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  • How to teach your users/customers to send better error descriptions

    - by ckeller
    I often have to deal with customers or users which are reporting errors in applications. Most of the time their content is something useless as ERROR!!! x does not work without much more information. For resolving the issue I have to request every single detail of them, which often is more time consuming than fixing the issue itself. Other send information in formats which are not ideal, like screenshots (of data records, not of errors) although they could send a link (we have access to the systems) and so on. How do you tell your users/customers to describe the problems with more details so that the whole process could be easier for both sides? edit This question is more about the social skills, than how to achieve programmatic collection of logs and error information. I'm aware of the fact that this should be part of good software design.

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  • SQL Why is prefixing column names considered bad practice?

    - by P.Brian.Mackey
    According to a popular SO post is it considered a bad practice to prefix table names. At my company every column is prefixed by a table name. This is difficult for me to read. I'm not sure the reason, but this naming is actually the company standard. I can't stand the naming convention, but I have no documentation to back up my reasoning. All I know is that reading AdventureWorks is much simpler. In this our company DB you will see a table, Person and it might have column name: Person_First_Name or maybe even Person_Person_First_Name (don't ask me why you see person 2x) Why is it considered a bad practice to pre-fix column names? Are underscores considered evil in SQL as well? Note: I own Pro SQL Server 2008 - Relation Database design and implementation. References to that book are welcome.

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  • Could it be more efficient for systems in general to do away with Stacks and just use Heap for memory management?

    - by Dark Templar
    It seems to me that everything that can be done with a stack can be done with the heap, but not everything that can be done with the heap can be done with the stack. Is that correct? Then for simplicity's sake, and even if we do lose a little amount of performance with certain workloads, couldn't it be better to just go with one standard (ie, the heap)? Think of the trade-off between modularity and performance. I know that isn't the best way to describe this scenario, but in general it seems that simplicity of understanding and design could be a better option even if there is a potential for better performance.

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  • Technical Article: Experimenting with Java Timers

    - by Tori Wieldt
    OTN's new tech article is "Experimenting with Java Timers" by T. Lamine Ba. This article studies time—how Java handles timers and the scheduling of tasks. Java timers are utilities that let you execute threads or tasks at a predetermined future time, and these tasks can be repeated according to a set frequency. The article starts with a simple "Hello World" program in a web application that's composed of JavaServer Pages (JSP) and uses the model-control-view (MVC) design pattern. The IDE used in this article is NetBeans IDE 7.1, but you can use any IDE that supports Java. "Experimenting with Java Timers" demonstrates how to get started scheduling jobs with Java. To learn about Swing timers, check out the Java tutorial "How to Use Swing Timers" and additional information in the Java Platform, Standard Edition 7 API Specification for Class Timer. 

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  • How to redesign the UI of a large project?

    - by jem88
    I'm currently working at a quite big Android project (a social network, you can see it here if is useful to answer the question). We decided to restyle the whole app, changing all the UI design. The code I actually have is complex, there are many controllers, and it's a little messy too. Is it "better" in terms of time and code cleanliness to take one controller per time, and rewrite it entirely, or to modify one controller per time? The layout change entirely anyway, so for that I know I've to restart from scratch. Maybe it could seem a stupid question, but with the "time" variable I really can't see the best way.

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  • Particle system lifetimes in OpenGL ES 2

    - by user16547
    I don't know how to work with my particle's lifetimes. My design is simple: each particle has a position, a speed and a lifetime. At each frame, each particle should update its position like this: position.y = position.y + INCREMENT * speed.y However, I'm having difficulties in choosing my INCREMENT. If I set it to some sort of FRAME_COUNT, it looks fine until FRAME_COUNT has to be set back to 0. The effect will be that all particles start over at the same time, which I don't want to happen. I want my particles sort of live "independent" of each other. That's the reason I need a lifetime, but I don't know how to make use of it. I added a lifetime for each particle in the particle buffer, but I also need an individual increment that's updated on each frame, so that when PARTICLE_INCREMENT = PARTICLE_LIFETIME, each increment goes back to 0. How can I achieve something like that?

