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• What are you telling yourself if you can't understand new concept, paradigm, feature ... ?

  - by Freshblood

  Programming always required to learn new concepts, paradigms, features and technologies and I always have been failed at first attempt to understand new concept what i encounter. I start to blame and humiliate myself without remember before how i understood new concept which i hadn't understand it before. I can hardly stop to tell myself "why i cant understand ? Am i stupid or idiot ? Yes, i am stuppiiddddd!!!" What your inner voice tells if you can not understand new concept after spend long time till been tired or hopeless ? How do you handle your self-esteem in such situations ?

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• Methods to Validate User Supplied Data

  - by clifgray

  I am working on a website where users record data from certain locations and they input an address to tag that location with a GPS coordinate. Pretty frequently those locations are tagged more than a mile away from the actual location and I am trying to implement a few ways to validate the data. Right now I am thinkiing of: having a tag of location pages for other users to say "incorrect location" so I can go one by one and fix it letting users with a decent amount of experience (reputation) edit the location GPS coordinates making the location be validated by a mod before it goes live and they make sure it is a good location Are these reasonable? I know the first will take a lot of my time and I would love some suggestions.

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• Corona SDK (Lua) vs Native Obj-C for iPhone only word puzzle type game [closed]

  - by dodgy_coder

  I am trying to decide on whether to use the Corona SDK & Lua versus native Objective-C to develop an iOS app. This will be the first game on any smartphone I have developed and so its not that ambitious - a single player word puzzle type game - something sort of like scrabble. The advantages of Corona I can see are: Lua is probably easier to learn than Obj-C (shorter learning curve) meaning a possibly quicker development time Possibility to port to Android once its finished Advantages of native Obj-C are: Access to all and latest features of iOS More / faster available libraries Has anyone made this decision before? Are there any major advantages or disadvantages I've missed or got wrong here? Thanks.

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• Good questions to ask a potential new boss?

  - by David Johnstone

  I first asked this question on Stack Overflow, but it turns out this is a better place for it. Imagine you were working as a software developer. Imagine that the manager of your team leaves and your company is looking for a replacement. Imagine that as part of the hiring process you had the opportunity to talk with him. You are not the only person doing an interview, and while it is not ultimately your decision whether or not to hire him, you do have an influence. What questions would you ask? What would you talk with him about?

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• Which version of Java should I use for learning?

  - by Dan

  I am a QA engineer interested in mobile development and automation.I have basic programming experience (intermediate level Python, C++ programmer) and as most companies choose Java for writing frameworks I need to pickup Java. I use Ubutnu 12.04 LTS and I will be using Head First Java as learning material. When I searched for JDK options I found Oracle Java 6 and 7 and Open JDK. I read somewhere in Ubuntu forums that Java 6 is not recommended on Ubuntu systems and I am a little bit confused about which version should I use, that would be compatible with the book and the OS.

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• What should be included in risk management section of software's architecture documentation?

  - by Limbo Exile

  I am going to develop a Java application (a Spring Web application that will be used to extract data from various data sources) and I want to include risk management of the software in the architecture documentation. By risk management (I am not sure if this is the right name) I mean documenting possibilities of what can go wrong with the software and what to do in those cases. At first I tried to draft some lists, including things like database performance decrease, change of external components that the software interacts with, security breaches etc. But as I am not an experienced developer I cannot rely on those drafts, I don't think they are exhaustive. I searched web hoping to find something similar to the Joel Test or to find any other resource that will cite the most popular causes of problems that should be included and analyzed in risk management documentation, but I haven't found much. Finally, my question is: What should be included in risk management section of software's architecture documentation?

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• Visual Studio 2010 Is Here!

