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• How do you manage the testing of your Android software on physical devices?

  - by Philip Regan

  I'm in charge of managing mobile application development at my company, and I am currently building a mobile device "library" for testing. Essentially, we want to have a representative device in-house for each of the OSes we are developing for, currently iOS (iPhone-only), Blackberry, and Android. Simulators only go so far, but I'm placing into the process a step to test software on the devices themselves. The problem we're finding is with Android. I don't think any of us here ever really understood just how fragmented the whole platform is until we started looking at devices to acquire. We are going to wait until v2.3 of Android is released, but which products to choose? Do we go by the most popular by market share? Do we get a small range of products by specs from least to most powerful overall? We're trying to avoid having to manage a dozen different devices to test each app, if not because of cost if only for the repeated time sink. How do you manage the testing of your Android software on physical devices?

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• is it possible to use shopify for just their shopping cart component or should I just roll my own

  - by timpone

  I'm working on an e-commerce site and am a rails developer; due to the nature of the items, I am managing them in their own database so I'm really looking for something that is only for the shopping cart aspect (there are things like heavy nesting and integration with other pieces of the app that would be very difficult to reproduce). It seems like there are two ways that I can go. (1) One way is rolling my own shopping cart and using something like Stripe (which I have been evaluating and am working fine with it). This literally could be as easy as creating an orders table and a line items table and a lot of front-end. (2) Or I could try to integrate into a third-party shopping cart like Shopify. I am not really sure if I can just use the shopify shopping cart or whether there is any advantage to this. If I already have most of my app done, would shopify (or another shopping cart app) provide any significant benefit (it clearly could)? Or would the integration be too much of a headache? Like for example, when a user 'adds to order' on my site, can I post to shopify and associate it with that user? thx

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• ASP.NET MVC WebService - Security for Industrial Android Clients

  - by Chris Nevill

  I'm trying to design a system that will allow a bunch of Android devices to securely log into an ASP.NET MVC REST Web service. At present neither side are implemented. However there is an ASP.NET MVC website which the web service will site along side. This is currently using forms authentication. The idea will be that the Android devices will download data from the web service and then be able to work offline storing data in their own local databases, where users will be able to make updates to that data, and then syncing updates back to the main server where possible. The web service will be using HTTPS to prevent calls being intercepted and reduce the risk of calls being intercepted. The system is an industrial system and will not be in used by the general Android population. Instead only authorized Android devices will be authorized by the Web Service to make calls. As such I was thinking of using the Android devices serial number as a username and then a generated long password which the device will be able to pick up - once the device has been authorized server side. The device will also have user logins - but these will not be to log into the web service - just the device itself - since the device and user must be able to work offline. So usernames and passwords will be downloaded and stored on the devices themselves. My question is... what form of security is best setup on the web service? Should it use forms Authentication? Should the username and password just be passed in with each GET/POST call or should it start a session as I have with the website? The Android side causes more confusion. There seems to be a number of options here Spring-Android, Volley, Retrofit, LoopJ, Robo Spice which seems to use the aforementioned Spring, Retrofit or Google HttpClient. I'm struggling to find a simple example which authenticates with a forms based authentication system. Is this because I'm going about this wrong? Is there another option that would better suite this?

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• Find vertices of a convex hull

  - by Jeff Bullard

  I am attempting to do this within CGAL. From a 3D point cloud, find the convex hull, then loop over the finite facets of the convex hull and print each facet's vertices. It seems like there should be a straightforward way to do this; I would have expected that 3D polyhedra would own a vector of facet objects, each of which in turn would own a vector of its edges, each of which in turn would own a vector of its vertices, and that their would be some access through this hierarchy using iterators. But so far I have been unable to find a simple way to navigate through this hierarchy (if it exists).

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• Java - learning / migrating fast

  - by Yippie-Kai-Yay

  Hello! This is not one of those questions like "How do I learn Java extremely fast, I know nothing about programming, but I heard Java is cool, yo". I have an interview for a Java Software Developer in a couple of weeks and the thing is that I think that I know C++ really good and I am somewhat good at C# (like, here I can probably answer on a lot of questions related to these languages), but I have almost zero experience with Java. I have a lot of projects written in both languages, I participiated in several open-source projects (mostly C++, though). Now, what should I do (in your opinion) to prepare myself for this Java interview. I guess migrating from C# to Java should be kind of fast, especially when you know a lot about programming in global, patterns, modern techniques and have a lot of practical experience behind you. But still two weeks is obviously not enough to get Java in-depth - so what should I focus on to have the best chances to pass the interview? Thank you.

