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• Upgrading Ubuntu hardy to Ruby 1.8.7

  - by Simone Carletti

  My server is running Ubuntu Hardy and Ruby 1.8.6 installed using aptitude. I'd like to upgrade to Ruby 1.8.7 but, unfortunately, the Ruby package includes Ruby 1.8.7 starting from Ubuntu Intrepid. I read a couple of tutorials about how to upgrade to Ruby 1.8.7 and I found at least 3 different way to accomplish this task: backports installation from source installation from source and multiple versions I'm a bit confused. How do you recommend to upgrade to Ruby 1.8.7 taking into consideration I don't need multiple Ruby versions on the same server? I'd like to cleanly replace the existing Ruby 1.8.6 with Ruby 1.8.7.

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• What is a good way to store tilemap data?

  - by Stephen Tierney

  I'm developing a 2D platformer with some uni friends. We've based it upon the XNA Platformer Starter Kit which uses .txt files to store the tile map. While this is simple it does not give us enough control and flexibility with level design. Some examples: for multiple layers of content multiple files are required, each object is fixed onto the grid, doesn't allow for rotation of objects, limited number of characters etc. So I'm doing some research into how to store the level data and map file. This concerns only the file system storage of the tile maps, not the data structure to be used by the game while it is running. The tile map is loaded into a 2D array, so this question is about which source to fill the array from. Reasoning for DB: From my perspective I see less redundancy of data using a database to store the tile data. Tiles in the same x,y position with the same characteristics can be reused from level to level. It seems like it would simple enough to write a method to retrieve all the tiles that are used in a particular level from the database. Reasoning for JSON/XML: Visually editable files, changes can be tracked via SVN a lot easier. But there is repeated content. Do either have any drawbacks (load times, access times, memory etc) compared to the other? And what is commonly used in the industry? Currently the file looks like this: .................... .................... .................... .................... .................... .................... .................... .........GGG........ .........###........ .................... ....GGG.......GGG... ....###.......###... .................... .1................X. #################### 1 - Player start point, X - Level Exit, . - Empty space, # - Platform, G - Gem

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• Multi MVC processing vs Single MVC process

  - by lordg

  I've worked fairly extensively with the MVC framework cakephp, however I'm finding that I would rather have my pages driven by the multiple MVC than by just one MVC. My reason is primarily to maintain an a more DRY principle. In CakePHP MVC: you call a URL which calls a single MVC, which then calls the layout. What I want is: you call a URL, it processes a layout, which then calls multiple MVC's per component/block of html on the page. When you compare JavaScript components, AJAX, and server side HTML rendering, it seems the most consistent method for building pages is through blocks of components or HTML views. That way, the view block could be situated either on the server or the client. This is technically my ONLY disagreement with the MVC model. Outside of this, IMHO MVC rocks! My question is: What other RAD frameworks follow the same principles as MVC but are driven rather by the View side of MVC? I've looked at Django and Ruby on Rails, yet they seems to be more Controller driven. Lift/Scala appears to be somewhat of a good fit, but i'm interested to see what others exist.

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• Using awstats with a round-robin DNS configuration

  - by Shaun

  I have a website with multiple web servers whose access is controlled via a round-robin DNS. We currently use Google Analytics for site traffic monitoring but were looking to move to awstats due to concerns of inaccuracy with Google Analytics and using third-party trackers in general. I have a little experience with awstats and I know it gets its information from parsing server logs. How would this work when you have multiple web servers logging independently to separate locations? Is this supported with awstats? Is there an alternative I could use to track traffic activity directly on my servers?

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• Task bar remains visible with "Auto-hide the task bar" checked in Windows 7.

  - by Corey

  It's about time that I figure this out. I can say with a pretty high confidence that I have experienced this issue in all consumer versions of Windows since XP. I keep "Auto-hide the task bar" checked to maximize screen real estate. Every once in a while, the task bar will refuse to hide while individual windows will continue to act as if that option is checked (by falling under the task bar). For years, I have fixed this by rebooting. Of course, I cannot predict the timing or frequency of the problem, so the process becomes burdensome. I want to know how this can be fixed without rebooting. It has affected my on multiple machines using multiple versions of Windows, so I cannot be the only one who is bothered by it. Can anyone help me solve this?

