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• Best C# database communication technique

  - by user65439

  A few days ago I read a reply to a question where people said that the days of writing queries within your c# code are long gone. I'm not sure what the specific person meant with the comment but it got me thinking. At the company I'm currently working at we maintain an assembly containing all the queries to the database (let's call it Queries), this assembly is reference by a QueryService (Retrieve the correct queries) assembly which in turn is referenced by a UnitOfWork assembly (The database connector classes, we have different connector classes for SQL, MySQL etc.). We use these three assemblies to perform operations on our database and all queries/commands are written in our C# code. Is there a better way to communicate with the database and is there a better way to communicate with different database types?

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• Oracle E-Business Supply Chain Suite Release 12.1.2: Latest & Greatest!

  - by [email protected]

  This week we hosted one of several planned orientation and training sessions for the ASR/ASM sales community.  The purpose of the session was to orient our contact center and marketing associates with the 'hotpoints' of the latest release and to provide a few 'snippets' for the scheduled 'call-down' to the installed base.  Oracle EBS Release 12.1.2 contains some of the most powerful supply chain applications technology available to the industrial, commercial and public sector communities.  They should all be taking advantage of this great capability to drive margins, control costs and achieve compliance.   In today's changing business landscape, organizations need competitive advantage and we see that R12 provides this capability according to our customers leveraging the upgrade.

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• Self Documenting Code Vs. Commented Code

  - by Phill

  I had a search but didn't find what I was looking for, please feel free to link me if this question has already being asked. Earlier this month this post was made: http://net.tutsplus.com/tutorials/php/why-youre-a-bad-php-programmer/ Basically to sum it up, you're a bad programmer if you don't write comments. My personal opinion is that code should be descriptive and mostly not require comment's unless the code cannot be self describing. In the example given // Get the extension off the image filename $pieces = explode('.', $image_name); $extension = array_pop($pieces); The author said this code should be given a comment, my personal opinion is the code should be a function call that is descriptive: $extension = GetFileExtension($image_filename); However in the comments someone actually made just that suggestion: http://net.tutsplus.com/tutorials/php/why-youre-a-bad-php-programmer/comment-page-2/#comment-357130 The author responded by saying the commenter was "one of those people", i.e, a bad programmer. What are everyone elses views on Self Describing Code vs Commenting Code?

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• Xna Loading Screens

  - by Cyral

  I'm making a 2D XNA game. I'd like to implement loading screens when stuff has to load for a while. Like when I login to an account, connect to the server, and generate worlds. I'm pretty sure it needs to be multithreaded, because I want to be able to do something like "Generating World 10%...11%...". GenerateWorld() { //Call StartLoading("Generating World"); or something //Starter generating, Updating progress... //End loading screen and fade into world } Help appreciated, I'm new.

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• alternative to environment variables

  - by tonyl7126

  The amount of servers and the complexity of our application is growing and we now have servers in different regions (hosted on AWS). Certain database operations require low latency so we have stuck a database in each region (which is basically a user cache) to keep the network latency low. The way the application server currently knows which user cache/database to make its call to depends on an environemnt variable set in it. This has been working fine, but it seems hacky and not optimal. Is there any way for this to be done automatically? I was considering using a package like fping and pinging each database when the app server reloads (or caching it the first time) and using the corresponding latencies to decide which database has the lowest latency for each app server. Not sure if this is the best idea though.

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• How do you dive into large code bases?

  - by miku

  What tools and techniques do you use for exploring and learning an unknown code base? I am thinking of tools like grep, ctags, unit-tests, functional test, class-diagram generators, call graphs, code metrics like sloccount and so on. I'd be interested in your experiences, the helpers you used or wrote yourself and the size of the codebase, with which you worked with. I realize, that this is also a process (happening over time) and that learning can mean "can give a ten minute intro" to "can refactor and shrink this to 30% of the size". Let's leave that open for now.

