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• Do you want to be an officially certified Oracle ADF Developer?

  - by Grant Ronald

  We have just released an official certification exam for Oracle ADF Development.  This exam is aimed that those who are already getting hands-on with ADF and would like an official certification of their development skills. I was involved in writing some of the exam questions and this was an interesting experience.  We were looking to test not only a knowledge of the framework, but also a practical application of that knowledge.  Trying to do that in a clear question which related to multiple choice questions was sometimes difficult but I think we’ve produced a testing exam which, if you pass, shows a strong practical knowledge of ADF. Enjoy!

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• Is there a good reference manual for ruby/rails?

  - by Kevin

  I've found switching from Java to Ruby/Rails to be very difficult. I feel like the rails books and websites that I've seen are program by example, and I have yet to see anything like a complete reference. In the java/spring world there is plenty of examples but also very thorough reference manuals. So even though I can get toy application xyz up and running in an afternoon with rails I'm apprehensive about doing anything of significance. I'm willing to admit that maybe this is because I've done java/spring for a few years and have near zero experience with ruby/rails. Just wondering if anyone else has run into this or if I'm missing something.

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• React to a modified directory

  - by Ghanshyam Rathod

  In linux everything is considered as file, Now if I want to find only folders/directories not the files then how can i do that? I am getting all the modified files with the following command. find /Users/ghanshyam -type f -mmin -5 -print My goal is to generate the log file with all the modified/access folders. Here two options are available. create a module and call every time when a folder is modified (this one is bit difficult because I need to check particular event) create a cron task that will run after every 5 minutes. cron task will execute shell script and generate the log entries with the modified folders. Do you have any other option to do this task ?

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• Can you shade a specific section of a sprite? If so, how? [Java]

  - by l5p4ngl312

  I have been working on an isometric minecraft-esque game engine for a strategy game I plan on making. As you can see, it really needs some sort of shading. It is difficult to distinguish between separate elevations when the camera is facing away from the slope because everything is the same shade. So my question is: can I shade just a specific section of a sprite? All of those blocks are just sprites, so if I shaded the entire image, it would shade the whole block. I am using LWJGL. Heres a link to a screenshot from the engine: http://i44.tinypic.com/qxqlix.jpg

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• Chargeback and billing across public and private clouds

  - by llaszews

  Had a great conversation today regarding the need for metering, chargeback, and billing of cloud computing resources. The person I spoken with at a Fortune 1000 company increased the scope and magnitude of the issue of billing for cloud computing resources beyond what I had previously considered. I believed that doing any type of chargeback and billing for one public, private or hybrid installation was difficult. This person pointed out that the problem is even bigger in scope. The reality is many companies are using multiple public cloud vendors and have many different private cloud data centers. A customer may use AWS for some smaller public cloud applications, Salesforce.com (SaaS), Rackspace for IaaS, Savvis for colocation and a variety of Iaas and PaaS implementations for the private cloud. How does a company get a consolidated bill for all these different cloud environments? I am not sure their is an answer right now.

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• Menus and text boxes look graphically corrupted in 12.10

  - by Stanton.Sculpture

  If I let my computer run long enough the screen gets glitchy or graphically corrupted only in certain areas i.e. in text related boxes, menus, menu bars, scroll bars, the system monitor window, etc. It becomes difficult to read what I am typing. Its been happening quite often and I can only fix it by restarting the computer, but its only a matter of time before it happens again. Don't know what else to do, its been a thorn in my side for quite some time now and I need a fix soon because its only gets more frequent until I'm rebooting my computer five times a day. I attached a picture of what happens to this bug report: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1083474 I know I can repeat this bug but I don't know how to catch it and document it. Any help would be greatly appreciated. Thank you

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• Is JQuery or Javascript are capable for image processing?

  - by adietan63

  My plan is to develop a web based application in the future. I think, i can named it "Booth Reservation System" for the Events companies here in our country. One of the main functionality of the system and the most tricky part/ difficult part is the user can upload a "floor plan"(the design of the area were the booth is located in any image format) then the user can select on the specific location on the floor plan to reserve the booth. Also, the user can create floor plan on the system as another functionality of the system. What do you think? What programming language that i can use to accomplished the system? thanks!

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• How Uranium Refinement Works [Video]

  - by Jason Fitzpatrick

  While building a nuclear weapon is a complex task in and of itself, the most difficult part is refining uranium. In this informative video, Bill Hammack explains. Weapons and power plants require uranium that contains a greater amount of the isotope uranium-235 than found in natural uranium, which is mostly uranium-238. He outlines the key difficulty in separating the two isotope: They have nearly identical properties. He explains the two key methods for separation: Gas diffusion and centrifuges. What Keeps Nuclear Weapons from Proliferating HTG Explains: What Is Two-Factor Authentication and Should I Be Using It? HTG Explains: What Is Windows RT and What Does It Mean To Me? HTG Explains: How Windows 8′s Secure Boot Feature Works & What It Means for Linux

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• Why did visual programming never take off and what future paradigms might change that?