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• I Could Sure Use Some Windows Azure Code Samples…

  - by BuckWoody

  There are multiple ways to learn, and one of the most effective is with examples. You have multiple options with Windows Azure, including the Software Development Kit, the Windows Azure Training Kit and now another one…. the Microsoft All-In-One Code Framework,, a free, centralized code sample library driven by developers' real-world pains and needs. The goal is to provide customer-driven code samples for all Microsoft development technologies, and Windows Azure is included. Once you hit the site, you download an EXE that will create a web-app based installer for a Code Browser.   Once inside, you can configure where the samples store data and other settings, and then search for what you want.   You can also request a sample – if enough people ask, we do it. OneCode also partnered with gallery and Visual Studio team to develop this Sample Browser Visual Studio extension.  It’s an easy way for developers to find and download samples from within Visual Studio.  

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• What is the best backup solution for VMware Infrastructure system that hosts a wide variety of VMs?

  - by SBWorks

  In a situation where you are running: VMware Infrastructure 4.x with multiple hosts Over 150 VMs with a wide variety of operating systems (Linux in a half dozen distros, Solaris, every MS version, etc.) in multiple languages with almost every mix of installed software (luckily, no Exchange mail servers) Using an EMC fiber channel SAN The VWs that need need to be backed up use about 2 terabytes of data (total) The goal is to keep backups for about 3-months At this rough scale, what backup solutions have worked well for you? And, as an add-on question, did any of them have de-duplication that you thought was effective and useful?

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• Unable to cast transparent proxy to type &lt;type&gt;

