This code is doing custom serialization of a List. It works fine when the list is the root object. Unfortunately JSON.NET throws an Exception if the List is a property. Here are the highlights. 1) We are using a custom JsonConverter class. 2) We are doing this to handle large lists so that we...

(I've been working on a DLL for GameMaker which would explain the odd data types I use.) The DLL I am working on let's me create 3D byte-arrays. However, I've run across an issue with my variables in my DLL. I've done a very, very, very extensive run down and I've isolated the issue to the code b...

An implementation of the singleton pattern in PHP using a trait (added in 5.4). Is there anything missing, any ways to create a second copy of the class? trait Singleton { static function instance() { static $instance; if ( is_null( $instance ) ) { $instance = new...

Given a list of objects, return an iterator for such a list. Looking for code-review, optimizations and best practices. Verifying complexity to be O(n) where n is sum of all objects, including elements of collections if contained. previously solved here. public class FlattenIterator implements I...

I'm working on wrapping the last.fm web API. I'm trying to use Interfaces to be able to easily make calls via functions which return an interface (as opposed to an object which would need to be free'd). I believe I have the fundamentals down, but I'm afraid I may be doing something wrong, and nee...

It's known that if you naively sum up a collection of arbitrary doubles, the end result may differ, sometimes significantly, from the actual sum. This is due to the loss of precision involved in representing real numbers in 64 bits. In some cases the rounding is catastrophic -- particularly if yo...

I started to refactor my app to MVC today. I wasted a lot of time because of simple mistakes. One was I kept trying to access the getter method inside of my custom getter method, which just causes and endless loop of gets. Even when I figured it out, I repeated this mistake several times. I thi...

This is a Graphical Timer control I made for C# Winforms, which taught me quite a bit (it is my first Custom Control). The code below is a fully working application with the Graphical Timer, some buttons to control it, and a listbox showing the sweeping angle of the pie (for debugging purposes). ...

Okay - so basically I have a login form that has a couple of 'states' it needs to display (connecting, input credentials, authenticating, invalid credentials, etc...etc...) - in the past I've literally tossed my views into my DI container and bound a ContentControl to a property on my ViewModel t...

I'm trying to better understand performance in PHP, one issue I'm thinking about is the n+1 problem. By n+1 I mean something like this: $posts = Posts::getPosts(); foreach($posts as $post) { $comments = Comments::getComments(array('post_id' => $post->id)); // do something with comments.. } ...

for the hiring process a company gave me this test : Q) Consider Share prices for a N number of companies given for each month since year 1990 in a CSV file. Format of the file is as below with first line as header. Year,Month,Company A, Company B,Company C, .............Company N 1990, Jan, 10...

Inspired by another question, I decided to implement Kahan summation in C++ (though that question implemented a different summation algorithm). Since I was writing C++, I decided to make the code generic. Although it's a little difficult to imagine anybody bothering to use Kahan summation on sin...