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  • Fresh start outside Google's crapbox [on hold]

    - by Krzysztof Minister Bytu
    I might have been experimenting with my website too much and Google first cut the flow of visitors considerably and now I didn't get one for 4 days already. It's a joke that they've done this, because I've put a lot of work into it, but that's a topic for another day. My question is about further avoiding it. I want to take the partly improved design from that website onto a new one and get a new domain name. The question is: in that case, do I have to change the hosting option (it has my old website name in the address), or is changing the domain enough for Google to treat it as something new from a "fresh user". In other words, does Google get through the domain address and log into the actual hosting address? I'd hate to waste another few months of hard work, so I prefer to take every possible precaution but not paying for another hosting would make things easier on the wallet.

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  • When should I decide what language and platforms I will use for a project?

    - by Mikalichov
    During your development process, when is the recommended phase to decide what platform to aim for, and what language to use? I figured that it would be better to choose at the beginning what would be your target platform, as it would affect your design decisions, and limit the language you are supposed to use. However, I have heard several stories of people developing their game with whatever language they were the most confident with, and then porting it to the various platforms. So, what is the best moment to choose? Before, during, after? If there is not one best choice, what factors should affect the decision?

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  • Making a level editor for my game

    - by Sherif Maher Eaid
    I am doing a 2D sprite based game in XNA for WP7, The game logic is simple, you start at some point, you want to avoid obstacles and reach a certain goal. obviously I need to make many levels for the game to be challenging and funny. I am considering making a level editor for my game where I can be able to design the level using some kind of GUI then it translates that to a .lvl or something that the game can read and interpret that to a playable level. I am asking for an already made level editor for XNA/WP7.

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  • Where does Rails get it's datetime for creating records?

    - by gwapEs9
    I have a rails app with a data model called 'jobs' and i'm faced with a critical design choice crossroads. I don't know enough about Rails and it's inner workings to be able to say for sure what I should do despite a complete read of the rails and ruby docs. I want to be able to accurately display the age of a job record in days. So when a customer logs in, they can see that the job they submitted is 'x' days old. Where does a rails app on Heroku get it's time stamps? From Heroku? or the customers system clock? If a customer has a out of date system clock and submits a job, it could really mess up the sorting of their job list, not to mention me the overseer of job records. Any advice out there? EDIT: Just to be clear, i'm not asking how to list jobs by their date, but to which clock does a rails app on Heroku base it's records.

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  • SNEAK PEEK: Another Silverlight theme pack preview

    Building on the positive feedback of the previous Silverlight application themes released last month (Cosmopolitan, Accent Color, and Windows) the design team is working on another theme targeting business application developers. We dont yet have an official name for this one yet (and to mitigate the confusion of internal code names again, Ill spare you the code name), but I wanted to put up a preview. Were turning this theme around FAST and I wanted to throw it out here in an initial iteration for...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Poll: What Are Your Favorite Silverlight TV Episodes?

    Its been 3 months since Silverlight TV first aired in mid January. Weve aired a variety of topics (from design centric to hardcore developer code to awesome demos) and a variety of guests (who can forget Ward Bell is his white fur jacket?). So far, our audience has watched our episodes for well over 600,000 views! Thank you! As we revisit the lineup and start scheduling the next series of shows, Id like to do a quick poll on what your favorite 3 episodes have been. So please click on this link...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Is the use of hashbang really a good idea? [on hold]

    - by user32642
    I've been working on a WordPress site lately that was design with hashbang or shebang in the dynamically generated URLs. After doing some research, I noticed that there was some preference by Google in their use and how it crawled the site. However, after I ran several sitemap generators and Screaming Frog SEO Spider, I realized that the only page being crawled was the index page. So now I am questioning the use of hashbangs. What do you think? Should I attempt to remove them? Or will it even matter? And does anyone know of a easy way to remove this? The site is www.modernvintage1005.com

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  • Games with user-supplied artifical intelligence (AI) engines?