  - by Rick Strahl

  This is not the first time I've run into this wonderful error while creating new AppDomains in .NET and then trying to load types and access them across App Domains. In almost all cases the problem I've run into with this error the problem comes from the two AppDomains involved loading different copies of the same type. Unless the types match exactly and come exactly from the same assembly the typecast will fail. The most common scenario is that the types are loaded from different assemblies - as unlikely as that sounds. An Example of Failure To give some context, I'm working on some old code in Html Help Builder that creates a new AppDomain in order to parse assembly information for documentation purposes. I create a new AppDomain in order to load up an assembly process it and then immediately unload it along with the AppDomain. The AppDomain allows for unloading that otherwise wouldn't be possible as well as isolating my code from the assembly that's being loaded. The process to accomplish this is fairly established and I use it for lots of applications that use add-in like functionality - basically anywhere where code needs to be isolated and have the ability to be unloaded. My pattern for this is: Create a new AppDomain Load a Factory Class into the AppDomain Use the Factory Class to load additional types from the remote domain Here's the relevant code from my TypeParserFactory that creates a domain and then loads a specific type - TypeParser - that is accessed cross-AppDomain in the parent domain:public class TypeParserFactory : System.MarshalByRefObject,IDisposable { …/// <summary> /// TypeParser Factory method that loads the TypeParser /// object into a new AppDomain so it can be unloaded. /// Creates AppDomain and creates type. /// </summary> /// <returns></returns> public TypeParser CreateTypeParser() { if (!CreateAppDomain(null)) return null; /// Create the instance inside of the new AppDomain /// Note: remote domain uses local EXE's AppBasePath!!! TypeParser parser = null; try { Assembly assembly = Assembly.GetExecutingAssembly(); string assemblyPath = Assembly.GetExecutingAssembly().Location; parser = (TypeParser) this.LocalAppDomain.CreateInstanceFrom(assemblyPath, typeof(TypeParser).FullName).Unwrap(); } catch (Exception ex) { this.ErrorMessage = ex.GetBaseException().Message; return null; } return parser; } private bool CreateAppDomain(string lcAppDomain) { if (lcAppDomain == null) lcAppDomain = "wwReflection" + Guid.NewGuid().ToString().GetHashCode().ToString("x"); AppDomainSetup setup = new AppDomainSetup(); // *** Point at current directory setup.ApplicationBase = AppDomain.CurrentDomain.BaseDirectory; //setup.PrivateBinPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "bin"); this.LocalAppDomain = AppDomain.CreateDomain(lcAppDomain,null,setup); // Need a custom resolver so we can load assembly from non current path AppDomain.CurrentDomain.AssemblyResolve += new ResolveEventHandler(CurrentDomain_AssemblyResolve); return true; } …} Note that the classes must be either [Serializable] (by value) or inherit from MarshalByRefObject in order to be accessible remotely. Here I need to call methods on the remote object so all classes are MarshalByRefObject. The specific problem code is the loading up a new type which points at an assembly that visible both in the current domain and the remote domain and then instantiates a type from it. This is the code in question:Assembly assembly = Assembly.GetExecutingAssembly(); string assemblyPath = Assembly.GetExecutingAssembly().Location; parser = (TypeParser) this.LocalAppDomain.CreateInstanceFrom(assemblyPath, typeof(TypeParser).FullName).Unwrap(); The last line of code is what blows up with the Unable to cast transparent proxy to type <type> error. Without the cast the code actually returns a TransparentProxy instance, but the cast is what blows up. In other words I AM in fact getting a TypeParser instance back but it can't be cast to the TypeParser type that is loaded in the current AppDomain. Finding the Problem To see what's going on I tried using the .NET 4.0 dynamic type on the result and lo and behold it worked with dynamic - the value returned is actually a TypeParser instance: Assembly assembly = Assembly.GetExecutingAssembly(); string assemblyPath = Assembly.GetExecutingAssembly().Location; object objparser = this.LocalAppDomain.CreateInstanceFrom(assemblyPath, typeof(TypeParser).FullName).Unwrap(); // dynamic works dynamic dynParser = objparser; string info = dynParser.GetVersionInfo(); // method call works // casting fails parser = (TypeParser)objparser; So clearly a TypeParser type is coming back, but nevertheless it's not the right one. Hmmm… mysterious.Another couple of tries reveal the problem however:// works dynamic dynParser = objparser; string info = dynParser.GetVersionInfo(); // method call works // c:\wwapps\wwhelp\wwReflection20.dll (Current Execution Folder) string info3 = typeof(TypeParser).Assembly.CodeBase; // c:\program files\vfp9\wwReflection20.dll (my COM client EXE's folder) string info4 = dynParser.GetType().Assembly.CodeBase; // fails parser = (TypeParser)objparser; As you can see the second value is coming from a totally different assembly. Note that this is even though I EXPLICITLY SPECIFIED an assembly path to load the assembly from! Instead .NET decided to load the assembly from the original ApplicationBase folder. Ouch! How I actually tracked this down was a little more tedious: I added a method