I looked up a tutorial and created a function based upon its script. It's essentially used so I can select dependent variables that's a subset of a data frame. It runs but it is very very slow. How would I flatten a nested for-loop such as this? I tried implementing an enumerate version but it ...

This is my account table: CREATE TABLE mwUser ( username varchar2(20) primary key not null, salt varchar2(64) unique not null, hashedpw varchar2(64) not null, email varchar2(320) unique not null ); When I register a new user with my java webservice I automatically generate a random ...

I have a procedure for looping through all files in folders and subfolders starting at a folder which the user can select. The user can select both the source and target folder. I'm using Excel VBA for this. The worksheets contain all the files names or part of it, to search for. It works like ...

I written simple java.util.Properties wrapping class. Unfortunatelly in my opinion it isn't testable at the moment and I don't have any great idea, how to improve it. I could use PowerMockito to change properties after loading or add setter for them or inject some class that provides properties, ...

I am solving UVa problem no 10300. But I am getting runtime error SIGKILL for the follwing code. /*Rough solution of uHunt 10300*/ #include <iostream> #include <vector> #include <numeric> using namespace std; int main(){ int n, f, farm_size, no_of_animals, efness, budget; int farm...

I have written code in the language Go. I wonder if anyone can do it in a very simple and effective way, because every language has its own way to solve this problem. My experience is in JavaScript. Please guide me how I can improve this solution. Thank you in advance. What I'm doing here: ...

I am using a Bash script to execute a Python script multiple times. In order to speed up the execution, I would like to execute these (independent) processes in parallel. The code below does so: #!/usr/bin/env bash script="path_to_python_script" N=16 # number of processors mkdir -p data/ for ...

For my game that I'm writing, I need, among other things, a data structure for storing best values. For this purpose, I tried to write a class that meets the most general needs, and yet does not seem overloaded. Can the class be further improved in terms of code quality or performance? Is the in...

I have a WordPress site with multiple custom post types, that all share a common custom taxonomy. Users can also be tagged with terms from this taxonomy. After giving up on JOINS, I managed to conjure the following query to get all of the posts and users based on a term_ID. global $wpdb; $sql =...

I have a list of file which I have gathered them in time order, I should change the file name (just name) in order of the time. The name changing process will contain; Removing the name from ‘#’ sign until the end. Save the name before ‘#’ and add the 1.1 for the first file and the numbering wil...

I am creating a Expense Tracking Application in C# and right now I am trying to build its building blocks in a console app. would like to know your feedback if it is in a Object Oriented Design/Structure namespace ExpenseTrackerOOP { class ExpenseTracker { static void Main(string...

I have just started learning about time complexities and am currently reading Logarithmic Complexity. Here's an example of a piece of code which is O(log(n)). def intToStr(i): '''Assumes i is a nonnegative int Returns the string representation of i''' digits = '0123456789' if i == 0...

I have a method in controller where i wrote queries in if else with a difference but how can i remove the parts of the query which is same for all than writing again nd again any better solution so solve this issue if (isset($slug_colum[1])) { $productsFeatured = Product::selec...

this is my first time on this stack exchange :) I created a little script to check for the latest version of specified API version available, but I am wondering if I am using the best way possible for checking regex and includes? The const arr will be filled dynamically with version folders usi...

I'm working on a django project and I'm wondering if there is any way to improve the process time to export my data to xls format. Actually, it takes between 43 seconds and 49 seconds to create the file and download it. I would like to know if my code could be improved in order to earn time. Th...

I'm still new in web development and I am trying to develop a website with free access to doctors listing with option of booking. This is a personal project that my local community can benefit. I want to get an opinion or recommendation from you experts whether the logic for my register function...

I've attempted to make a small PHP library for styling terminal output using ANSI escape sequences. The repo is located here To be honest, I am not really satisfied with the current structure of my code. It seems to be "not good". But I don't know any better ways to structure it. Please feel fr...

In my forms I have 4 radio buttons, to Add User/Add Group and to Remove User/Remove Group. The current code below works, I was just wondering if there was a better way to do it than have this gross very similar code. HTML forms: <div class="form-popup" id="addUser"> <form class="form-container"...

My goal is to generate a large sparse matrix with majority (~99%) zeros and ones. Ideally, I would be working with 10,000 rows and 10,000,000 columns. Additionally, each column is generated as a sequence of Bernoulli samples with a column-specific probability. So far, I've implemented 3 ways to g...

I'm making a program which fits a piecewise linear regression with up to 4-5 breakpoints in the data, and then deciding how many breakpoints is best to prevent over and underfitting. However, my code is extremely slow to run, due to how ungraceful and brute force it is. However, I'm not sure how ...

An Egyptian fraction was written as a sum of unit fractions, meaning the numerator is always 1; further, no two denominators can be the same. As easy way to create an Egyptian fraction is to repeatedly take the largest unit fraction that will fit, subtract to find what remains, and repeat until t...

I use this method to get either Customer or Account. The server will determine which type it is. The response will have a property "Type": "Customer" or "Type": "Account". I first deserialize to Client (supertype) to check the Type property. Then deserialize to either Customer or Account. publ...

I wrote a simple program to encode a local text file with password and decode it back. There is one text file and it is either enocoded with password or is in plain text. I had a version in python for this, but nim compiles to an executable, so I gave it a try. I'm not prefectly happy with c...

I need a menu with buttons of months previous and after a given month, something like this: | month | month | month | current month | month | month | month | Can this function further be improved? /** * Generates array of months previous and after given date * @param $p_base_data - arra...

So I am having a discussion with a friend of mine whats the best way to verify an account. We have come up with two methods: Method 1 The first method there are three steps: register user and automatically create an row inside verification table send email to user with verification code aft...

Here is a fairly straightforward solution Python to the Tower of Hanoi problem def move_rings(number_rings, move_from, move_to, spare_tower): """Print all steps move_to move N rings move_fromom move_tower A move_to move_tower C""" dict_rings = {0: "A", 1: "B", 2: "C"} if number_ring...