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• My first encounter with SmartAssembly

  - by Peter Larsson

  Let me start by writing I am a supreme VB6 programmer, but I have very little experience with VB.Net, so I think I still need some more time learning SmartAssembly. SmartAssembly make obfuscating and merging dll files a piece of cake! With it's simple, straight forward and clean GUI I did make my tests work. With other obfuscators like Xenocode, Salamander etc which lets you (and in some cases forces you) control more advanced settings, you really have to know what you are doing. Especially when it comes to protecting code that uses external dependencies. My most annoying experience is that if you start checking radio buttons and activating different obfuscating features in SmartAssembly, you will end up breaking your working code as well, if you like me is not that experienced and don't know what you’re doing. SmartAssembly have some troubleshooting information on their website which explains why the application will fail in some scenarios. So why not extend these checks in some deeper analyzing stage on the dll's? By doing that I think more people could get fully functional dll's out of the box instead of trying different settings and then test the protected dll and see if it's working or not. //Peter

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• Smart defaults [SSDT]

  - by jamiet

  I’ve just discovered a new, somewhat hidden, feature in SSDT that I didn’t know about and figured it would be worth highlighting here because I’ll bet not many others know it either; the feature is called Smart Defaults. It gets around the problem of adding a NOT NULLable column to an existing table that has got data in it – previous to SSDT you would need to define a DEFAULT constraint however it does feel rather cumbersome to create an object purely for the purpose of pushing through a deployment – that’s the situation that Smart Defaults is meant to alleviate. The Smart Defaults option exists in the advanced section of a Publish Profile file: The description of the setting is “Automatically provides a default value when updating a table that contains data with a column that does not allow null values”, in other words checking that option will cause SSDT to insert an arbitrary default value into your newly created NON NULLable column. In case you’re wondering how it does it, here’s how: SSDT creates a DEFAULT CONSTRAINT at the same time as the column is created and then immediately removes that constraint: ALTER TABLE [dbo].[T1]    ADD [C1] INT NOT NULL,         CONSTRAINT [SD_T1_1df7a5f76cf44bb593506d05ff9a1e2b] DEFAULT 0 FOR [C1];ALTER TABLE [dbo].[T1] DROP CONSTRAINT [SD_T1_1df7a5f76cf44bb593506d05ff9a1e2b]; You can then update the value as appropriate in a Post-Deployment script. Pretty cool! On the downside, you can only specify this option for the whole project, not for an individual table or even an individual column – I’m not sure that I’d want to turn this on for an entire project as it could hide problems that a failed deployment would highlight, in other words smart defaults could be seen to be “papering over the cracks”. If you think that should be improved go and vote (and leave a comment) at [SSDT] Allow us to specify Smart defaults per table or even per column. @Jamiet

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• SQLAuthority News – Learning, Community and Book Signing at #SQLPASS 2012

  - by pinaldave

  SQLPASS event is going excellent we are having great great fun! We are having book signing events and the response is overwhelmingly positive. I am glad that all of you love our books and I totally appreciate your support. Rick and I both are feeling very motivated to write more books in future. Here is our schedule for book signing. SQL Queries 2012 Joes 2 Pros Volume1 Finally a book for the true SQL Server beginner! Whether you are brand new to databases and are thinking of getting your 70-461 certification or already a semi-pro working in the field and need some fingertip support, this is this is the book for you. Joes 2 Pros does not assume you already know anything about databases or SQL server.  This book builds on the success of the previous series and will help anyone transform themselves from a beginner “Joe” into a SQL 2012 “Pro”. Wednesday, November 7, 2012 12pm-1pm – Book Signing at Exhibit Hall Joes Pros booth#117 (FREE BOOK) Rest all the time – I will be at Exhibition Hall Joes 2 Pros Booth #117. Stop by for the goodies! This book is also available on Amazon. SQL 2012 Functions Joes 2 Pros Functions have been around for many years to make our lives easier. Because of them, thousands of lines of valuable programming can be done with one statement. When we know what functions are offered in SQL Server we can get powerful projects done very quickly. Often times, the functions you wished you had are released in the next version. Wednesday, November 7, 2012 7pm-8pm - Embarcadero Booth Book Signing (FREE BOOK) Thursday, November 8, 2012 12pm-1pm - Embarcadero Booth Book Signing (FREE BOOK) This book is also available on Amazon. If you are at SQLPASS stop by Booth #117 – I will be there and many be you can get one of my signed book! Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL PASS, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Book Review, SQLAuthority News, SQLServer, T SQL, Technology

