3
votes
0answers
35 views

Is it OK to have a property of type COM object

I am developing a COM addin for Microsoft Excel, using VB.Net. I wrote a class to represent a worksheet that contains certain elements. Let's say for example it has a ListObject. I create a property ...
3
votes
0answers
48 views

Finite-difference approximation of the 2nd derivative operator matrix for a staggered grid

I'm working on a computational physics assignment and I was looking for some help as I've got stuck! The question is: Write a function to create the finite-difference approximation of the 2nd ...
3
votes
0answers
86 views

Tips for optimizing javascript code. a year's worth of Dates

I am playing around with the date object, i made a function that generates a bunch of dates, and applies some function on each date. For a month's worth, it is fine about 2.5ms on my pc, ff and ...
3
votes
0answers
327 views

Writing a Compiler - .reloc section of the COFF

I'm looking for a little bit of direction in writing a compiler. I've written in Common Intermediate Language, C#, and various other .NET languages; I've written my own Metadata Parser and now I'm ...
3
votes
0answers
46 views

Relationship between a mixin and its master invokation

I haven't studied Smalltalk or Strongtalk and am just trying to get an overview of the semantics of interfaces and polymorphism in O/O languages, particularly Dart. In the 2002 paper titled Mixins in ...
3
votes
0answers
48 views

Strategies for investigating performance of an ASP.NET web application running under .NET 4

I'm trying to compare the performance of an application that has recently been converted from .NET2 to .NET4. From my perfomance tests it seems that although page response times are generally a bit ...
3
votes
0answers
128 views

Web framework architecture with non-blocking I/O

There's been a lot of news in the enterprise world lately, specially in the web, and I've decided to build a small web framework on top of Netty to learn more about asynchronous programming and ...
3
votes
0answers
58 views

Go - idioms/design for determining when an unknown number of goroutines are complete

I have a workflow wherein I walk recursively through a bunch of directories, then for each file perform some action. I'm using goroutines to walk each directory, and also to process each file. The ...
3
votes
0answers
43 views

Conditional CSS based on external modifier class - good practice?

Introduction / background: CSS components For a relatively large website we are working with SASS, and trying to manage CSS in components. The basic idea of components is that a component should look ...
3
votes
0answers
320 views

Fast fixed-size (256 bit) integer modulo/division

What is the fastest way to divide two 256-bit integers? They are represented as an array of 26-bit words, each stored in 32-bit integers. I have access to a 64-bit type if that's useful. It seems ...
3
votes
0answers
36 views

Update of user interface cycle

I am developing an App for iOS. In an attempt to avoid the pure MVC where everything is packed in the "Controller", I have added a Presenter layer and an Application Layer. In doing so I have come up ...
3
votes
0answers
85 views

Proper GIT repository usage that accommodates feature branches and parallel testing

After reading around I found that there were various git workflows being used but there aren't enough (or I just haven't found them yet) info on how to use git properly with having test builds. I was ...
3
votes
0answers
110 views

How to handle complex calculated fields in an ORM

In our API we've got a few central datatypes which need to be "decorated" (so to speak) after retrieval from the database with calculated values. The database is accessed through an ORM which follows ...
3
votes
0answers
110 views

Directly query database vs. Using web service

I'm a junior programmer, am working on a WPF application that will deploy to ~50 users. We basically are streamlining all of his charting/tracking of client data. Each user will probably make about ...
3
votes
0answers
362 views

The best way to convert Dynamic SQL to C#/Linq while joining multiple tables

I am trying to find the best way to convert the following dynamic SQL snippet to C# / Linq. The question is complicated by the use of multiple tables within the dynamic SQL. I've examined the ...
3
votes
0answers
66 views

Updating an entity via a service layer

What's the best way to update an entity using a service layer? Performing a single, atomic action I can understand like BlogService.Publish(blogID) but what about editing multiple values which map to ...
3
votes
0answers
283 views

What is the relationship between “flux” and pure functional reactive programming?