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• What kind of screen has the best image quality for reading/programming?

  - by EpsilonVector

  I'm thinking about buying a new laptop, and while I bought my original one oblivious to the fact that there could be different quality screens out there, after seeing the screen on my sister's netbook I realized that I might have to be cautious with my next purchase. Granted, I did not confirm that the reason my sister's screen looks the way it does is due to the screen itself and not color scheme/graphics card, but I know very little about the different screen technologies and how they differ in image quality and therefore can't really tell if wondering about it even makes sense or not. So what I'm asking is: should I be worried about screen quality? And if so, what technologies should I be looking for? How do they differ and which are the best ones? What are the different elements that determine the quality of a screen and which stats should I go for in each element? For the record, I'm not interested in opinions about screen size, but picture quality for lots of reading/coding.

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• Charles Barkley syndrome

  - by dacracot

  Charles Barkley was an excellent basketball player, a hall of fame, and a dream team member. He played for the 76ers, Suns, and Rockets. Yet he never won an NBA championship. Some might argue this was because he was never surrounded by other players of his caliber, and in the NBA, you can't win on your own. So what does this have to do with programming? How many of you out there feel like Sir Charles? Leading your team in every category, KLOCs, bugs fixed, systems configured... Always the one pushing for improvements, upgrading systems, negotiating with customers... Feeling like you are carrying the team. Anger just under the surface. Only to retire eventually, without "the ring"1. 1: Keep in mind, Charles never blamed his team. He just performed at his best.

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• Are there well-known PowerShell coding conventions?

  - by Tahir Hassan

  Are there any well-defined conventions when programming in PowerShell? For example, in scripts which are to be maintained long-term, do we need to: Use the real cmdlet name or alias? Specify the cmdlet parameter name in full or only partially (dir -Recurse versus dir -r) When specifying string arguments for cmdlets do you enclose them in quotes (New-Object 'System.Int32' versus New-Object System.Int32 When writing functions and filters do you specify the types of parameters? Do you write cmdlets in the (official) correct case? For keywords like BEGIN...PROCESS...END do you write them in uppercase only? It seems that MSDN lack coding conventions document for PowerShell, while such document exist for example for C#.

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• TDD vs. Productivity

  - by Nairou

  In my current project (a game, in C++), I decided that I would use Test Driven Development 100% during development. In terms of code quality, this has been great. My code has never been so well designed or so bug-free. I don't cringe when viewing code I wrote a year ago at the start of the project, and I have gained a much better sense for how to structure things, not only to be more easily testable, but to be simpler to implement and use. However... it has been a year since I started the project. Granted, I can only work on it in my spare time, but TDD is still slowing me down considerably compared to what I'm used to. I read that the slower development speed gets better over time, and I definitely do think up tests a lot more easily than I used to, but I've been at it for a year now and I'm still working at a snail's pace. Each time I think about the next step that needs work, I have to stop every time and think about how I would write a test for it, to allow me to write the actual code. I'll sometimes get stuck for hours, knowing exactly what code I want to write, but not knowing how to break it down finely enough to fully cover it with tests. Other times, I'll quickly think up a dozen tests, and spend an hour writing tests to cover a tiny piece of real code that would have otherwise taken a few minutes to write. Or, after finishing the 50th test to cover a particular entity in the game and all aspects of it's creation and usage, I look at my to-do list and see the next entity to be coded, and cringe in horror at the thought of writing another 50 similar tests to get it implemented. It's gotten to the point that, looking over the progress of the last year, I'm considering abandoning TDD for the sake of "getting the damn project finished". However, giving up the code quality that came with it is not something I'm looking forward to. I'm afraid that if I stop writing tests, then I'll slip out of the habit of making the code so modular and testable. Am I perhaps doing something wrong to still be so slow at this? Are there alternatives that speed up productivity without completely losing the benefits? TAD? Less test coverage? How do other people survive TDD without killing all productivity and motivation?