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• high performance with xen, vmware or virtualbox

  - by Marchosius

  I was wondering which is the best method to go about if I want to play win based games. I do not want to go with the dual boot method as this will cost me time to restart, login and run a os to do my work or pass the time, and some of my apps rely on win and my graphics to run. for example Daz3d, Photoshop, Flash etc. Now I read about HVM(hardware virtual machines) and then I know about the 3D virtualisation of VMware and VirtualBox. How ever the 2 later virtualise the 3D not using the full power of the GPU. So this option wont perform perfect for latest games like D3. I was wondering if anyone have experience in HVM(like xen if i am not mistaken) and tried something similar to access the full power of the GPU and successfully run newer games and other products relying on the GPU? Will be the first time setting up a HVM, no experience in this so don't know what to expect. This will help a lot as I do not want to revert back to win or as mentioned do dual boot.

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• Unknown CSS font-family oddity with IE7-10 on Win Vista-8

  - by Jeff

  I am seeing the following "oddity" with IE7-10 on Win Vista-8: When declaring font-family: serif; I am seeing an old bitmapped serif font that I can't identify (see screenshot below) instead of the expected font Times New Roman. I know it's an old bitmapped font because it displays aliased, without any font smoothing, with IE7-10 on Win Vista-8 (just like Courier on every version of Win). Screenshot: I would like to know (1) can anyone else confirm my research and (2) BONUS: which font is IE displaying? Notes: IE6 and IE7 on Win XP displays Times New Roman, as they should. It doesn't matter if font-family: serif; is declared in an external stylesheet or inline on the element. Quoting the CSS attribute makes no difference. Adding "Unkown Font" to the stack also makes no difference. New Screenshot: The answer from Jukka below is correct. Here is a new screenshot with Batang (not BatangChe) to illustrate. Hope this helps someone.

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• Role of systems in entity systems architecture

  - by bio595

  I've been reading a lot about entity components and systems and have thought that the idea of an entity just being an ID is quite interesting. However I don't know how this completely works with the components aspect or the systems aspect. A component is just a data object managed by some relevant system. A collision system uses some BoundsComponent together with a spatial data structure to determine if collisions have happened. All good so far, but what if multiple systems need access to the same component? Where should the data live? An input system could modify an entities BoundsComponent, but the physics system(s) need access to the same component as does some rendering system. Also, how are entities constructed? One of the advantages I've read so much about is flexibility in entity construction. Are systems intrinsically tied to a component? If I want to introduce some new component, do I also have to introduce a new system or modify an existing one? Another thing that I've read often is that the 'type' of an entity is inferred by what components it has. If my entity is just an id how can I know that my robot entity needs to be moved or rendered and thus modified by some system? Sorry for the long post (or at least it seems so from my phone screen)!

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• What's the best approach to Facebook integration?

  - by Jay Stevens

  I have a new site/app going live next week (or somewhere close). I know there will be a relatively small (15,000?) very dedicated group of people on Facebook who will be very likely to be interested in the site, so I know I need Facebook integration of some kind. I won't be doing Facebook logins or pulling/posting to profiles yet, but I plan to... The question: Do I just do a Facebook "Page" for now? This is faster/easier to set up and seems a little less buggy.. and then migrate to a Facebook App later? or Do I create a "Facebook App" (with the api key/id/secret, etc.) now even if I'm doing nothing but using the "like" button. This means I don't have any migration later and I can use the javascript api to log "like" button clicks to Google Analytics, etc. Thoughts? Experiences? Is there a migration process to move your old Page users to your new "App"? What's the advantages / disadvantages of each.

