So to give some context: I have a relatively large repo with package.json files scattered across it for a bunch of unrelated projects. I just needed a quick script to run npm install for each of them. It couldn't have any dependencies that required an npm install. I figured running npm install ...

I am doing an online course for algorithm design an analysis, and am on the second week of the course. To complete the homework for the course, a implementation of the QuickSort algorithm is required. I have succesfully designed and run two programs which implement QuickSort, one which uses the f...

Unfortunately, my earlier question was put on hold due to "code that doesn't work", but I realised that there were a few black holes in my question, so here it is again, revamped. Ok, so, you probably have prior knowledge of the QuickSort algorithm, where you select a pivot and place elements l...

This is the first time I use OTP and Elixir. I created a multi-client echo server that also does a handshake. I translated it from 2 examples I found online. One was in Elixir and the other in Erlang. I would highly appreciate if you could tell me if what I did makes any sense. I understand most...

#include <pthread.h> void *myfunc (void *myvar); int main(int argc, char *argv) { pthread_t thread1, thread2; char *msg1="First thread"; char *msg2="Second thread"; ret1= pthread_create(&thread1, NULL, myfunc, (void *) msg1); ret2= pthread_create(&thread2, NULL, myfunc, (vo...

This code is calculating cycles for a problem: the answer to input (2,3,4) is 430, which is correct once the numbers get larger, I lose precision. For the input 5,5,3 it's giving 63884608.125 but it should give 64796982 For understanding what the problem is, and for seeing the maple code t...

I want to make the creation of the pack Uri for WPF resources more verbose so they are easier to read and less error-prone and I thought I implement it using the builder pattern. The base class for each builder (there are four of them) is the PackUriBuilder. It implements the UriKind logic, ch...

So, I've been on an adventure trying to learn NodeJs and put together a stack that I'd be happy to put into production if one day my team said to me "Let's build it in Node!". What we have here is your standard "Todo Webservice". Any and all feedback is appreciated, because I had never written mo...

I made a string class to be used as a replacement for std::string. It has all the find functions(find, rfind, find_first_of...), basic iterators(just begin and end, no reverse iterators), almost all the operators(+, +=, ==, [], <<), an insert ,erase and substring function, c_str() and it is dyna...

I am trying to implement nested cross validation with Python and I was wondering whether what I am doing is correct both conceptually and programmatically. I am hoping to use this nested cross validation to select the optimal hyperparameters (inner loop) and estimate the optimal model's performan...

From the comments given, Here is the complete code. From coding style, abstraction, encapsulation aspect, any more improvements?

There is an array, whose number(n) of elements I am the one to define. At first, each element has the value "0". I also have to define how many times I want that array to be "scanned". Say that I am running the array for the j-th time. If j==2, then all elements whose index%2==0, have their value...

A school asked you to design and implement a helper program to help the school's students in the mathematics class. The students need to know the laws used to calculate the area, the perimeter, and the volume (if exists) for some shapes. The used shapes are the circle, the rectangle, the triangle...

Create a class in java for a N x N array (matrix) which includes methods to do the following: 1- To check whether the immediate neighbhours of central element are same or not 2- To store immediate neighbours of central element in new one dimensional array Write and execute a java program to cr...

I tried to write some code namely "Circular doubly linked list" and I would like to use templates to do this. This is the first time I use templates and throws some exceptions. I would like to know if sth is badly writen, sth must be changed or I need to rewrite everything. Last but not least, ...

i am trying to check list of ip address to check if they are pingable or not as below .... my problem is that not all all ips are checked or in other words not all ips in the datagridview change their status to connected or disconnected... while when i replace that line of code in both case vRe...

I am having a problem with my program: it does as required but largest_blanagram() is too slow. I'm not sure whether the best way to speed it up is (1) try to speed up blanagram(), which is being called a lot (2) figure out a way to call blanagram() less. I'm not sure how to go about either of th...

I have a system that can put and get messages from a messaging middle ware(JMS), which is asynchronous. I need to provide an API that allows synchronous call, as in, when the API/method is called, it returns only when a response message is received or until a specified time out. In short, the cal...

Is it enough to handle reconnect only from close event? As far as i know (hence the name also) close will always fire no matter what error caused connection to be broken. Going through TLS node module doc there are methods socket.unref() and socket.destroy() with no single word about them. What t...

I made a Monte Carlo pi approximation program, that makes use of multithreading and a pseudorandom number generator I wrote (the one from big_wheel.hpp, which I tested using TestU01). Code: monte_carlo_pi.cpp: #include <iostream> #include <iomanip> #include <cstdlib> #include <cstdint> #include <

I am trying to do a Self-join and I generate this migration to make a correct primary, I'm not sure if this is really right. There is some problem here? class CreateFeedstocks < ActiveRecord::Migration[5.0] def change create_table :feedstocks do |t| t.string :code t.float :meas...

I have two process and for each process, I will get different GenericRecord object (this is open source classs) and I need to validate those GenericRecord object. This means I cannot use single validator as I have to validate different fields for both the process. For processA, I am using Valid...

The F# code below embodies the two specific questions I have. It is part of a working transformation utility, the entirety of which, including sample data, is in this gist: http://bit.ly/2i3kUwF. Generically, the task is: given a file of discrete records, compute a value for a subsequent record...

I was re-checking my answers for a Math paper on my laptop. I needed to verify my solution for a system of linear equations. Unfortunately, I found no quick way to do that. That's why I wrote a (hopefully) simple Python program (using NumPy) to do this job quickly. General comments on the code ar...

ECMAScript 6 introduced default parameters. The default value can be any expression, so you can use it to make a function throw an error when a parameter is not supplied: const mandatory = (name) => { throw new Error(`The ${name} parameter is mandatory`); }; const foo = (bar = mandatory('...

I have written the below code to invert a binary tree. Thus if the original tree is: Then the tree returned should be: /** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL),...

I have coded a working Tic Tac Toe game tree generator. It doesn't only generate the game tree, it also applies minimax values to each node. The code works fine on a board that already has 2 or more played moves but slows down significantly for an empty board. I'm thinking of implementing alpha-b...

Im trying to send emails. Actually its running but if I send 10+ emails its getting very slow when using Send(), so I started to try SendAsync() public Boolean sendSMTPMail(string subject, string body, customer[] recipients, string attachmentFileName = null) { string css = "<style>*{font-fam...