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• Byte Size Tips: How to Stop OS X from Changing the Display Brightness Automatically

  - by The Geek

  After getting a new MacBook Air and deciding to try out OS X for a while, I started wondering why the battery would suddenly start dying really fast, but only when I was sitting at the kitchen table. That’s when I noticed the display brightness kept changing on its own… and realized the problem. OS X, just like your phone, and any modern device, tries to figure out the brightness of the room you’re in, and adjust the brightness of the screen. If you are over in Windows, it’s called “Adaptive” brightness, while your phone will just call it “Auto”. While this technology is great in theory, I don’t really need max brightness all the time, and I like to control it manually to make sure I’m getting the best battery life. Open up System Preferences, head to Displays. Then uncheck the Automatically adjust brightness setting.     

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• Alpha blend 3D png texture in XNA

  - by ProgrammerAtWork

  I'm trying to draw a partly transparent texture a plane, but the problem is that it's incorrectly displaying what is behind that texture. Pseudo code: vertices1 basiceffect1 // The vertices of vertices1 are located BEHIND vertices2 vertices2 basiceffect2 // The vertices of vertices2 are located IN FRONT vertices1 GraphicsDevice.Clear(Blue); PrimitiveBatch.Begin(); //if I draw like this: PrimitiveBatch.Draw(vertices1, trianglestrip, basiceffect1) PrimitiveBatch.Draw(vertices2, trianglestrip, basiceffect2) //Everything gets draw correctly, I can see the texture of vertices2 trough //the transparent parts of vertices1 //but if I draw like this: PrimitiveBatch.Draw(vertices2, trianglestrip, basiceffect2) PrimitiveBatch.Draw(vertices1, trianglestrip, basiceffect1) //I cannot see the texture of vertices1 in behind the texture of vertices2 //Instead, the texture vertices2 gets drawn, and the transparent parts are blue //The clear color PrimitiveBatch.Draw(vertice PrimitiveBatch.End(); My question is, Why does the order in which I call draw matter?

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• How to write reusable code in node.js

  - by lortabac

  I am trying to understand how to design node.js applications, but it seems there is something I can't grasp about asynchronous programming. Let's say my application needs to access a database. In a synchronous environment I would implement a data access class with a read() method, returning an associative array. In node.js, because code is executed asynchronously, this method can't return a value, so, after execution, it will have to "do" something as a side effect. It will then contain some code which does something else than just reading data. Let's suppose I want to call this method multiple times, each time with a different success callback. Since the callback is included in the method itself, I can't find a clean way to do this without either duplicating the method or specifying all possible callbacks in a long switch statement. What is the proper way to handle this problem? Am I approaching it the wrong way?

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• Oracle VM & Virtualisation

  - by Alex Blyth

  Hi AllHere are the details for Wednesday's (28th April 2010) webcast on "Oracle VM & Virtualisation" with Special Guest - Dean Samuels, Principal Sales Consultant for Oracle VM and Oracle Enterprise Linux -  beginning at 1.30pm (Sydney, Australia Time) :Webcast is at http://strtc.oracle.com (IE6, 7 & 8 supported only)Conference ID for the webcast is 6690427Conference Key: oraclevmEnrollment is required. Please click here to enroll.Please use your real name in the name field (just makes it easier for us to help you out if we can't answer your questions on the call)Audio details:NZ Toll Free - 0800 888 157 orAU Toll Free - 1800420354 (or +61 2 8064 0613Meeting ID: 7914841Meeting Passcode: 28042010Talk to you all tomorrowAlex

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• Renderbuffer to GLSL shader?

  - by Dan

  I have a software that performs volume rendering through a raycasting approach. The actual raycasting shader writes the raycasted volume depth into a framebuffer object, through gl_FragDepth, that I bind before calling the shader. The problem I have is that I would like to use this depth in another shader that I call later on. I figured out that the only way to do that is to bind the framebuffer once the raycasting has finished, read the depthmap through something like glReadPixels(0, 0, m_winSize.x , m_winSize.y, GL_DEPTH_COMPONENT, GL_FLOAT, pixels); and write it to a 2D texture as usual glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT24, m_winSize.x, m_winSize.y, 0, GL_DEPTH_COMPONENT, GL_FLOAT, pixels) and then pass this 2D texture that contains a simple depth map to the other shader. However, I am not entirely sure that what I do is the proper way to do this. Is there anyway to pass the framebuffer that I fill up in my raycasting shader to the other shader?