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• Filtering GridViewComboBoxColumn in RadGridView for WPF

  The GridViewComboBox column is used to display lookup data in user friendly manner. For our demo we bind RadGridView for WPF to a collection of custom Location objects. As you may notice – each location has a selectable Country field.  Here is the underlying ‘data model’: public class Location {  public int CountryID { get; set; }  public string CityName { get; set; } } public class Country {  public int ID { get; set; }  public string Name { get; set; } }   The location object contains the integer CountryID. Each CountryID corresponds to a certain country and with the help of GridViewComboBoxColumn we see some human readable country names instead of the underlying numeric IDs. Now The Problem: Unfortunately the filter control does not know that our Country IDs are associated with Country objects, so it displays the ...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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• Lenovo Ideapad 205 and Ubuntu 12.04 LTS

  - by Oranges

  I just wanted to report one thing, because I know there are a lot of Ideapad S205 users out there, that had issues running Ubuntu on their Lenovo Ideapad S205 in the past. Lenovo Ideapad with Ubuntu 12.04 LTS: Everything works out of the box. I just installed it and everything, including the microphone, the webcam, the WLAN, the AMD E-350 CPU/GPU and the sound worked right away. In other words: Everything works. Even the AMD E-350 GPU works very well with the Open Source drivers and with the prop. drivers. The prop. drivers were automatically offered to me via Ubuntu itself. It works great. A long idea, written short: I love it. It's extremly stable and very fast. I am using the German version of the Idepad S205, combined with the 32bit version of Ubuntu. There is only one, single thing to keep in mind when installing Ubuntu on the S205: Plugin your USB/CD/DVD drive in the left USB-Port. I don't know why, but it only works with the USB-Port on the left side of the Netbook. This is only for installing Ubuntu. After it has been installed and updated successfully, all of the USB ports will work. Oranges - feedback on Lenovo S205 with Ubuntu 12.04 LTS.

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• How to fix no splash screen in Ubuntu after nvidia proprietary driver installation (also black borders)

  - by Fabio Trevisiol

  This is soultion how to fix no splash screen in Ubuntu after nvidia proprietary driver installation. It's no matter what Ubuntu version you use, it should work anyway. (TESTED ON 14.04) Open your terminal and type: sudo apt-get install v86d (TEST WITHOUT) Then: sudo gedit /etc/default/grub Find this line: #GRUB_GFXMODE=640x480 Add below (of course choose your resolution): GRUB_GFXMODE=1024x768x32 (TRY WITHOUT OR DIFFERENT BIT DEPTH) GRUB_GFXPAYLOAD_LINUX=1920x1080x32 (YOU CAN ALSO USE THE KEEP OPTION) Save file and type in terminal: echo FRAMEBUFFER=y | sudo tee /etc/initramfs-tools/conf.d/splash (ALLOWS TO AVOID THAT THE SPLASH SCREEN IS DISPLAYED FOR A FEW SECONDS) sudo update-initramfs -u sudo update-grub2 For all those who complain about the presence of black borders in "plymouth", try to make these changes before installing the nvidia driver or switch back from nvidia to nouveau and from nouveau to nvidia. Kernel update from the Software Updater? It happened to me; I don't know if it matters. I don't know for which of these reasons, but after a few reboots, the black borders are gone. UPDATE discovered the secret: during all these beautiful things, something strange happened. glxinfo | grep vendor server glx vendor string: SGI client glx vendor string: Mesa Project and SGI OpenGL vendor string: nouveau

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• displaying multi-section html documents - best practices