like this to both the factory and the instance types and then compared notes:public string GetVersionInfo() { return ".NET Version: " + Environment.Version.ToString() + "\r\n" + "wwReflection Assembly: " + typeof(TypeParserFactory).Assembly.CodeBase.Replace("file:///", "").Replace("/", "\\") + "\r\n" + "Assembly Cur Dir: " + Directory.GetCurrentDirectory() + "\r\n" + "ApplicationBase: " + AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "\r\n" + "App Domain: " + AppDomain.CurrentDomain.FriendlyName + "\r\n"; } For the factory I got: .NET Version: 4.0.30319.239wwReflection Assembly: c:\wwapps\wwhelp\bin\wwreflection20.dllAssembly Cur Dir: c:\wwapps\wwhelpApplicationBase: C:\Programs\vfp9\App Domain: wwReflection534cfa1f For the instance type I got: .NET Version: 4.0.30319.239wwReflection Assembly: C:\\Programs\\vfp9\wwreflection20.dllAssembly Cur Dir: c:\\wwapps\\wwhelpApplicationBase: C:\\Programs\\vfp9\App Domain: wwDotNetBridge_56006605 which clearly shows the problem. You can see that both are loading from different appDomains but the each is loading the assembly from a different location. Probably a better solution yet (for ANY kind of assembly loading problem) is to use the .NET Fusion Log Viewer to trace assembly loads.The Fusion viewer will show a load trace for each assembly loaded and where it's looking to find it. Here's what the viewer looks like: The last trace above that I found for the second wwReflection20 load (the one that is wonky) looks like this:*** Assembly Binder Log Entry (1/13/2012 @ 3:06:49 AM) *** The operation was successful. Bind result: hr = 0x0. The operation completed successfully. Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\V4.0.30319\clr.dll Running under executable c:\programs\vfp9\vfp9.exe --- A detailed error log follows. === Pre-bind state information === LOG: User = Ras\ricks LOG: DisplayName = wwReflection20, Version=4.61.0.0, Culture=neutral, PublicKeyToken=null (Fully-specified) LOG: Appbase = file:///C:/Programs/vfp9/ LOG: Initial PrivatePath = NULL LOG: Dynamic Base = NULL LOG: Cache Base = NULL LOG: AppName = vfp9.exe Calling assembly : (Unknown). === LOG: This bind starts in default load context. LOG: Using application configuration file: C:\Programs\vfp9\vfp9.exe.Config LOG: Using host configuration file: LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\V4.0.30319\config\machine.config. LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind). LOG: Attempting download of new URL file:///C:/Programs/vfp9/wwReflection20.DLL. LOG: Assembly download was successful. Attempting setup of file: C:\Programs\vfp9\wwReflection20.dll LOG: Entering run-from-source setup phase. LOG: Assembly Name is: wwReflection20, Version=4.61.0.0, Culture=neutral, PublicKeyToken=null LOG: Binding succeeds. Returns assembly from C:\Programs\vfp9\wwReflection20.dll. LOG: Assembly is loaded in default load context. WRN: The same assembly was loaded into multiple contexts of an application domain: WRN: Context: Default | Domain ID: 2 | Assembly Name: wwReflection20, Version=4.61.0.0, Culture=neutral, PublicKeyToken=null WRN: Context: LoadFrom | Domain ID: 2 | Assembly Name: wwReflection20, Version=4.61.0.0, Culture=neutral, PublicKeyToken=null WRN: This might lead to runtime failures. WRN: It is recommended to inspect your application on whether this is intentional or not. WRN: See whitepaper http://go.microsoft.com/fwlink/?LinkId=109270 for more information and common solutions to this issue. Notice that the fusion log clearly shows that the .NET loader makes no attempt to even load the assembly from the path I explicitly specified. Remember your Assembly Locations As mentioned earlier all failures I've seen like this ultimately resulted from different versions of the same type being available in the two AppDomains. At first sight that seems ridiculous - how could the types be different and why would you have multiple assemblies - but there are actually a number of scenarios where it's quite possible to have multiple copies of the same assembly floating around in multiple places. If you're hosting different environments (like hosting the Razor Engine, or ASP.NET Runtime for example) it's common to create a private BIN folder and it's important to make sure that there's no overlap of assemblies. In my case of Html Help Builder the problem started because I'm using COM interop to access the .NET assembly and the above code. COM Interop has very specific requirements on where assemblies can be found and because I was mucking around with the loader code today, I ended up moving assemblies around to a new location for explicit loading. The explicit load works in the main AppDomain, but failed in the remote domain as I showed. The solution here was simple enough: Delete the extraneous assembly which was left around by accident. Not a common problem, but one that when it bites is pretty nasty to figure out because it seems so unlikely that types wouldn't match. I know I've run into this a few times and writing this down hopefully will make me remember in the future rather than poking around again for an hour trying to debug the issue as I did today. Hopefully it'll save some of you some time as well in the future.© Rick Strahl, West Wind Technologies, 2005-2012Posted in .NET  COM   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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• How to stop a infinite running process(ztail) started by a ssh session after that session is closed