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• Backward compatibility with event-sourcing

  - by Tomas Jansson

  How do you stay backward compatible with event-sourcing? Let say you release a version that has one kind of event, let call it X. You know how to handle that event in all the systems that extracts the events from the event source. In a later release you make a change to event X or delete it, how do you stay backward compatible with that? To have a fully functional system you need to be able to handle the old event as the same time as you need to handle the updated version. Or if you delete that event type, then you will be stuck with code that is only there to handle legacy events which in my head can be a little bit messy in the long run.

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• How do you visually represent programming skills?

  - by TomSchober

  I had a discussion with a recruiter recently that made me wish I could visually represent programming skills. In trying to explain how skills relate, what are the important properties of those skills? Would a tagging model work (i.e. "Design Pattern," "Programming Language," "IDE," or "VCS")? Are they really hierarchical? Clarification: The real problem I see is communicating the level of granularity among skill sets. For instance saying someone "knows Java" is a uselessly broad term in describing what someone can DO. However saying they know how to write web services with the Java Programming language is a bit better. To go even further, saying they know Spring as a tool under all that is probably specific enough. What should we call those levels of granularity? What are the relationships between the terms we use? i.e. Framework to Language, Tool to Language, Framework to Solution(like web services), etc.

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• cannot open ubuntu software center

  - by success

  I deleted some unnecessary icon themes and now my application icons are changed. I cannot open Ubuntu software center also.... the following message is displayed.... success@user-pc:~$ software-center 2012-09-12 22:24:52,048 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2012-09-12 22:24:52,055 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True Traceback (most recent call last): File "/usr/bin/software-center", line 142, in <module> app = SoftwareCenterAppGtk3(datadir, xapian_base_path, options, args) File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 387, in __init__ self.datadir) File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/historypane.py", line 78, in __init__ self._get_emblems(self.icons) File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/historypane.py", line 192, in _get_emblems pb = icons.load_icon(emblem, self.ICON_SIZE, 0) File "/usr/lib/python2.7/dist-packages/gi/types.py", line 43, in function return info.invoke(*args, **kwargs) gi._glib.GError: Icon 'package-install' not present in theme I also tried the following code to change the icon but no didnt work.... gksu gedit /usr/share/applications/ubuntu-software-center.desktop

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• Why do operating systems do low level stuff in C and C++? Why not just C++?

  - by Cole Johnson

  On the Wikipedia page for Windows, it states the Windows is written in Assembly for the bootloader and task switcher, and C and C++ for kernel routines. This confuses me because AFAIK, you can call C++ functions from an extern "C"'d block as C++ is just C with extra features (all of which can be rewritten in C if you wanted to AFAIK). I can get using C for the kernel functions so pure C apps can use them (like printf and such), but if they can just be wrapped in an extern "C " block, then why code in C? So my question is: Why would a kernel be written in both C and C++ instead of just C++

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• TFS vs. Star Team comparison

  - by ryanabr

  I have a sales call today in which the person that I am talking to is interested in what TFS would give them over Star Team, The first thing I believe that I can say is that TFS is cheaper! Especially if you are doing MSFT development already and your team members have MSDN subscriptions as the CALs for TFS are covered in the MSDN subscription. The other thing that I noticed about Star Team was all of the references to ‘readiness’ and ‘integration’. While that is great, that means that other tools will be needed to provide the features that are already bundled with TFS like, SharePoint integration, as well as Analysis Services and Reporting Services to provide visibility on the web with reports on project health, and team velocity. Below is a quick table that I was able to throw together to answer some high level questions: Feature TFS Star Team Work Items X X Work Item custom Queries X X Customizable Work Items X Web Portal View X X Reporting X Integration Version Control X X Build Management X Integration Integrated Test Suite X Integration Cost Free for first 5 / MSDN Sub covers others $7500 / seat