  - by ecpepper

  I work at a research organization and we publish a lot of large-ish documents, usually organized in sections. What I want to know is how best to present these multi-section documents on our website. Presently, what I do is load the entire document as a single page, with each section as its own div. Then I show and hide divs as needed via a table of contents and "next" and "prev" buttons. The advantages to this are mainly: 1) that you can move between sections very quickly, 2) it produces consistent analytics (when a page is loaded, I know a report is being read). The disadvantages, however, are real: Readers can't take advantage of browser back/forward buttons to move between sections. It's complicated to create direct links to individual sections (I can do it with javascript but it's not easy for other people to grab and share). For long reports, you have to wait for the full report to load before you can move around (and that can include hordes of images and charts). Do other people have thoughts on better ways to organize this? Here's an example of the current system: http://massbudget.org/825

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• From .psd to working HTML and CSS - help me suck less

  - by kevinmajor1

  I am not much of a designer. My strength lies in coding. That said, I'm often forced into the role of "The Man," responsible for all aspects of site creation. So, that said I'm wondering if the pros can give me tips/solutions/links to tutorials to my main questions. Resolution. What should I aim for? What are the lower and upper edges I should be aware of? I know that systems like 960 Grid were popular recently. Is that the number I should still aim for? Slicing up a .psd - are there any tricks I should know? I've always found it difficult to get my slices pixel perfect. I'm also really slow at it. I must be looking at it wrong, or missing something fundamental. The same goes for text. Layouts are always filled with the classic "Lorem...", but I can never seem to get real content to fit quite as well on the screen. The advanced (to me, anyway) looking things, like a part of a logo/image overlaying what looks like a content area. How does one do that? How do layouts change/are informed by the decision to go fixed or liquid? Again, any tips/tricks/suggestions/tutorials you can share would be greatly appreciated.

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• Bridging the gap between developers and testers with VS 2010

  - by Etienne Tremblay

  Hey everyone, I know it’s been an eternity since I blogged but I have so much to do that I unfortunately need to prioritize.  Vincent Grondin and I did a 7h presentation on the new developer and tester tools available in the VS 2010 suite.  It was a blast.  We did it in front of an audience (around 120) and it was taped.  We did it as a play and really didn’t look at the crowd at all we were training each other on the technology. It is now available for anyone that would like to watch it at this location: http://www.devteach.com/ALM-TFS2010-Bridgingthegap.aspx What we covered in the full day event was Migration to TFS 2010 (10h00) 1-Migration of VSS to TFS (20 min.) 2-Automating the Build (Something you can't do with VSS) ( 20 Min.) 3-User story (Real application context for this presentation) (20 min.) 10h00 Pause Manuel Tests by Dev ( 11h30) 4-Adding a tester to the team (Into to MTM) (20 min.) 5-Define tests (what is a white bug) (20 min.) 6-Fix the bug and show Intellitrace and Play back the test (20 min.) 12h15 Lunch Manuel testing for maintenance (13h30) 7- Implement new Feature (web service) and Identify bug with MTM and branch for a production fix and also add a new Build script (20 min.) 8- Fix bug in production branch, Playback tests, merge the change in main branch (20 min.) Manuel testing with the lab manager (14h30) 9- Intro to Lab manager and environment (20 min.) 10- Change build script to deploy to lab and test with web service in lab environment. (20 min.) 15h15 Pause Automate UI test with CodeUI (15h30) 11- Reducing the effort of testing the UI (20 min.) 12- Repeating testing to make sure the application is working properly (20 min.) 13- Automate Coded UI with the Lab environment (20 min.) 16h30 Conclusions As you can see lots of stuff!! Enjoy the show and let us know how you like it Cheers, ET Technorati Tags: VS 2010,Testing Tools,ALM,Training

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• Ask the Readers: Which Google Services Do You Use?