  - by Sanath Adiga

  I have a peculiar problem. My server supports multiple ssh session simultaneously, so that multiple admins can manage it simultaneously. We have a command which calls ztail to show the compressed log files and when the current ssh session is closed (without pressing ctrlc, to stop the tail command), the command should ideally stop working. But what I observed when I start a new ssh session is that the process ztail is still running in the background and consuming CPU, even though the previous session was closed. How can I determine when the session is closed, so that I can use that variable/flag to close/stop any commands initiated by that previously closed session?

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• Plugging GlusterFS and Openfiler together

  - by lpfavreau

  Has anyone had experience plugging GlusterFS and Openfiler together or something similar? Here is the motivation: Disk space on multiple server regrouped using GlusterFS Centralized access using LDAP/AD and quota management using Openfiler as the GlusterFS client SMB/CIFS server for easy sharing to multiple users on Mac and Windows I know I can have Gluster installed on Openfiler (rPath Linux) successfully but Openfiler seems to be very picky on what it can use as a shared drive. Mounting the Gluster volume inside an existing share does not seem to allow quotas with the mounted folder free space. If this is not possible, is there any alternative to give the same capabilities?

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• Solr Autosuggest

  - by rahul

  Hi, I am using Solr (1.4) AutoSuggest feature using termsComponent. Currently, if I type 'goo' means, Solr suggest words like 'google'. But I would like to receive suggestions like 'google, google alerts, ..' . ie, suggestions with single and multiple terms. Not sure, whether I need to use edgengrams for that. for eg, indexing google like 'go', 'oo', 'og', ... . But I think I don't need this, Since I don't want partial search. Please let me know if there is any way to do multiple word suggestions . Thanks in Advance.

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• Round robin DNS for dynamic website

  - by Uwe

  We want to setup multiple servers hosting the same site. Each server (iis6 or iis7) is on its own. Meaning it does not sjare any information with the others. They are not even in the same country. The problem we encounter is that if we setup a round-robin DNS (multiple IDs under one Domainname) is that the client (browser) switches the servers so that the asp.net session gets lost. The question is how do we set this up, so the clients are randomly send to one of the servers and if one fails the users go to the next one. But if a user is using one of the it should stay there. Thank you!

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• Why does modx-based site start using different domains for some content?

  - by naxa

  situation I have a modx site on a VPS with multiple domain and subdomain names. The modx site should use what I call the 'primary' domain name's 'primary' subdomain, ie www.intendedname.tld . The problem is that as time pass, the site mysteriously starts using another subdomain for links to content like videos, images, and even pages and (internal) links. The other subdomains doesn't serve this content of course. If I clear the modx cache, the original state is restored. However, the problem comes back again later. The VPS has a domain registered and multiple A records pointing to the VPS's IP, as subdomains. There is the 'primary' whan which is intended to be used as the public content server, the other ones are like docs. and test., etc. On top of that, I have dynamic-dns service client installed from no-ip on the machine and a dynamic domain-name bound. It gives a completely different domain name. I originally used it for ssh login and to serve a completely different site. An nginx server is put into good use to do rewrite the different subdomains to the right places. edit The modx templates use Templates use <base href="[[++site_url]]" />. current attempt to fix The current 'solution' to the problem is to also use the rewrite to rewrite everything to the 'primary' domain and subdomain. In the nginx config file for the site, it utilizes (unsurprisingly) the rewrite directive to rewrite the unexpected server_name entries (ie. the other subdomains) in a server block dedicated to this task. So with this, the main site basically works (sort of) but this renders all the other functions (docs) useless. Before this rewrite was set, the 'solution' was to clear the modx cache on a regular basis. The original modx content is not getting corrupted, only the files in cache are. What can I do to find out what actual the problem is and fix it?

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• ORAchk 2.2.5 – New Tool Features & New Health Checks for the Oracle Stack

  - by SamanthaF-Oracle

  ORAchk version 2.2.5 is now available for download, new features in 2.2.5: Running checks for multiple databases in parallel Ability to schedule multiple automated runs via ORAchk daemon New "scratch area" for ORAchk temporary files moved from /tmp to a configurable $HOME directory location System health score calculation now ignores skipped checks Checks the health of pluggable databases using OS authentication New report section to report top 10 time consuming checks to be used for optimizing runtime in the future More readable report output for clusterwide checks Includes over 50 new Health Checks for the Oracle Stack Provides a single dashboard to view collections across your entire enterprise using the Collection Manager, now pre-bundled Expands coverage of pre and post upgrade checks to include standalone databases, with new profile options to run only these checks Expands to additional product areas in E-Business Suite of Workflow & Oracle Purchasing and in Enterprise Manager Cloud Control ORAchk has replaced the popular RACcheck tool, extending the coverage based on prioritization of top issues reported by users, to proactively scan for known problems within the area of: Oracle Database Standalone Database Grid Infrastructure & RAC Maximum Availability Architecture (MAA) Validation Upgrade Readiness Validation Golden Gate Enterprise Manager Cloud Control Repository E-Business Suite Oracle Payables (R12 only) Oracle Workflow Oracle Purchasing (R12 only) Oracle Sun Systems Oracle Solaris ORAchk features: Proactively scans for the most impactful problems across the various layers of your stack Streamlines how to investigate and analyze which known issues present a risk to you Executes lightweight checks in your environment, providing immediate results with no configuration data sent to Oracle Local reporting capability showing specific problems and their resolutions Ability to configure email notifications when problems are detected Provides a single dashboard to view collections across your entire enterprise using the Collection Manager ORAchk will expand in the future with high impact checks in existing and additional product areas. If you have particular checks or product areas you would like to see covered, please post suggestions in the ORAchk subspace in My Oracle Support Community. For more details about ORAchk see Document 1268927.2