  - by Rego

  As the number of "visual" OS's such as Android, iOS and the promised Windows 8 are becoming more popular, it does not seem to me that we programmers have new ways to code using these new technologies, due to a possible lack in new visual programming languages paradigms. I've seen several discussions about incompatibilities between the current coding development environment, and the new OS approaches from Windows 8, Android and other tablets OS's. I mean, today if we have a new tablet, it's almost a requirement for coding, to have, for instance, an external keyboard (due it seems to me it's very difficult to program using the touch screen), exactly because the coding assistance is not conceived to "write" thousands of lines of code. So, how advanced should be the "new" visual programming languages paradigms? Which characteristics these new paradigms would be required?

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• Any tips to learn how to program with severe ADHD?

  - by twinbornJoint

  I have a difficult time trying to learn how to program from straight text-books. Video training seems to work well for me in my past experiences with PHP. I am trying my hardest to stay focussed and push through. Specifically I am looking to start indie game development. Over the last two weeks I have been trying to pick the "right" language and framework to develop with. I started going through Python, but I am not really enjoying the language so far. I am constantly looking through this website to compare this language to that, and keep getting distracted. Aside from all of this, is it possible to become a programmer when you have trouble focussing? Has anyone been through this that can recommend some advice? edit - you guys can check my new question out with detailed information thanks to all of the responses from this thread. http://programmers.stackexchange.com/questions/15916/what-is-the-best-language-and-framework-for-my-situation

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• What do you look for when debugging deadlocks?

  - by Michael K

  Recently I've been working on projects that heavily use threading. I think that I'm OK at designing them; use stateless design as much as possible, lock access to all resources that more than one thread needs, etc. My experience in functional programming has helped that immensely. However, when reading other people's thread code, I get confused. I am debugging a deadlock right now, and since the coding style and design are different from my personal style, I am having a difficult time seeing potential deadlock conditions. What do you look for when debugging deadlocks?

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• bad practice to create a print friendly page to remove the use of pdfs?

  - by Phil

  the company I work for has a one page invoice that uses the library tcpdf. they wanted to do some design changes that I found are just incredibly difficult for setting up in .pdf format. using html/css I could easily create the page and have it print very nicely, but I have a feeling that I am over looking something. is it a good practice to set up a page just for printing? and if not, is it at least better than putting out a ugly .pdf? I could also use the CSS inline so that if they wanted to download it and open it they could.

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• To use Dart, the Java programmer has to work with 2 languages? [closed]

  - by Sridhar-Sarnobat

  When deciding on a technology to use for web apps, it's become a difficult choice between GWT and Dart and I am looking for guidance in deciding. GWT is a java programmer's dream because they don't have to learn a new language or have to worry about a separate IDE or extra plugin etc. GWT was sold using this value proposition - one didn't need to program in Javascript. But are Google making a U-turn and saying "go through the hassle of learning a new language" afterall? Or is it intended for there to be a Java to Dart compiler so that Java developers do not have to learn a new language? (this is not a rant, so I don't know why you are down-voting the question) Note: "the syntax is very similar" is not a justification. You could say why bother with GWT and just work with Java + Javascript directly.

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• The perfect RDP experience from Mac to Windows

  - by Sahil Malik

  SharePoint, WCF and Azure Trainings: more information For the reasons I mentioned in my keyboard remapping blog post, I live in a Mac+PC world. This means, I find myself frequently RDP’ing to Windows Machines from my Mac. And yes, that Metro UI on RDP is even more frustrating than it is without RDP. Mac is a different OS than Windows (duh!), and the way it handles multiple screens and spaces is entirely different from windows. This means, RDP experiences are tough to make 100% seamless. You can see the frustrations in the various reviews on the Microsoft RDP app on the Mac app store. It can be difficult to find the perfect settings for the perfect user experience. Well, here they are - Read full article ....

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• Software/Application needed to store and organize random content [on hold]

  - by Rami.Shareef

  I have the need to store random contents (on my local hard drive/ laptop hard drive) for personal use so I can look these contents up later on when I need them. What I mean by random content is one of the following: Some sort of code Random fact Css / html / Javascript tips Or anything I might find interesting and want to keep for future reference I want to look up these entries by tags, the software should give me the ability to associate every entry with one tag or more. I have been having difficult time find applications offer this functionality, it is like a local database with search ability and easy data-entry methods. I can build one, but I don't have the time to invest in doing so. Can you refer me to any application/software that can do that, it would be great. It does not matter if it is paid or free.

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• Turning my mobile boardband into Wifi with my laptop using Kubuntu 12.04 to use it in my desktop PC

  - by Suhail cholassery

  Its been 3 or 4 months since I started using 12.04. What I want to do is very clear: Turn my mobile broadband connection into Wifi connection with my laptop using Kubuntu 12.04 to use it in my desktop PC. I browsed through most of the questions related to this (ad- hoc connections, bridging mobile broadband with Wifi, etc). I also read the ICS article, but I found those too difficult to digest. I hope that there is some other way to do this. I request you to give me a practical and applicable answer . I am not trying duplicate any other existing question.