  - by Asian Angel

  Nearly everyone uses at least one of Google’s services while browsing each day. What we want to know this week is which Google services do you use? Image by adria.richards Google offers a multitude of services such as e-mail, calendar, and docs to help you manage your online life. Some of you may only use a few of the available services while others are power users. A fair number of businesses and schools have also switched over to Google apps and services for their organization. Whether it is at home, work, or both Google has become a part of our daily lives. Being able to access everything in one place can be extremely useful but equally frustrating if Google’s services experience any downtime. Another concern for some people is the issue of privacy over having so much information stored by a single company. Ultimately the final decision lies with you. Which Google services do you use at home or at work? Let us know in the comments! Similar Articles Productive Geek Tips Access Your Favorite Google Services in Chrome the Easy WayFinding RSS Subscriber Counts Through Apache LogsQuick and Easy Access to Your Favorite Google Services with GButtsAsk the Readers: Which Search Engine Do You Use?A Few Things I’ve Learned from Writing at How-To Geek TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Identify Fonts using WhatFontis.com Windows 7’s WordPad is Actually Good Greate Image Viewing and Management with Zoner Photo Studio Free Windows Media Player Plus! – Cool WMP Enhancer Get Your Team’s World Cup Schedule In Google Calendar Backup Drivers With Driver Magician

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• HTML5 game engine for a 2D or 2.5D RPG style "map walk"

  - by stargazer

  please help me to choose a HTML5 game engine or Javascript libraries I want to do the following in the game: when the game starts a part the huge map (full size of the map: about 7 screens) is shown. The map itself is completely designed in the editor mapeditor.org (or in some comparable editor - if you know a good alternative to mapeditor.org - let me know) and loaded at runtime or at design time. The game engine should support loading of isometric maps (well, in worst case only orthogonal maps will be sufficient) both "tile layer" and "object layer" from mapeditor.org should be supported. Scrolling/performance of this map should be fast enough. The map and the game should be either in 2D (orthogonal map) or in 2.5D (isometric map) The game engine should support movement of sprites with animation. Let say I have a sprite for "human" with animation sequences showing "walking" in 8 directions - it should be imported into game engine and should "walk" on the map without writing a lot of Javascript code. Automatic scrolling of the map the "human" nears the screen border. Collision detection, "solid" objects. The mapeditor.org supports properies on tiles. Let say I assign a "solid" property to some tiles in editor. It should be easy to check this "solid" property in the game engine and implement kind of "solid" behavior, so the animanted sprites do not walk through the walls. Collision detection - it should be easy to implement some custom functionality like "when sprite A is close to sprite B - call this function" Showing "dialogs" or popup windows on top of the map - should be easy to implement. Cross-browser audio support - (it is implemented quite well in construct 2 from scirra, so I'm looking for the comparable audio quality) The game itself is a king of RPG but without fighting scenes and without huge "inventory". The main character just walking on the map, discovers some things, there are dialogs and sounds. The functionality of this example from sprite.js http://batiste.dosimple.ch/sprite.js/tests/mapeditor/map_reader.html is very close to what I'm developing. But I'm not a Javascript guru (and a very lazy guy) and would like to write even less Javascript code as in the example...

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• Why is there never any controversy regarding the switch statement? [closed]

  - by Nick Rosencrantz

  We all know that the gotostatement should only be used on very rare occasions if at all. It has been discouraged to use the goto statement countless places countless times. But why it there never anything like that about the switch statement? I can understand the position that the switch statement should always be avoided since anything with switch can always be expressed by if...else... which is also more readable and the syntax of the switch statement if difficult to remember. Do you agree? What are the arguments in favor of keeping the 'switch` statement? It can also be difficult to use if what you're testing changes from say an integer to an object, then C++ or Java won't be able to perform the switch and neither C can perform switch on something like a struct or a union. And the technique of fall-through is so very rarely used that I wonder why it was never presented any regret of having switch at all? The only place I know where it is best practice is GUI code and even that switch is probably better coded in a more object-oriented way.