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• Box.com file sharing - How are you managing concurrent document access and file locks? [closed]

  - by Matt

  My company is evaluating Box.com as a file server replacement. It's file locking behavior for concurrent access to files seems incomplete. Specifically, files are not locked* (either exclusive or read-only) when they are being edited by Office or similar programs. This inevitably results in multiple versions of documents as concurrent access results in change conflicts. *The exception is when the file is edited using Zoho Docs - perhaps other web-based office suites as well. Box provides multiple options for editing documents, including Google Docs, a local copy of Office or similar, Zoho Docs and others. If you are using Box how have you managed or worked around this behavior?

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• Connect to localdb using Sql Server management studio

  - by Magnus Karlsson

  I was trying to find my databse for local db under localhost etc but no luck. The following led me to just connect to it, kind of obvious really when you look at your connections string but.. its sunday morning or something.. From: http://blogs.msdn.com/b/sqlexpress/archive/2011/07/12/introducing-localdb-a-better-sql-express.aspx High-Level Overview After the lengthy introduction it's time to take a look at LocalDB from the technical side. At a very high level, LocalDB has the following key properties: LocalDB uses the same sqlservr.exe as the regular SQL Express and other editions of SQL Server. The application is using the same client-side providers (ADO.NET, ODBC, PDO and others) to connect to it and operates on data using the same T-SQL language as provided by SQL Express. LocalDB is installed once on a machine (per major SQL Server version). Multiple applications can start multiple LocalDB processes, but they are all started from the same sqlservr.exe executable file from the same disk location. LocalDB doesn't create any database services; LocalDB processes are started and stopped automatically when needed. The application is just connecting to "Data Source=(localdb)\v11.0" and LocalDB process is started as a child process of the application. A few minutes after the last connection to this process is closed the process shuts down. LocalDB connections support AttachDbFileName property, which allows developers to specify a database file location. LocalDB will attach the specified database file and the connection will be made to it.

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• Buy iPads In India From eZone, Reliance iStores [Chennai, Bangalore, Delhi, Mumbai]