  I think back to the days of the first versions of Visual Studio (when it was called Visual Studio .NET, remember?) and I think about how far Microsoft has come with this IDE. It really is the best IDE on the market. There is so much to this IDE it is amazing. It now can really handle managing your complete software application development lifecycle. For me, it is (besides Windows 7) the best and most successful product Microsoft has developed. You can obviously get this now and it is available on...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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• Silverlight Client for Facebook updated for Silverlight 4 release

  Yet again, weve updated the Silverlight Client for Facebook for the Silverlight 4 release version. In order to use the updated one, you must follow these instructions: First, uninstall the previous version you have. This can be done in Add/Remove Programs on Windows or by just deleting the app on Mac. Ensure you have Silverlight 4 installed. If you are using the development tools and have installed Silverlight 4 developer tools, thats fine. If you are not a developer, visit http://microsoft.com/getsilverlight...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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• Ubuntu 12.04 Boot Error

  - by Aman

  My Laptop was working just fine a day back but it started show the following error on booting: error: couldn't read file So, I googled about it and used a Live-CD to use Boot-Repair as told here: "can't read file" error after installation causes system to not boot I was given this link: http://paste.ubuntu.com/1441528/ if there are issues still. I also tried to do it again by a Boot-Repair-Disk this time and now I am getting the following error: error: couldn't read file error: you need to load the kernel first The boot-repair-disk gave me this link: http://paste2.org/p/2609703 if there are further issues.

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• grub/burg listing a lot of os's

  - by Matthew

  I guess I've got more than one ubuntu installation (either two or three) along with a windows 7 installation. Each of the ubuntu installations also list something extra (maybe like a safe mode?) within grub. Firstly, how do I remove the ubuntu installations I don't use? (how do I first identify the one I do use? I log into it after booting it, but how do I delete the others) Also, how do I leave just a Windows 7 option and an Ubuntu option?

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• Dead keys in emacs with ibus

  - by Virgile

  I've just upgraded to 13.10 and noticed that dead keys are not working anymore in emacs (a keystroke to ' leads emacs to display <dead-acute> is undefined instead of waiting to the next key. In addition, use of the compose key leads to <Multi_key> is undefined and it is impossible to use keybindings such as <M-^>. Other applications work fine as far as I can tell. A brief search on the internet suggested to (require 'isotransl) to .emacs. This solves the first issue, but not the other ones. Another possible workaround seen on the web is to launch emacs with an empty XMODIFIERS variable, as XMODIFIERS='' emacs, instead of XMODIFIERS= @im=ibus which seems to be the default in 13.10. Then everything works fine, but it looks like a kludge. Is there a way to make emacs work with ibus on this subject?

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• Correct Rotation and Translation with a 4x4 matrix

  - by sFuller

  I am using a 4x4 matrix to transform verts in a shader. I multiply an identity matrix by a rotation matrix by a translation matrix. I am trying to first rotate the verts and then translate them, however in my result, it appears that the verts are being transformed and then rotated. My matrix looks something like this: m00 m01 m02 tx m10 m11 m12 ty m20 m21 m22 tz --- --- --- 1 I am not using OpenGL's fixed function pipeline, I am multiplying matrices on the client side, and uploading the matrix to a GLSL shader. If it helps, I am using my own matrix multiplication code, but I have recreated this problem using matrices on my graphing calculator, so I don't believe my matrix code has errors.. I'll include a visual aid if needed.

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• What is needed for a networked home printer?

  - by Jay

  I've seen this question: Home network printer recommendations but I think I'm asking something more basic. I'm not really familiar with networked printers or how they work or what they do really. What I'd like is to have a printer that is accessible to anyone connected to my home network, without having to plug into the printer itself. An alternative setup might to be to have a printer that is always hooked up to one computer, like a desktop, that is almost always on and allows other computers connected on the network to print to it as well. I believe the first option is called a networked printer and the second is printer sharing. But again I'm new to this so I don't really know the details or if I'm using the correct terminology. I was wondering if someone might be able to shed some light on this and let me know what is needed for either of these setup. Thanks.