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• CodeGolf : Find the Unique Paths

  - by st0le

  Here's a pretty simple idea, in this pastebin I've posted some pair of numbers. These represent Nodes of a unidirected connected graph. The input to stdin will be of the form, (they'll be numbers, i'll be using an example here) c d q r a b d e p q so x y means x is connected to y (not viceversa) There are 2 paths in that example. a->b->c->d->e and p->q->r. You need to print all the unique paths from that graph The output should be of the format a->b->c->d->e p->q->r Notes You can assume the numbers are chosen such that one path doesn't intersect the other (one node belongs to one path) The pairs are in random order. They are more than 1 paths, they can be of different lengths. All numbers are less than 1000. If you need more details, please leave a comment. I'll amend as required. Shameless-Plug For those who enjoy Codegolf, please Commit at Area51 for its very own site:) (for those who don't enjoy it, please support it as well, so we'll stay out of your way...)

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• Application shortcut reappears on restart

  - by Nathan Friesen

  I have an application that I have built a .msi installer for throgh Microsoft Visual Studio 2010. I recently made some updates, including changing the version number and rebuilt the installer with these updates. The installer includes shortcuts on both the desktop and in the Start menu. Running the installer appears to work fine, and both of these shortcuts work. After restarting my computer I've found that the shortcuts are changed to have a Target type of Application (Installs on first use) and the Start In: field is changed to a location that doesn't exist. Once this happens, every time you use that shortcut it tries to install the application again and fails. I have also changed the name of the shortcut that the installer creates. This appears to work, and the shortcut still works after a restart. After the restart, though, the shortcut with the old name that doesn't work also appears on the desktop and in the Start menu. Does anyone have any ideas what I may have set up wrong, or what I need to change to get the shortcuts to be have properly?

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• How do I speed up XML parsing operation?

  - by absentx

  I currently have a php script set up to do some xml parsing. Sometimes the script is set as an on page include and other times it is accessed via an ajax call. The problem is the load time for this particular page is very long. I started to think that the php I had written to find what I need in the XML was written poorly and my script is very resource intense. After much research and testing the problem is indeed not my scripting (well perhaps you could consider it a problem with my scripting), but it looks like it takes a long time to load the particular xml sources. My code is like such: $source_recent = 'my xml feed'; $source_additional = 'the other feed I need'; $xmlstr_recent = file_get_contents($source_recent); $feed_recent = new SimpleXMLElement($xmlstr_recent); $xmlstr_additional = file_get_contents($source_additional); $feed_additional = new SimpleXMLElement($xmlstr_additional); In all my testing, the above code is what takes the time, not the additional processing I do below. Is there anyway around this or am I at the mercy of the load time of the xml URL's? One crazy thought I had to get around it is to load the xml contents into a db every so often, then just query the db for what I need. Thoughts? Ideas?

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• Should CSS be listed on your resume under Languages?

  - by Sandeepan Nath

  I have some doubts like Whether CSS should be put under Languages or not? Although Wikipedia says Cascading Style Sheets (CSS) is a style sheet language ... But do they write CSS under the languages section of the resume, along with PHP, etc? Similarly what about HTML? I have some doubt and I don't want to sound like someone who is not aware of the trends. Just to give an example, currently I have the following languages,frameworks, technologies, etc. listed under the "Technical Expertise" section of my resume - Technical Expertise * Languages - Proficient - PHP 5, Javascript, HTML ?*,CSS ?*,Sass ?*. Beginner - Linux Bash. * Databases - MySQL 5. * Technologies - AJAX. * Frameworks/Libraries - Symfony, jQuery. * CMSes - Wordpress. Although my domain is Web-development/design, I welcome domain-agnostic answers which can provide some generic ideas/reasoning. I have seen, a lot of people messing up these sections (even more serious than my doubts :) ), putting things under wrong sub-headings and thus putting a big question mark on their understanding of those things. I don't know much about XML, Comet Technology etc. Considering those are included too, What things should be put under Languages? E.g. Should CSS be put under Languages? Please give some reasoning to support your views. Where should the others (XML, Comet, cURL etc. ) be put? I welcome some examples of how you put it. Or do you have an additional Keywords section where you write all the unsortables ? Considering a set of standards like W3C standards, etc. do you have a standards sub-heading? I guess I have put the contents of other sections Okay. But do let me know about your ideas and reasoning. After all, I understand there may not be a single answer to this, but let's see what is the trend. Thanks Updates Further, do you mention design patters you have used? Web Services etc.? Where do you mention SOAP, XML etc...

