. I created a new Cordova app and changed the following files:
www/index.html
<!DOCTYPE html>
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this ...
About a year ago I wrote a small library for drawing graphics on the windows command line. I mostly used it for small projects, like a raycaster and a raytracer. I just rediscovered it today, at the time of me writing this question, and decided that it needed a review.
The library is split into ...
I am working on a Leaflet app which will be displaying five layers with about 1k points each.
For our purpose (basically in order to locate most of the points near to a road) we don't want to use clustering; instead, we want to filter the amount of points on each zoom level, so there are never ...
I will begin this question with the disclaimer that it is homework but my code is written and working, I just want to know if there any ways in which I can improve what I already have. I want my programs to be as clean and easy to understand as possible.
My task is to Build two classes (Fractio...