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• Add Custom Launcher in 11.10

  - by sayth

  I started by searching guides. I found this guide but neither of the main methods works anymore in 11.10. The first solution, I have created the desktop file, however the file location given as .gconf-> desktop-> unity-> launcher -> favourites no longer exists. I can get to /home/sayth/.gconf/desktop but there is no longer a unity folder. The second solution described right-clicking the desktop and creating a launcher. Right-clicking the desktop no longer produces a "create a launcher" option. I manually installed geany 0.21 as the one in the repo's is outdated. It's installed and working correctly, and is executing from /usr/local/bin/geany. How can I add it to the launcher?

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• Conways Game of Life C#

  - by Darren Young

  Hi, Not sure if this is the correct place for this question or SO - mods please move if necessary. I am going to have a go at creating GoL over the weekend as a little test project : http://en.wikipedia.org/wiki/Conway's_Game_of_Life I understand the algorithm, however I just wanted to check regarding the implementation, from maybe somebody that has tried it. Essentially, my first (basic) implementation, will be a static grid at a set speed. If I understand correctly, these are the steps I will need: Initial seed Create 2d array with initial set up Foreach iteration, create temporary array, calculating each cells new state based on the Game of Life algorithm Assign temp array to proper array. Redraw grid from proper array. My concerns are over speed. When I am populating the grid from the array, would it simply be a case of looping through the array, assigning on or off to each grid cell and then redraw the grid? Am I on the correct path?

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• Identity Map Pattern and the Entity Framework

  - by nikolaosk

  This is going to be the seventh post of a series of posts regarding ASP.Net and the Entity Framework and how we can use Entity Framework to access our datastore. You can find the first one here , the second one here and the third one here , the fourth one here , the fifth one here and the sixth one here . I have a post regarding ASP.Net and EntityDataSource. You can read it here .I have 3 more posts on Profiling Entity Framework applications. You can have a look at them here , here and here . In...(read more)

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• Which is more maintainable -- boolean assignment via if/else or boolean expression?

  - by Bret Walker

  Which would be considered more maintainable? if (a == b) c = true; else c = false; or c = (a == b); I've tried looking in Code Complete, but can't find an answer. I think the first is more readable (you can literally read it out loud), which I also think makes it more maintainable. The second one certainly makes more sense and reduces code, but I'm not sure it's as maintainable for C# developers (I'd expect to see this idiom more in, for example, Python).

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• Week in Geek: New Security Hole Found Just Hours After Latest Java Update Released

  - by Asian Angel

  Our first edition of WIG for September is filled with news link coverage on topics such as Firefox 16 Beta introduces new command line feature for developers, Google to restore passwords lost using Chrome iOS app, new password stealing malware is targeting Linux & Mac OS X users, and more. Special Note: The title refers to the latest security update of Java just released this past Thursday. Please refer to our article on disabling Java here. Skull and crosshair targeting scope clipart courtesy of Clker.com. HTG Explains: How Windows Uses The Task Scheduler for System Tasks HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How

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• SEO and unique IDs in urls

  - by kokoko

  I have a web site who's home page is at http://domain.com when a new user first hits the web site I'm creating a unique id of 5 chars for them (for example 'abcde' and redirecting them to http://domain.com/abcde so they can later bookmark and return to their workspace. My question is what's the best approach for SEO purposes, I need the main url domain.com to be indexed but google will also get the redirect and will not index the main page. I know about canonical urls, but this applies only when the domain.com url does not redirect also should I use 301 or 302 code in the redirect ?

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• Loading files during run time

  - by NDraskovic

  I made a content pipeline extension (using this tutorial) in XNA 4.0 game. I altered some aspects, so it serves my need better, but the basic idea still applies. Now I want to go a step further and enable my game to be changed during run time. The file I am loading trough my content pipeline extension is very simple, it only contains decimal numbers, so I want to enable the user to change that file at will and reload it while the game is running (without recompiling as I had to do so far). This file is a very simplified version of level editor, meaning that it contains rows like: 1 1,5 1,78 -3,6 Here, the first number determines the object that will be drawn to the scene, and the other 3 numbers are coordinates where that object will be placed. So, how can I change the file that contains these numbers so that the game loads it and redraws the scene accordingly? Thanks

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• Good PHP BOOKS for starters!