    - by RoboShop
    I remember Microsoft used to have this AI game for the .NET framework which allowed you to program a species and this species could be introduced to an "ecosystem" full of species that other people had programmed and they could interact with each other, etc. I can't remember what it was called, but I remembered thinking it was a pretty good idea. Are there any other similiar sites like that, which allows you to design some sort of AI engine and pit it against other programmer's creations? It could be an ecosystem type thing, or it could be a card or board game.

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  • Enterprise 2.0 - How to

    - by me
    Today I had a very interesting lecture at the  Fachhochschule Nordostschweiz "Hochschule für Wirtschaft" around How to design & implement an Enterprise 2. 0 solution. We had a great (and sometime pretty skeptical)  discussion around Social Value Models. The presentation can be found below. Enterprise 2.0 - How to View more presentations from Peter Reiser Feedback are always welcome.

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  • What steps should be taken to ensure that an open source database gets ready for production?

    - by I_like_traffic_lights
    I am considering using GridSQL in a production environment. However, I do have some indications that it is not ready. One is that it got excluded by the offering of EnterpriseDB a while ago, and the forums seem to report a few wrong results and relatively severe bugs. The alternatives to GridSQL, however cost around 100.000$ to buy, so I was thinking to utilize some of this money to ensure that GridSQL gets ready for production. At the same time, I could risk spending 50.000$ and months of work on the development of GridSQL, just to discover that the design was flawed and that a complete rewrite is needed. Then I would have to buy the commercial alternatives to GridSQL and the existence of my startup would be at risk. Question What steps would you take to ensure that there is as little risk as possible that the worst case scenario described above would happen? It is unrealistic that I could do much testing nor code review/coding myself (I am also not the best developer), so please describe where to find the guys that would need to do the work.

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  • SharePoint 2010: Architecture and Planning information

    - by Enrique Lima
    Recently I have been delivering Design and Planning Sessions at client sites, and as of recent SharePoint 2010 has been part of that mix. After the activity that goes on during those sessions getting towards the end of them is always a cross roads for clients.  Why?  Because it is time to kick the wheels.  Remind them, and remember, this is not a 1 or 4 weeks ordeal.  This has to be very well planned. If I am looking for information that is worth while and a great conversation starter, my landing point is the TechNet Library.  Here is focus on the Planning and Architecture documentation.  There are some great pieces of info, and a great set of planning worksheets. Here is the link to this section … http://technet.microsoft.com/en-us/library/cc261834.aspx

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  • Nokia promet une tablette sous Windows 8 et un smartphone "révolutionnaire" qui n'aura plus besoin d'être touché ou regardé

    Nokia promet une tablette sous Windows 8 et un smartphone "révolutionnaire" "Que les utilisateurs n'auront plus besoin de regarder ou de toucher" Le magazine spécialisé DigiTimes rapportait dans l'un de ses articles paru le 12 mars dernier que Nokia sous-traiterait actuellement la production d'une tablette de 10 pouces à une société chinoise, Compal Electronics. Selon ce même article, 200 000 unités seraient conçues dans un premier temps pour une commercialisation prévue au quatrième trimestre de cette année. Une nouvelle que Marko Ahtisaari, vice-président senior de la section Design de Nokia, a confirmé dans un entretien accordé au magazine finlandais Kavppalehti O...

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  • Should I use XNA (C#) or Java to create a basic game engine?

    - by Xboxking
    My project is to design and build a game engine (in just about 3 months). I've been looking at two options for this game engine, either make it with XNA (and C#) or Java. My experience with XNA/C# is zero to none, however I have been a Java programmer for around 4 years. I've had a little play around with both but I am still not sure what would be best to use (i.e. what would turn out better with my experience). XNA is obviously for making games and I would presume making a game engine would be slightly easier in this - however that said, there are numerous libraries available in Java that could be used for a game engine (such as lwjgl). What would be my best option and ideally produce the best results out of both XNA or Java? For your information, the game engine at the moment is a 2D one and is not too advanced (although I plan to extend it in the future). Thanks in advance for all answers!