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• Gnome Mplayer failed to open VDPAU backend libvdpau_nvidia.so

  - by Tim

  When I open an avi file under Gnome Mplayer, there is an error report: Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory I then followed this blog to solve this problem, which suggests two ways. The first way is to call mplayer in terminal: mplayer -vo xv video.wmv This works for me. But I would like to try the second way, which is to write options in one of the configure files of Gnome Mplayer. I choose to write into ~/.mplayer/config, where I wrote: -vo xv But it does not work. So I was wondering if I make any mistake? What to write into the configure file? Thanks and regards!

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• Builder Pattern: When to fail?

  - by skiwi

  When implementing the Builder Pattern, I often find myself confused with when to let building fail and I even manage to take different stands on the matter every few days. First some explanation: With failing early I mean that building an object should fail as soon as an invalid parameter is passed in. So inside the SomeObjectBuilder. With failing late I mean that building an object only can fail on the build() call that implicitely calls a constructor of the object to be built. Then some arguments: In favor of failing late: A builder class should be no more than a class that simply holds values. Moreover, it leads to less code duplication. In favor of failing early: A general approach in software programming is that you want to detect issues as early as possible and therefore the most logical place to check would be in the builder class' constructor, 'setters' and ultimately in the build method. What is the general concensus about this?

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• Synchronization between game logic thread and rendering thread

  - by user782220

  How does one separate game logic and rendering? I know there seem to already be questions on here asking exactly that but the answers are not satisfactory to me. From what I understand so far the point of separating them into different threads is so that game logic can start running for the next tick immediately instead of waiting for the next vsync where rendering finally returns from the swapbuffer call its been blocking on. But specifically what data structures are used to prevent race conditions between the game logic thread and the rendering thread. Presumably the rendering thread needs access to various variables to figure out what to draw, but game logic could be updating these same variables. Is there a de facto standard technique for handling this problem. Maybe like copy the data needed by the rendering thread after every execution of the game logic. Whatever the solution is will the overhead of synchronization or whatever be less than just running everything single threaded?

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• Any valid reason to Nest Master Pages in ASP.Net rather than Inherit?

  - by James P. Wright

  Currently in a debate at work and I cannot fathom why someone would intentionally avoid Inheritance with Master Pages. For reference here is the project setup: BaseProject MainMasterPage SomeEvent SiteProject SiteMasterPage nested MainMasterPage OtherSiteProject MainMasterPage (from BaseProject) The debate came up because some code in BaseProject needs to know about "SomeEvent". With the setup above, the code in BaseProject needs to call this.Master.Master. That same code in BaseProject also applies to OtherSiteProject which is just accessed as this.Master. SiteMasterPage has no code differences, only HTML differences. If SiteMasterPage Inherits MainMasterPage rather than Nests it, then all code is valid as this.Master. Can anyone think of a reason why to use a Nested Master Page here instead of an Inherited one?

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• embedding LEFT OUTER JOIN within INNER JOIN

  - by user3424954

  I am having some problems with one of the question's answered in the book "SQL FOR MERE MORTALS". Here is the problem statement Here is the Database Structure Here is the answer which I am unable to comprehend Here is an answer which looks perfect to me Now the problem with the first answer I am having is: We first use LEFT OUTER JOIN for recipe class and recipes. So it selects all recipe class rows but only matching recipes. Perfecty fine as the question is demanding. Lets call this result set R. Now in the next step when we use INNER JOIN to join RecipieIngridients, it should filter out the rows from R in which Recipie ID doesn't match with the Recipe Id in Recipie Ingredients and hence filtering out the related Recipe class and recipe description also(Since it filters out the entire row of R). So this contradicts with the problem which demands all recipieID and RecipieDescription to be displayed from Recipe_Classes Table in this very step only. How can it be correct. Or Am i Missing some concept.