Flux, as far as I understood, is a technique about dealing with the dataflow of an application unidirectionally, keeping state isolated from the rest of the program in read-only, self-contained ...
3
votes
0answers
273 views

What algorithm is this?

I have some vague recollections from my algorithms courses, but nothing specific comes to mind. let S be a multiset of things we are interested in. As input, we get T, s1, s2, ... sn, all of which ...
3
votes
0answers
358 views

Visual Studio, Git, and common code

I'm looking for some advice on how I should arrange a large new project I'm working on to allow it be more easily managed in Git (using GitLab), and developed in Visual Studio. To give an idea of ...
3
votes
0answers
244 views

Oauth 2 store access token vs verifying on each call

Let's say my Server is both Authorization Server and Resource server My Client (for example mobile app) can authenticate in 2 matters: via Resource Owner Password Credentials Grant via ...
3
votes
0answers
240 views

Decoupling of Model and API (in an .net WEB API Project)

I currently have one separate project for my models, and one separate project for a API application that consumes this model. The intention of the separation is to avoid any outgoing dependencies from ...
3
votes
0answers
164 views

Walk Tree vs Zhang and Sasha Algorithms

I need some help understanding how two tree comparing algorithms differ. I am working with Microsoft's XmlDiffPatch (http://msdn.microsoft.com/en-us/library/aa302294.aspx) which compares two xmls. The ...
3
votes
0answers
81 views

Adding new service to authenticated website

So I've created an API that I want to leverage to add some functionality to an existing web app. My current website authenticates users using SAML. What I'm looking to do is instead of moving the code ...
3
votes
0answers
165 views

Design for an application framework that will allow each implementation to customize parts of the UI

I am tasked with designing an application framework that will allow each implementation to customize parts of the user interface. One such example would be that the implementation (let's call it ...
3
votes
0answers
119 views

Should I inject a data dependency into an Angular Directive?

I am currently implementing an AngularJS directive. It is fundamentally a reusable widget comprised of a select box and a table which populates based on the item in the select box. My point of ...
3
votes
0answers
306 views

How to avoid module dependency chain nightmare caused by transitive dependencies?

Many (most?) AngularJS folks seem to advocate for breaking AngularJS apps up into many modules. Brian Ford in his blog already states that packaging by layer (controller, service, etc.) is a "silly" ...
3
votes
0answers
94 views

Environment that enables variable constraint checking and creation

Currently I'm working on a system that enables users to add Tag's to available TagTypes on specific pages. For instance, we would have a TagType called "Installer" and the user wants his name ...
3
votes
0answers
229 views

When to use wide column stores instead of document based stores

I have some experience with document based stores (MongoDB and CouchDB) and I am interested in exploring wide column databases. Based on my initial exploration I can grasp a basic understanding of ...
3
votes
0answers
249 views

Splitting up a Rails/Ruby app onto multiple servers

We recently moved a large application to two machines, both running the same codebase. I. Machine A Web server for public facing application Receives web hook call backs from our ESP Handles a ...
3
votes
0answers
132 views

How to make sure media are used only on authorised sites?

I have a video library that I need to publish for my clients. The clients need to be able to embed a player to their sites and play the videos. I need to restrict access to my clients only so that no ...
3
votes
0answers
153 views

Menu building pattern

I'm having troubles getting my head around the active-state handling of a menu when the menu isn't used for routing. I come from Drupal where the menu system handles the routing as well. so setting ...
3
votes
0answers
134 views

What's the canonical way to store translations of user data?

I've developed some software that allows my users to attach a blurb to some non-language specific information: Pseudocode model: item(): ID creationdate byline //Only one byline for the object ...
3
votes
0answers
548 views

MVVM - Master Detail interaction scenarios - Implementing when MasterVm has partial data, and Detail has to pull whole entity

I primarily work with .Net WPF MVVM applications. I've used several frameworks, MVVM Light, Prism, etc, and I've been able to break the implementation of CRUD MVVM into three scenarios. Scenario 1: ...
3
votes
0answers
972 views

How to tell SignalR Notifications Hub that there is a new notification without having SignalR poll on that table