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• Insufficient permissions within Eclipse when installed via synaptic in Ubuntu 12.04

  - by Clayton

  I installed Eclipse via the Synaptic Package Manager on Ubuntu 12.04 Desktop (more details on footer). However, from within Eclipse, I lack sufficient permissions to perform upgrades on my package and add-ons. I'm a recovering Windows user, and while I have a couple of years Ubuntu experience, I am unfamiliar with the command-line and mainly interact through the packaged GUI. Specifically, I am trying to install the upgrade for Eclipse CVS Clientorg.eclipse.cvs.feature.group1.3.100.v20110520-0800-7B78FHl9VF7BD7KBM4GP9C I am tracking the varying installation advice on a similar question eclipse install: Gaurav Butola Basically, the most current upgrades are available directly from eclipse?... But at some point I remember reading that the latest version of eclipse had been designed for the previous LTS of Ubuntu - I don't know if that is still true. I have read about the vulnerabilities of Java 6, and so I have gone with Open Java 7 openjdk-amd64 (if that has any relevance to which Eclipse package and installation method I choose). But I'm not crazy about the idea of creating a gksudo link in the sidebar launcher. I don't know enough about chown to use it - if that's even appropriate (I don't want stray java escaping from Eclipse and connecting to SkyNet). Another possible solution that I foresee is modifying my user's group memberships/privileges on the file system as a whole. The only other information that I think might be relevant is that I notice that Synaptic installed all of the files into /usr/ instead of /opt/ like I have seen recommended. So should I be changing ownership, reinstalling using a non-Synaptic method, or what? Any advice is greatly appreciated. Ubuntu information Ubuntu 12.04 LTS Memory 2.9 GiB Processor AMD Sempron(tm) Processor LE-1300 Graphics VESA: XXXXXXX OS type 64-bit Eclipse Version: 3.7.2 Build id: I20110613-1736 Ubuntu Developers :/usr/share$ ls -h -l drwxr-xr-x 5 root root 4.0K Sep 13 08:43 eclipse Install paths: /. /usr /usr/share ...

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• How do I create a .deb file?

  - by JamesTheAwesomeDude

  Yes, I know that this question has been asked many times before, but none of the answers really helped. I'd like to package the Minecraft launcher (which has no proprietary code, AFAIK,) into a .deb file so that I can put it on a flash drive and share it with my friends. I have managed to install Minecraft it manually (put some files into /opt/minecraft, download an icon, and create a .desktop file in /usr/share/applications,) and I have made a shell script that completely automates the process, but it relies on wget to retrieve a few files, including the .desktop file. (It isn't a self-extracting archive, after all.) I'd like to be able to do this offline, as a lot of my friends have slow or no internet. (One of their internet lines was buried so shallowly that it actually got knocked out by the lawnmower.) I won't be loading it into a PPA or anything like that; I just want it to be a "formal" package that can be easily installed and uninstalled. (One thing that I would like is for sudo apt-get purge minecraft to also remove the .minecraft folder. It would also be nice to define the dependedcies as being able to accept OpenJDK or Sun's JVM.) Oh, just so you know, the Minecraft launcher is a .jar file, but I can very, very easily launch it via shell scripts. The exact command is right on the download page.