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• Sending a android.content.Context parameter to a function with JNI

  - by Ef Es

  I am trying to create a method that checks for internet connection that needs a Context parameter. The JNIHelper allows me to call static functions with parameters, but I don't know how to "retrieve" Cocos2d-x Activity class to use it as a parameter. public static boolean isNetworkAvailable(Context context) { boolean haveConnectedWifi = false; boolean haveConnectedMobile = false; ConnectivityManager cm = (ConnectivityManager) context.getSystemService( Context.CONNECTIVITY_SERVICE); NetworkInfo[] netInfo = cm.getAllNetworkInfo(); for (NetworkInfo ni : netInfo) { if (ni.getTypeName().equalsIgnoreCase("WIFI")) if (ni.isConnected()) haveConnectedWifi = true; if (ni.getTypeName().equalsIgnoreCase("MOBILE")) if (ni.isConnected()) haveConnectedMobile = true; } return haveConnectedWifi || haveConnectedMobile; } and the c++ code is JniMethodInfo methodInfo; if ( !JniHelper::getStaticMethodInfo( methodInfo, "my/app/TestApp", "isNetworkAvailable", "(android/content/Context;)V")) { //error return; } CCLog( "Method found and loaded!"); methodInfo.env->CallStaticVoidMethod( methodInfo.classID, methodInfo.methodID); methodInfo.env->DeleteLocalRef( methodInfo.classID);

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• ODTUG is Looking for your ADF Feedback

  - by Shay Shmeltzer

  While we at Oracle are busy planning next month's Oracle OpenWorld - which should have one of the busiest schedule ever for ADF developers - another conference is also looking to know what you would like to learn about Oracle ADF. ODTUG is well on their way planning the upcoming KScope 13 conference - and they would like to better understand the needs of developers who are already working with ADF or of developers who are about to embark on their ADF road. They have put up a new short survey to collect your thoughts here. And while we are talking about KScrope it is worth mentioning that one easy way to get a free pass to that conference is to get accepted as a speaker and their call for papers is now open. Check it out and submit your ADF abstracts. And one last point about ODTUG - they just added several web seminars about ADF to their upcoming schedule of free online seminars - check it out and register now - membership is not required for attending the seminars.

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• Environment naming standards in software development?

  - by Marcus_33

  My project is currently suffering from environment naming issues. Different people have different assumptions as to what environments should be named or what the names designate, and it's causing confusion when discussing them. I've done a bit of research and I haven't found any standards out there. The terms include "Local", "Sand", "Dev", "Test", "User", "QA", "Staging" and "Prod" (plus a few more that different people have asked about) I'm not looking for just opinions, though if there's one out there that "everyone" has I'll take it - I'm trying to find definitions advanced by some sort of authority, even if it's unofficial. Here's the environments we currently use: Environment on the developer's PC Shared Environment where developers directly upload code to self-test Shared Environment where standards and functionality are tested by QA people Shared Environment where completed and QA-checked code is approved by project requesters Environment that mirrors the final environment as a final check and to prepare for deployment Final Environment where code is in use I know what I'd call them, but is there some sort of standard on this? Thanks in advance.

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• Google Webmaster tools and geotargeting at TLD and Folder levels

  - by user3390918

  Hoping you can help us with this question: We are one Canada’s leading websites with a PR8. For privacy's sake, let's call our main URL www.OurMainWebsite.com As we are expanding globally, we are planning to build a web site to service the US market but want to keep the domain above as is from branding perspective. Questions: Can we keep: www.OurMainWebsite.com as the main Canada site and create a www.OurMainWebsite.com/US as the US site? Can those 2 URL's be geotargetted as per above, and wouldn't the fact that US is a subfolder of the main TLD through things off? can I target a TLD to one country and a subfolder under the TLD to abother? Thanks in advance for your help.

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