I'm developing a push-notifications system for my ASP.NET MVC app. The idea is to use Redis for queueing, ServiceStack for queue processing and SignalR for push-notifications to implement a system ...
3
votes
0answers
529 views

Explanation java/web (tomcat/coyote/JSP/Servlet etc..) in 'Perl-world' terms

Analyzed one web-server. for the http request i got: apache 2.2... what redirects to https, and for https got apache-coyote 1.1. and the server runs xwiki java app. Trying to understand how it is ...
3
votes
0answers
210 views

Strategies to find memory leak in AIR app with native extension

Background: I'm working on an Adobe AIR app that has many facets. I'm looking for strategies to find memory leaks. Broadly speaking, the EXE contains an embedded JVM, and an AIR Native Extension for ...
3
votes
0answers
219 views

Understanding velocity update in Binary Particle Swarm Optimization

I am wondering how to interpret the velocity update in a Binary Particle Swarm Optimization (PSO). To recap the velocity update : V(t+1) = V(t) + c1 * r1 * (XlocalBest - X(t)) + c2 * ...
3
votes
0answers
367 views

How to bypass Oauth2 authentication when the client and resource owner is the same entity?

We are currently working on using an API provided by Mercado Libre which is a maket place for selling various goods. Their APIs use OAuth 2.0 for authentication. The problem is that OAuth 2.0 as ...
3
votes
0answers
667 views

Who invented the otpauth:// URI scheme?

It seems really simple, but who invented the commonly-used otpauth:// scheme (used by Google Authenticator and other TOTP soft tokens by scanning QR codes)? When?
2
votes
0answers
59 views

Enumerating the primitive recursive functions

How can I enumerate (by expression tree size, for example) all of the primitive recursive functions that map natural numbers to natural numbers in a traditional programming language like C? For ...
2
votes
0answers
34 views

Polygon simplification that encloses original set of points

I have been trying to implement an optimization for 2D sprite rendering to fight the problem of limited fillrate on mobile devices. The idea is to render textured polygons instead of quads that will ...
2
votes
0answers
44 views

mining (& searching in) github projects

Is there any way to find every github project which: is GPL licensed has over one million lines of C++ code I am imagining that the Github API was designed to automate such requests, but I am not ...
2
votes
0answers
79 views

Finite state machine menu design

I'm creating a FSM in python (it's a step sequencer and sample pad based on a Raspberry Pi 2). Right now there are two states and the third is the Menu. This is handled by a class System which ...
2
votes
0answers
47 views

Log with Application Insights only (NLog vs AI) in Asp MVC

I was going through several blog posts and stackoverflow and programmers and I am still a bit confused. You can install NLog (or some other logging lib) and start logging quite fast and then you can ...
2
votes
0answers
58 views

Building a generalized notification system: passive vs. active

Recently, I've tried my hand at building a notification system, but I quickly found that notifications are tricky things, especially in the context of building a general model. The diversity of what ...
2
votes
0answers
99 views

Architecture for Web application to monitor remote servers

So I'm a relatively new programmer, attempting to create a web application (ASP.net) to display the system information (E.G. Status of windows services, disk & resource usage and errors in event ...
2
votes
0answers
57 views

How to find related articles among a set of articles?

I'm utilising OpenCalais API to tag the articles from multiple news sources. I know which category each article belongs to (e.g. crime, politics etc). Also each article has three social tags ...
2
votes
0answers
95 views

Documentation of code review

In a project we have a rather formal code review, which is currently done manually and documented in Excel sheets and Word docs. We would like to improve the current code review process by ...
2
votes
0answers
49 views

Camel/EIP/ESB with messaging from a website to process an order; synchronous and asynchronous

I am investigating Camel for connecting various services. I understand the core concepts but I was curious about more specific implementation details. This application would have a browser client ...
2
votes
0answers
31 views

Should my application call statsd directly or should I call statsd based off logs?

I'm planning on incrementing counters in statsd based of various events within my application. I have logging in place for these events. So, from my viewpoint I have two options: Update the ...

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