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• Microsoft C# Most Valuable Professional

  - by Robz / Fervent Coder

  Recently I was awarded the Microsoft Most Valuable Professional (MVP) for Visual C#. For those that don’t know it’s an annual award based on nominations from peers and Microsoft. Although there are just over 4,000 MVPs worldwide from all kinds of specializations, there are less than 100 C# MVPs in the US. There is more information at the site: https://mvp.support.microsoft.com The Microsoft MVP Award is an annual award that recognizes exceptional technology community leaders worldwide who actively share their high quality, real world expertise with users and Microsoft. With fewer than 5,000 awardees worldwide, Microsoft MVPs represent a highly select group of experts. MVPs share a deep commitment to community and a willingness to help others. To recognize the contributions they make, MVPs from around the world have the opportunity to meet Microsoft executives, network with peers, and position themselves as technical community leaders. Here is my profile: https://mvp.support.microsoft.com/default.aspx/profile/rob.reynolds I want to thank those that nominated me, without nominations this would never have happened. Thanks to Microsoft for liking me and finding my achievements and contributions to the community to be worth something. It’s good to know when you put in a lot of hard work that you get rewarded! I also want to thank many of the people I have worked with over the last 7 years. You guys have been great and I’m definitely standing on the shoulders of giants! Thanks to KDOT for giving me that first shot into professional programming and the experience and all of the training! A special thanks to @drusellers for kick starting me when I went stale in my learning back in 2007 and for always pushing me and bouncing ideas off of me. Without you I don’t think I would have made it this far. Thanks Alt.NET for keeping it fresh and funky! A very special thank you goes out to my wife for supporting me and locking me in the basement to work on all of my initiatives!

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• Linking Libraries in iOS?

  - by Joey Green

  This is probably a totally noob question but I have missing links in my mind when thinking about linking libraries in iOS. I usually just add a new library that's been cross compiled and set the build and linker paths without really know what I'm doing. I'm hoping someone can help me fill in some gaps. Let's take the OpenCV library for instance. I have this totally working btw because of a really well written tutorial( http://niw.at/articles/2009/03/14/using-opencv-on-iphone/en ), but I'm just wanting to know what is exactly going on. What I'm thinking is happening is that when I build OpenCV for iOS is that your creating object code that gets placed in the .a files. This object code is just the implementation files( .m ) compiled. One reason you would want to do this is to make it hard to see the source code and so that you don't have to compile that source code every time. The .h files won't be put in the library ( .a ). You include the .h in your source files and these header files communicate with the object code library ( .a ) in some way. You also have to include the header files for your library in the Build Path and the Library itself in the Linker Path. So, is the way I view linking libraries correct? If , not can someone correct me on this ?

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• Finding the normals of an oriented bounding box?

  - by Milo

  Here is my problem. I'm working on the physics for my 2D game. All objects are oriented bounding boxes (OBB) based on the separate axis theorem. In order to do collision resolution, I need to be able to get an object out out of the object it is penetrating. To do this I need to find the normal of the face(s) that the other OBB is touching. Example: The small red OBB is a car lets say, and the big OBB is a static building. I need to determine the unit vector that is the normal of the building edge(s) the car is penetrating to get the car out of there. Here are my questions: How do I determine which edges the car is penetrating. I know how to determine the normal of an edge, but how do I know if I need (-dy, dx) or (dy, -dx)? In the case I'm demonstrating the car is penetrating 2 edges, which edge(s) do I use to get it out? Answers or help with any or all of these is greatly appreciated. Thank you

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• Synaptics error "no touchpad found" at startup on HP laptop

  - by Sandra

  I know there are a lot of topics on the synaptics touchpad not working, but I can't seem to find the answer to my problem anywhere. Please forgive me if I missed it. Here is what happened. After using the "ambient light" F11 key on my HP laptop (Compaq nc8430), the touchpad was disabled and I couldn't get it to work. Then I found this thread : "Synaptic touchpad on laptop not working". And Salem's answer totally solved my problem, both for the session fix and for the permanent fix. But since then, after each reboot I get the same error pop-up, with the following content: No touchpad found. No touchpad was found in this system. If the system has a touchpad, please make sure that the synaptics driver is properly installed and configured. If your touchpad is not found, though the driver is installed and configured correctly, please compile detailed information about your touchpad hardware and report this issue to the issue tracker. Needless to say, the driver is indeed installed, activated and configured (even though it's kind of useless now, since I guess the .conf file I created is doing all the work). I know it's a minor issue, because the touchpad does work properly, but it's getting really annoying... So, could anyone please help me fix this error pop-up problem ? Thank you !

