I wrote a simple quadratic equation solver with Ruby to help me solve quadratic equations. Please tell me what I did right or wrong, and what I can do to improve it.
#!/usr/bin/ruby
if ARGV.length != 3
STDERR << "Usage: #{$0} <a> <b> <c>\n"
exit 1
end
a = ARGV[0].to_i
b = ARGV[...
This question is related to my previous question on the brute-force search
for a solution to an unsolved mathematical inequality. I thought that since this question pertains more to the use of multithreading, it should be a separate question.
The following code, tested on Ubuntu 16.04, compiles...
I pulled this out of my code bucket and dusted it off earlier today in response to a post over on SO that made me cringe. This was originally written to highlight changes in Excel cells in real time via Worksheet_Change, so it is designed with an eye toward raw speed to avoid blocking the UI. Be...
I've been working on a project (link) to download a spreadsheet of known ransomware and properties and turn it into json so I can better consume the information within early detection projects.
I'm new to python - what can I be doing better? The destination json I'm converting can be found here....
I'm currently working on the following assignment for my CS class. We are supposed to create an infix class for this assignment but I am not completely sure on which functions I should need and how to code it.
Programming Problem 6 (Modified)
Consider simple infix expressions that consist o...
I am working in a rest-assured tool to automate API's. I am using java language. I did a sample API automation. I want to improve. So I want to know the best practice for rest-assured API automation. Here is my code.
package com.restapi.test;
import com.jayway.restassured.RestAssured;
...
I want to make a nav that look like this
<nav class="socialmediaicons">
<ul>
<li>
<a>
<img>
</a>
</li>
</ul>
</nav>
using appendChild() method and this is what I've done:
the myNode is the nav tag which has already been created via HTML.
var myNode = docume...
I'm using OGR API for creating geographic areas and sending/receiving data using that API.
I have created a blocking synchronous communication for creating features add them to the queue, send them over the network.
What I want to know about, is how would one design an async communication usi...
Consider these functions that allow to convert std::chrono::time_point to/from std::string with a predefined date-time format.
constexpr size_t log10(size_t xx) { return xx == 1 ? 0 : 1 + log10(xx/10); }
template < typename Double, size_t Precision = std::numeric_limits<Double>::digits10, typen...
I made an object oriented fractal tree in javascript using the p5 library, it consists of three files:
Fraternal Tree.js
branch.js
flower.js
Here is the github repo with the source code. All the main work is done in Fraternal Tree.js
I want to know if I am following good coding practices and...
I want to use libusb library in my C++ application. I have created classes which wraps libusb functions. You can see that libusb API is splitted to 8 sections:
http://libusb.sourceforge.net/api-1.0/modules.html
For me the most necessary sections are:
Device handling and enumeration
Synchronou...
I use a circular linked list to implement a queue, and it only holds one last (note that last links to the first, not null).
public class Queue<T> {
private Node last;
private int n;
private class Node {
T value;
Node next;
Node(T t, Node n) {
va...
I am using the following link as a reference to pandas, so that I can calculate exponential moving average for pandas data frame.
http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.ewm.html
My data frame looks like as this:
Price
2017-01-01 1
2017-01-02 ...
Ok, so I have this code:
int main(int argc, char *argv[]){
ifstream answers(argv[1]);
ifstream candidates(argv[2]);
for (string s; getline(answers,s);){
for (string h; getline(candidates,h);){
if (!h.compare(h)){
cout << h << ":" << s << endl...
I have implemented a solution to flatten an array of multiple levels in Javascript. I am just a newbie so forgive any mistakes. Could someone give me any tips to improve the code?
function streamrollArray(arr) {
var copyArr = arr;
var to_return = [];
while (true) {
if (copyA...
I have 2 groovy sql resultset, I need to combine the result set so that project_no should be unique and case_no can have multiple elements if there is a duplicate project_no
Below are the 2 groovy sql resultset
[[project_no:0-10001,case_no:00492268],[project_no:0-10160,case_no:01957580],[projec...
I’ve solved UVA Problem 100: The 3n + 1 problem . In short, the task was to write a program that calculates a maximum of Collatz sequence lengths for any given range of starting values.
My program:
#ifdef ONLINE_JUDGE
#define NODEBUG
#endif
#include <vector>
#include <unordered_map>
#include <...
Is this code correct for anagram checking using bitwise operation.
#include<iostream>
#include<string>
#include<bitset>
using namespace std;
int main(){
string base_string = "cinema";
string test_string = "dinema";//"iceman";//"cinema";//"dddddd";
unsigned char mask = 0;
for(int i=0; i < bas...
At work there is an input-system where customers are able to specify weekdays and a starting time for an event. The weekdays are integers in the range from 1 (Monday) to 7 (Sunday).
After the customer has given the needed input, I need to calculate the next possible DateTime for the event. If the...
I have a list of dictionaries, which I want to make round robin sorted.
sample = [{'source': 'G', '"serial"': '0'}, {'source': 'G', '"serial"': '1'}, {'source': 'G', '"serial"': '2'}, {'source': 'P', '"serial"': '30'}, {'source': 'P', '"serial"': '0'}, {'source': 'P', '"serial"': '1'}, {'source'...
I would like to ask about your opinion about my code. The idea is simple: I designed my own protocol, where client asks server about the image, and the server sends the image, following the below steps (this is the actual protocol I wanted to implement):
CLIENT ...
This service has a lot of duplicated code and is difficult to test. Shown below in abbreviated form. I am fairly new to angular.
(function(){
angular
.module('MyModule')
.factory('MyService', MyService);
MyService.$inject = ['$http','$q'];
function MyService($http,$q){
var se...I am using the below code for cropping faces from images in a directory
import cv2
import glob
import os
def facechop(image,imgname):
facedata = "haarcascade_frontalface_default.xml"
cascade = cv2.CascadeClassifier(facedata)
img = cv2.imread(image)
minisize = (img.shape[1],img...
I have some code that is repeating within these two event functions :
CKEDITOR.instances.editor.on('instanceReady', function() {
CKEDITOR.instances.editor.on('change', function() {
that I think can be placed into their own function which can be called within the two events.
Repeated code:
ht...