  - by Goma

  I started reading some PHP books. Most of them in their introduction say that this book , unlike other books, it follows a good habits and practices. Now, I do not know which book tells the truth, and which writer is the most experienced in PHP. These are the books that I had a quick look to their first chapter: PHP and MySQL Web Development (Developer's Library) by Luke Welling and Laura Thomson. Build Your Own Database Driven Web Site Using PHP & MySQL by Kevin Yank. PHP and MySQL for Dummies by Janet Valade. Now, it's your time to advise me and tell me about the excellent one that follows best practices, please give an advice from your experience. (It could be any other book!). Regards,

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• Smart Grid Gateway and New Meter Data Management released

  - by Anthony Shorten

  Two products have just been released and are available from edlivery.oracle.com. Smart Grid Gateway 2.0.0 - A new product to integrate to Smart Grid networks Meter Data Management 2.0.1 - A new version of the Meter Data Management product. These products are the first products to use the brand new version of the Oracle Utilities Applicaton Framework (V4.1). The new framework builds up on FW2.2 and FW4.0.2 to add exciting new features (this is just a subset): Support for Database Vault Enhancements to Business Object Maintenance Batch Statistics Portal for benchmarking Custom template user exit support File permissions now consistent with other Oracle products Use of Universal Connection Pool for all database pool access Ability to manage the batch data cache Over the next few weeks I will be publishing articles and updates to existing whitepapers to highlight all the new features.

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• Project Euler 2: (Iron)Python

  - by Ben Griswold

  In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 2.  As always, any feedback is welcome. # Euler 2 # http://projecteuler.net/index.php?section=problems&id=2 # Find the sum of all the even-valued terms in the # Fibonacci sequence which do not exceed four million. # Each new term in the Fibonacci sequence is generated # by adding the previous two terms. By starting with 1 # and 2, the first 10 terms will be: # 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... # Find the sum of all the even-valued terms in the # sequence which do not exceed four million. import time start = time.time() total = 0 previous = 0 i = 1 while i <= 4000000: if i % 2 == 0: total +=i # variable swapping removes the need for a temp variable i, previous = previous, previous + i print total print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue')

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• Fun with Facets: Hipmunk UX useful facets that make me smile #search #endeca #UX #hipmunk

  - by ultan o'broin

  Just love the Hipmunk (for Business) UI facets for discovering information. You can filter by Agony, Spite, or Vice! Agony and Spite facets on Hipmunk.com Vice facet on Hipmunk for Mobile Seems like a reasonable balance given that all you can do with business travel sometimes is just laugh about it! I first came to hipmunk.com through a paper presented by Oracle Fusion User Experience Advocate (or FXA) Sten Vesterli (@stenvesterli) at an Oracle Usability Advisory Board meeting in Geneva earlier in 2012. Nice! And there are lots of other powerful and edgy UX features in the solution too (Gmail calendar integration, contextual actions dialog box, and so on). I'll be using Hipmunk as an example of great UX too, shortly. If you want to mention the funky side of UIs or anything referenced by me, then acknowledge the source.

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• Oneiric desktop looks seriously defect after updates

  - by Matthijs

  Probably a coincidence, but after applying the fix to How to get the proper LightDM theme? and running the latest batch of updates, my desktop suddenly looked like this after rebooting: Funny thing is, it seems to be account specific, as my girlfriend's account seems unaffected. I can't logout because the whole entry is missing on the top right. Rebooting doesn't solve the issue. System settings (when run from the launcher) lacks a whole lot of icons and changeing the theme doesn't solve the problem (only changes the window top bar). I'm going to try the solution in How do I fix my theme? first, but if that doesn't work (likely, since I seem to have a slightly bigger problem than the one in that question) I'd love something else to try (other than creating a new account).

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