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  • Criteria for a language to be considered "object oriented"

    - by nist
    I had a discussion about OO programming today and by browsing the internet I found a lot of different specifications for object oriented languages. What are the requirements for a language to be object oriented? For myself an object oriented language must have classes, inheritance and encapsulation. Is C an object oriented language just because you can use structs and program with an object oriented design? Why/ why not? Are there any good sites/articles about this? And please, no Wikipedia links because I've already been there.

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  • In what way I can implement packet filtering function in C++/C#?

    - by Network study
    Background: I am going to design a firewall-like application (with GUI) which will include several functions such as Packet sniffing and packet filtering. Both of the functions should be implemented to support different protocol levels including application, transport, network and link layer. I only know a little in C#.Net programming to perform the IP packet sniffing. It is also known that packet filtering requires the techniques in WFP or LSP and packet sniffing in application requires dll hooking. Questions: I am not sure which programming language(either C++ or C#) would be suitable for designing such an application described above. If I want to implement the packet filtering function, any libraries will be needed? edit01: Someone suggest that winDivert would be helpful, is it true?

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  • Will learning wxpython worth it in future? [on hold]

    - by user108437
    As we know that microsoft has been pushing Windows 8.1 which strongly uses XAML to design the app and for windows desktop mode WPF is another framework (which probably some thinks it fails) However, in old times, developer write windows form software using MFC or something alike that they have to do their own main loop, etc, etc, and I recently loves python and learning python certainly worth it, since there are still ironpython out there that uses .NET, but I am not sure whether my move to also learn wxpython for building windows software that does not requires .NET worth it also i notice wxpython is somehow old and still uses python 2.7, while today, python already version 3.3, beside that the books are old book published in 2007, and there seems no much hype on building windows form without .NET anymore because .NET is mostly preinstalled in new windows version. So my humble question is, whether should I learn python + wxpython or only python? Is there any benefit that I might not notice for capable in writing windows application that does not use .NET?

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  • Desktop GUI Client - Remote RDBMS communication

    - by magom001
    Sorry if I am asking a trivial question but I have been searching for a while without any luck. I need to design a system and I am looking for advice on the technology that should be used. The layout is very simple: it is a sales application with a centralized database and multiple clients. Each salesperson has GUI app installed on his/her laptop that should be able to connect to the database to retrieve data and upload data (i.e. register new orders). My question is the following: how should the communication between the client and the server be implemented? I doubt that connecting directly to the RDBMS is a good idea... Should I use web-services? XML-RPC? How to implement authentication and encode the data? Thanks for your advice!

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  • Google I/O 2012 - The Web Can Do That!?

    Google I/O 2012 - The Web Can Do That!? Eric Bidelman The web is changing so quickly that it's hard to keep up with what's new in the platform. HTML5's new capabilities allow developers to build a whole new suite of applications - things that were once impossible to do, are now a reality. This session will walk you down the bleeding edge of HTML5 for 2012 by focusing on in-depth techniques, which solve real world challenges. We'll cover media capture, file I/O, advanced usage of websockets, media streaming, device input, multimedia, and modern css design. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 361 37 ratings Time: 43:07 More in Science & Technology

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  • Is there a title for someone who is both a Software Developer and a Business Analyst?

    - by gyin
    I usually see two job titles in the IT industry. My understanding of their most commonly accepted usage (simplified): Business Analyst: Main role is eliciting the users' needs Software Developer Main role is to design, build and test a software solution answering the needs I'm wondering: "How we should call somebody whose role is to do both of the roles above?" Is this a common job title? And is trying to find people with these broadness of skills realistic, difficult? EDIT: I'm specifically interested to name Lead Software Developers who have eventually learned and can apply techniques of Business Analysis.

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