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• Does FFMpeg support gpu acceleration of media encoding/decoding?

  - by Jason123

  I was wondering if ffmpeg supported gpu acceleration. I was reading on their websites and came across contradicting information. http://www.ffmpeg.org/general.html#Video-Codecs -H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration) http://ffmpeg.org/trac/ffmpeg/wiki/x264EncodingGuide -Will a graphics card make x264 encode faster? No. libx264 doesn't use them (at least not yet). There are some proprietary encoders that utilize the GPU, but that does not mean they are well optimized, though encoding time may be faster; and they might be worse than x264 anyway, and possibly slower. Regardless, FFmpeg today doesn't support any means of gpu encoding, outside of libx264. If not, is there any way to add gpu acceleration to h.264 encoding/decoding?

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• What to do when projects are slow and you are being held up by others?

  - by antonpug

  Where I work, projects take a significant amount of time because the teams are large, there is a lot of "design and analysis", a lot of documentation, and work always gets pushed off. I work in the middle tier and I always have to wait for the services and client folks to get their work done. Oftentimes there are weeks at a time when I can't get any work done. I feel bored and weird just sitting here scrambling to at least appear like I am busy. Management seems to do little when asked for more work. What do you do in such cases?

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• What should my "code sample" look like?

  - by thesunneversets

  I've just had quite a good phone interview (for a CakePHP-related position, not that it's especially important to the question). The interviewer seemed to be impressed with my resume and personality. At the end, though, he asked me to email him a code sample from my existing work project, "to check you're not secretly a terrible programmer, ha ha!" I'm not too worried that my code can't stand on its own two feet, but I'm very much an intermediate programmer rather than an expert. What obvious pitfalls should I make sure my code sample doesn't fall into, in case they rule me out on the spot? Secondly, and this is probably the harder part of the question to answer, what features in a code sample would be so impressive that they would instantly make you much more favourably inclined towards the programmer? All ideas or suggestions welcomed!

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• How to build Gantt chart from a set of Redmine tickets without filling dates in all of them?

  - by Alexander Gladysh

  Redmine 1.1.1 I've created a set of tickets for a new project. In each issue I filled Subject, Description and Estimated time fields. I also filled blocks/blocked by dependencies in Related issues. But the Gantt chart for this project is empty (that is, it contains all the tasks, but does not contain any "bars" for them). I need to get a Gantt chart (or any other visual representation) to show to other project members. I'd hate to type all that information again into OpenProj. Is there a way to get a serviceable Gantt chart from the Redmine? Update: In the answers below I read that to get working Gantt chart I have to input start date and due date manually for each issue. I believe that this information should be inferred automatically from start date of first ticket (first — depenency-wise), estimated time of each ticket, dependency graph, resource assignment and working hours calendar. Just as it happens in any minimally sane Gantt chart project management tool. To enter this information by hand and to keep it up-to-date manually as the project evolves is insane waste of time. Is there a way to generate Gantt chart from the set of Redmine tickets without filling in all this information manually? (Solutions involving data export + import in sane tool or involving existing plugins are perfectly acceptable.)

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• Iphone/Android app – chatroom development – what framework & hosting needs?

  - by MikaelW

  I have some experience regarding IPhone and Android development but I am now struggling to solve a new class of problem: apps that involve a client/server chatroom feature. That is, an app when people can exchange text over the internet, and without having the app to constantly “pull” content from the server. So that problem can’t be solved with a normal php/mysql website, there must be some kind of application running on a server that is able to send message from the server to the phone, rather than having the phone to check for new messages every 10 seconds… So I’m looking for ways to solve the different problems here: What framework should I use on the two sides (phone / server)? It should be some kind of library that doesn’t prevent me to write paid apps. It should also be possible to have the same server for the Iphone and android version of the app. What server / hosting solution do I need with what sort of features, I just have no experience regarding server application that can handle and initiate multiple connections and are hosted on hardware that is always online I tried to find resources online but couldn’t so far, either the libraries had the wrong kind of license/language or I just didn’t understand… Sometimes there were nice tutorial but for different needs such as peer2peer chat over local network… Same with the server and the hosting problem, not sure where to start really, I’m calling for help and I promise I will complete this page with notes about the experience I will get :-) Obviously the ideal would be to find a tutorial I missed that include client code, server code and a free scalable server… That being said, If I see something as good, it probably means that I have eaten the wrong kind of mushroom again… So, failing that, any pointer which might help me toward that quest, would be greatly appreciated. Thanks in advance. Mikael

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• Two internships at the same time -- good or bad?