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• Does anyone have a good example/sample of "goto" spaghetti code? [closed]

  - by ArtB

  I've read a lot about how GoTo was considered harmful and removed for other control structures that were more intuitive. Does anyone have a good example / sample of goto spaghetti code? Preferrably, the sample code should be difficult to follow, but realtively easy when rewritten into more conventional control structures. I know I could try to write you some of my own, but I've never really used goto and don't think I could due justice to the headaches its abuse can lead to. I want this for didactic purposes to train junior developers on what to avoid. Mainly, to point to illustrate how OOP is taking the same idea to next logical consequence. EDIT: by good example I mean code that is terrible to read and abuses it, rather than code that uses goto for reasonable optimization

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• Getting software development Jobs oversees [on hold]

  - by Mario Dennis

  I live in Jamaica and I am currently pursuing a Bsc. in Computer Information Science. I have worked on a few projects and have learn Struts 2, Play Framework, Spring, Mockito, JUnit, Backbone.js etc in my spear time. I have also learn about SOLID and DRY software development as well as architecting software system using Service Oriented Architecture and N-tier Architecture. What I want to know is given all of this can I get a job oversees before completing a degree, how difficult will it be, and what is the best way to go about doing it?

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• Can desktop applications be written using javascript?

  - by jase21

  Is it currently possible to write desktop applications using javascript, html, css? Possible solutions: Use Adobe AIR runtime and program in js. But no, if I'm using AIR, the AS3 suites it the most. So not a good option. GWT: No because it uses Java and then convert it to js or what ever. Pyjamas: Interesting. But I'm currently focusing on JavaScript. So I don't want to use python and cross-compile to js. Run a local server and use the browser in full screen mode. Sort of okay, but still its the same browser thing. And difficult to distribute. So what is the best option? I'm excited about node.js which is the main reason for looking into JavaScript. Otherwise I would have choose python.

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• Visual Studio 2010 JavaScript Intellisense Behavior

  After I installed Visual Studio 2010 I was having a difficult time editing .js files in Visual Studio. I habitually type the "(" character as soon as the function I want to call is highlighted in the Intellisense window, but in 2010 this behavior was no longer auto-completing the function name. At first I thought this behavior was due to the new "suggestion mode" in Intellisense, but no amount of toggling with CTRL+ALT+SPACE would bring back the auto-complete behavior. It turns out the two...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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• C: What is a good source to teach standard/basic code conventions to someone newly learning the language?

  - by shan23

  I'm tutoring someone who can be described as a rank newcomer in C. Understandably, she does not know much about coding conventions generally practiced, and hence all her programs tend to use single letter vars, mismatched spacing/indentation and the like, making it very difficult to read/debug her endeavors. My question is, is there a link/set of guidelines and examples which she can use for adopting basic code conventions ? It should not be too arcane as to scare her off, yet inclusive enough to have the basics covered (so that no one woulc wince looking at the code). Any suggestions ?

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• How do you write straight to the point documentation without looking sloppy and informal?

  - by James

  I'm currently at a contract position and am looking to add to the documentation of the projects I worked on, to assist the next hiree taking over my projects. The documentation I received was overly technical (i.e. references code right away, references replacing certain values on certain lines, no high level description at all) How do I write documentation in simple plain English that is of actual benefit without looking sloppy? I find it difficult in areas such as outlining a system's flaws without coming off as judgmental, but still emphasize the severity of how detrimental some of the flaws are.

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• What are the most important languages to localize for on the App Store?

  - by Kevin Y

  It's obvious that to gain more customers on any given platform, one of the most important steps to take would be to localize your software into many languages: as many as possible, ideally. However, with independently developed apps, it tends to be difficult to localize into many different languages, due to not having the budget and / or time to do so. My question is if I were to localize my apps into languages other than English on the iOS App Store, which languages should I prioritize? (Maybe the top three or four most important.) (Also, let's pretend this is a generic app that won't cater more to one language demographic than another.)

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• LibreOffice Spell Checker doesn't work?

  - by Michael

  I was a little surprised to discover that in LibreOffice (3.5.4.2), the spell check doesn't actually work. I was surprised since spell checkers have been around since....80's? Not a difficult thing. I am running Ubuntu 12.04, on a relatively new install. I haven't done anything to my dictionaries or language files. Under toolsoptionslanguages writing aids, I have the option selected to check as I type and to use the English dictionaries. However, I get no errors when I type spelling mistakes on purpose, and when I run the checker it just says the spell check has completed and closes the window. Is this a bug with Libre? or have I done something wrong?

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• How many achievements should I include, and of what challenge?

  - by stephelton

  I know this question is fairy broad and subjective, but I'm wondering if there's been any published research into what an optimal number of achievements is and what kind of challenge they should present. The game this question directly relates to is a shoot-em-up, but an ideal answer is fairly theoretical. If there are there are too few achievements, or they are not challenging, I would expect they would fail in their goal to keep people playing. If there are too many, or they are unreasonably difficult, I would expect people to quickly give up. I personally witnessed the latter happening in Starcraft 2; a section of the achievements would have you win hundreds of games against their AI opponents (boring!)

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