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• Please recommend a patterns book for iOS development

  - by Brett Ryan

  I've read several books on iOS development and Objective-C, however what a lot of them teach is how to work with interfaces and all contain the model inside the view controller, i.e. a UITableViewController based view will simply have an NSArray as it's model. I'm interested in what the best practices are for designing the structure of an application. Specifically I'm interested in best practices for the following: How to separate a model from the view controller. I think I know how to do this by simply replacing the NSArray style example with a specific model object, however what I do not know how to do is alert the view when the model changes. For example in .NET I would solve this by conforming to INotifyPropertyChanged and databinding, and similarly with Java I would use PropertyChangeListener. How to create a service model for my domain objects. For example I want to learn the best way to create a service for a hypothetical Widget object to manage an internal DB and also services for communicating with remote endpoints. I need to learn the best ways to do this in a way that interface components can subscribe to events such as widgetUpdated. These services should be singleton classes and some how dependency injected into model/controller objects. Books I've read so far are: Programming in Objective-C (4th Edition) Beginning iOS 5 Development: Exploring the iOS SDK The iOS 5 Developer's Cookbook: Expanded Electronic Edition: Essentials and Advanced Recipes for iOS Programmers Learn Objective-C on the Mac: For OS X and iOS I've also purchased the following updated books but not yet read them. The Core iOS 6 Developer's Cookbook (4th edition Programming in Objective-C (5th Edition) I come from a Java and C# background with 15 years experience, I understand that many of the ways I would do things in these languages may not fit to the ObjC way of developing applications. Any guidance on the topic is very much appreciated.

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• How best to handle ID3D11InputLayout in rendering code?

  - by JohnB

  I'm looking for an elegant way to handle input layouts in my directx11 code. The problem I have that I have an Effect class and a Element class. The effect class encapsulates shaders and similar settings, and the Element class contains something that can be drawn (3d model, lanscape etc) My drawing code sets the device shaders etc using the effect specified and then calls the draw function of the Element to draw the actual geometry contained in it. The problem is this - I need to create an D3D11InputLayout somewhere. This really belongs in the Element class as it's no business of the rest of the system how that element chooses to represent it's vertex layout. But in order to create the object the API requires the vertex shader bytecode for the vertex shader that will be used to draw the object. In directx9 it was easy, there was no dependency so my element could contain it's own input layout structures and set them without the effect being involved. But the Element shouldn't really have to know anything about the effect that it's being drawn with, that's just render settings, and the Element is there to provide geometry. So I don't really know where to store and how to select the InputLayout for each draw call. I mean, I've made something work but it seems very ugly. This makes me thing I've either missed something obvious, or else my design of having all the render settings in an Effect, the Geometry in an Element, and a 3rd party that draws it all is just flawed. Just wondering how anyone else handles their input layouts in directx11 in a elegant way?

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• Functional Languages that compile to Android's Dalvik VM?

  - by Berin Loritsch

  I have a software problem that fits the functional approach to programming, but the target market will be on the Android OS. I ask because there are functional languages that compile to Java's VM, but Dalvik bytecode != Java bytecode. Alternatively, do you know if the dx utility can intelligently convert the .class files generated from functional languages like Scala? Edit: In order to add a bit more helpfulness to the community, and also to help me choose better, can I refine the question a bit? Have you used any alternate languages with Dalvik? Which ones? What are some "gotchas" (problems) that I might run into? Is performance acceptable? By that, I mean the application still feels responsive to the user. I've never done mobile phone development, but I grew up on constrained devices and I'm under no illusion that there is a cost to using non-standard languages with the platform. I just need to know if the cost is such that I should shoe-horn my approach into default language (i.e. apply functional principles in the OOP language).

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