Top new questions this week:

Project Euler #7 10001st prime

I decided to start working on the Euler project exercises. I'm doing fine for now but the seventh problem is running quite slow and I can't think of anything to make it work faster. It takes around ...

c# performance beginner programming-challenge primes

asked by denis 20 votes answered by nhgrif 66 votes

Top 10 editors partitioned by year

I wanted to get some stats on who has done the most edits on Code Review, so I wrote the following query on SE Data Explorer. All improvement suggestions are welcome. Note that I used a cursor to ...

sql stackexchange t-sql

asked by Phrancis 8 votes answered by dnoeth 4 votes

Error-testing be with cucumber/capybaraweb

I'm working on writing tests for a rails application using cucumber and capybara. I have a scenario for a user editing a post, and making it invalid. The scenario looks like this: Scenario: I edit ...

unit-testing ruby-on-rails comparative-review webdriver cucumber

asked by user2367593 8 votes answered by sled 5 votes

Bucket sort in Haskell

As a first step in learning Haskell I am solving this problem, which involves finding the Rith-ranked numbers, given some input list and many Ri. In an imperative language I would make a zeroed array ...

performance haskell sorting

asked by stewbasic 7 votes answered by Gurkenglas 0 votes

Checking for surrounding mines

Am trying to create a minesweeper game, I have the following code which has to many nested ifs, I want to change the code to take out the nested ifs and make it better to read. But I am stuck on how ...

java minesweeper

asked by Novice 7 votes answered by mafagafogigante 1 vote

Pong-like game in C++ and Allegro5

I've been working on this pong game for the last 10 days, and I'd like to know of your opinions about it, what could I change to make my code better? #include <stdio.h> #include ...

c++ game

asked by Luna 7 votes answered by Edward 11 votes

Eraser tool for GIF editor

I am making a GIF editor in C#, and I am currently working on the eraser tool. I am not sure what I can do to make it more efficient, because when I make the thickness (diameter) more than 30 (pixels) ...

c# performance image wpf

asked by Jason Heddle 6 votes answered by almaz 1 vote

Greatest hits from previous weeks:

Queue Implementation using a Linked List

For understanding the concepts, I've implemented the Queue data structures using a linked list. Is there anything to improve? LinkList.java public class LinkList { private static class ...

java beginner data-structures linked-list queue

asked by Arun Prakash 7 votes answered by Pimgd 14 votes

Generate random numbers without repetitions

I want to generate a list of N different random numbers: public static List<int> GetRandomNumbers(int count) { List<int> randomNumbers = new List<int>(); for (int i=0; ...

c# random

asked by Kao 56 votes answered by rolfl 58 votes

Can you answer these?

Set the direction a Sprite faces based on its velocity

I'm learning Phaser, and decided to make a Mario-type clone. I'm writing a function that ensures the sign of the Sprites horizontal scale matches the sign of it's velocity. For a Sprite that's ...

javascript game typescript

asked by Carcigenicate 1 vote

Union-find implementation

Here are a few questions on my mind: What improvements to the above code can you think of? I want to say new UnionFind(x) where x is a Set[T] (I emphatically don't want to say new ...

algorithm data-structures scala

asked by Jonas Kölker 2 votes

UDP server for a multiplayer game using socketserver

I am making a multiplayer platforming game, and currently there are server performance issues once I have about 7+ clients connected. I was told earlier last week that I should investigate ...

python performance server udp

asked by Dysprosium Dysprosium 2 votes