  - by Karl

  I had no internship a few months ago, so I basically went on a 'resume mailing' spree and emailed a lot of companies that I was interested in working for and that had my line of work. This didn't prove futile until a company accepted me into their internship program but said that I would be working remotely. I had no problem with that, the project was good and I was interested. Now I have another internship at a company that is close to my home and I don't want to miss it at all! I can manage both internships side-by-side. In the day, I will do the internship that is closer to my home and at night (and other times), I can manage the remote internship. My question is -- should I both? I am particularly interested in how two internships at the same time are viewed. Would it look good or bad? PS: Neither is paying me anything, so money is not a factor.

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• Integration of advertisement into WP7 apps: Any experiences?

  - by OneWorld

  Has anyone of you guys integrated or is thinking about integrating either admob, MS pubCenter, adwhirl or any other advertising provider into your apps? Please share your experience... Who pays best? Any regulations? Any problems with getting the app approved by Microsoft Market? If you chose Admob: Which plugin do you suggest? This or that or another one? Any experiences in Europe or Germany? (MS pubCenter is US only so far) Edit: I think we discussed enough about acceptance of mobile advertisement. Let's focus now on the questions I asked. Edit 2: Hmm, maybe Stackoverlfow is a better place to discuss question 2-5. Could somebody migrate this one?

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• PHP questions and answers

  - by Daniel James Clarke

  Hi guys I'm a web designer and front end developer, however our only back end developer has quit and left the company. The head of development(who is a desktop developer) has asked me to find a set of Questions and Answers that are of OOP level for a LAMP developer so we can see if new candidates for the job are up to scratch. As a designer I'm out of my depth and he's unfamiliar with LAMP development. Dan

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• Should all new web projects build their backend based on xml/json result sets?

  - by Blankman

  If you were building a new Saas project, would it make sense to start with all of the backend services returning xml/json? Because these days you need to build for both the web and mobile devices, and having a backend that is build from the start to return xml and json, you are ready to go mobile (all services have the business logic, so you won't be repeating anything). Now the web would be MVC, so the controller would just be routing the request to your service backend, and converting the json or xml to html. The obviousl downside is that you have to build a backend, and then another web project that calls your backend. But this also goes to you favor as it forces you to seperate your concerns, and not leak business logic in your controller/view layer. Thoughts?

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• How to learn programming for a medium scale project form a beginner? [closed]

  - by Lin Xiangyu

  I study programming by myself.I have learn servel programming languages. but I never write a project more than 1000 lines. I know the best way to improve programming skills is practise. The problem is many books, just talk about the programming language, or talk about build a project from a high level. Fews of books will teach how to build a middle scale project. For example, I want to build a simple HTTP Server(Nor like Apache or just a simple listenr to a port), a Markdown Parser, or a download tools just like emule or wget. I don't know what to do. I may found peaces of code in the web, or found familiar project in the Github. I don't know how to read the code. I want to some tutorial that can told me how to build the project step by step, teacher me how to write thousands lines of code. Any suggest?

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• Computer vision algorithms (how is this possible?)

  - by Maxim Gershkovich

  I recently stumbled across a company that has created what appears to be a computer vision technology that is capable of detecting shoplifting automatically and alert its users. LINK Watching some of the videos and examples provided by the company has left me completely baffled and amazed as to how on earth they may have achieved this functionality. I understand that no-one here will be able to tell me exactly how this may have been achieved but is anyone aware - and could point me to - research in this field or alternatively perhaps provide details as to how something like this could be implemented or guidance of where one might start? My understanding was the computer vision algorithms were many years away from being this sophisticated. Is this sort of application really possible? Anyone willing to hazard a guess at how they achieved this?

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• Worst coding standard you've ever had to follow?

  - by finnw

  Have you ever had to work to coding standards that: Greatly decreased your productivity? Were originally included for good reasons but were kept long after the original concern became irrelevant? Were in a list so long that it was impossible to remember them all? Made you think the author was just trying to leave their mark rather than encouraging good coding practice? You had no idea why they were included? If so, what is your least favourite rule and why? Some examples here

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