  - by Gopinath

  Close to an year wait for Apple iPad in India is over. Now everyone can buy a genuine iPad with manufacturers’ warranty from dozens of retail outlets set up by Future Bazar’s eZone and Reliance iStore. This puts an end to the grey market that was importing iPads through illegal channels, selling them at staggering high prices and with no warranty. iPad Retail Price at eZone & Outlet Address The iPad page on eZone’s website has price details of various models and they range from Rs.27,900/- to Rs.44,000/-. iPad 16 GB WiFi  – Rs. 27900.00 iPad 32 GB WiFi  – Rs. 32900.00 iPad 64 GB WiFi  – Rs. 37900.00 iPad 16 GB WiFi  + 3G – Rs. 34900.00 iPad 32 GB WiFi  + 3G – Rs. 39900.00 iPad 64 GB WiFi  + 3G – Rs. 44900.00 Here is the list of eZone stores selling iPads Chennai Stores eZone :: CHENNAI-GANDHI SQUARE Gandhi Square, ( G2),No. 46, Old Mahabalipuram Road, Kandanchavadi, Chennai ( Before Lifeline Hospital) – 600096. Phone : 24967771/7 eZone :: CHENNAI-MYLAPORE Grand Terrace, Old no. 94, new door no. 162, Luz Church Road, Mylapore, Chennai – . Tamil Nadu. Phone : 24987867/68. Mumbai Stores eZone :: MUMBAI-GOREGAON Shop No-S-23, 2nd Floor, Oberoi Mall Off Western Express Highway , Goregaon(E) , Mumbai – 400063, Phone: 28410011/40214771. eZone :: MUMBAI-POWAI-HAIKO MALL Hailko Mall, Level 2, Central Avenue, Hiranandani Garden, Powai, Mumbai, 400076. Phone: 25717355/56. eZone :: EZ-Sobo Central C wing,SOBO Central, Next to Tardoe AC Market, Pandit Madan Mohan Malviya Road, Mumbai – 400034. Phone : 022-30089344. Bangalore Stores eZone :: Koramangala (Bnglr) Regent Insignia, Ground Floor,# 414, 100 Ft Road, Koramangala, Bangalore – 560034 Phone : 080-25520241/242/243. eZone :: BANGALORE-INDIRA NAGAR No.62, Asha Pearl,100 Feet Road, Opp.AXIS Bank.Indiranagar, Bangalore – 560038 Phone : 25216857/6855/6856. eZone :: BANGALORE-PASADENA pasadena’ (Ground floor),18/1.(old number 125/a),10th main,Ashoka pillar road,Jaynagar 1st block,Bangalore – 560 011. Phone : 26577527. Delhi Stores eZone :: NEW DELHI-PUSA ROAD Ground/Lower Ground Floor, Plot # 26, Pusa Road, Adjacent to Karol Bagh Metro Station, Karol Bagh, New Delhi – 110005. Phone :28757040/41. For more details check eZone iPad Product Page iPads at Reliance iStore Reliance iStores are exclusive outlets for selling Apple products in India. All the models of iPad are available at Reliance iStore and the price details are not available on their websites. You may walk into any of the iStore close by your locality or call them to get the details. To locate the stores close by your locality please check store locator page on iStore Website. Do you know any other retail stores selling iPads in India? This article titled,Buy iPads In India From eZone, Reliance iStores [Chennai, Bangalore, Delhi, Mumbai], was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• 2D Tile Map files for Platformer, JSON or DB?

  - by Stephen Tierney

  I'm developing a 2D platformer with some uni friends. We've based it upon the XNA Platformer Starter Kit which uses .txt files to store the tile map. While this is simple it does not give us enough control and flexibility with level design. Some examples: for multiple layers of content multiple files are required, each object is fixed onto the grid, doesn't allow for rotation of objects, limited number of characters etc. So I'm doing some research into how to store the level data and map file. Reasoning for DB: From my perspective I see less redundancy of data using a database to store the tile data. Tiles in the same x,y position with the same characteristics can be reused from level to level. It seems like it would simple enough to write a method to retrieve all the tiles that are used in a particular level from the database. Reasoning for JSON: Visually editable files, changes can be tracked via SVN a lot easier. But there is repeated content. Do either have any drawbacks (load times, access times, memory etc) compared to the other? And what is commonly used in the industry? Currently the file looks like this: .................... .................... .................... .................... .................... .................... .................... .........GGG........ .........###........ .................... ....GGG.......GGG... ....###.......###... .................... .1................X. #################### 1 - Player start point, X - Level Exit, . - Empty space, # - Platform, G - Gem

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• Managing JS and CSS for a static HTML web application

  - by Josh Kelley

  I'm working on a smallish web application that uses a little bit of static HTML and relies on JavaScript to load the application data as JSON and dynamically create the web page elements from that. First question: Is this a fundamentally bad idea? I'm unclear on how many web sites and web applications completely dispense with server-side generation of HTML. (There are obvious disadvantages of JS-only web apps in the areas of graceful degradation / progressive enhancement and being search engine friendly, but I don't believe that these are an issue for this particular app.) Second question: What's the best way to manage the static HTML, JS, and CSS? For my "development build," I'd like non-minified third-party code, multiple JS and CSS files for easier organization, etc. For the "release build," everything should be minified, concatenated together, etc. If I was doing server-side generation of HTML, it'd be easy to have my web framework generate different development versus release HTML that includes multiple verbose versus concatenated minified code. But given that I'm only doing any static HTML, what's the best way to manage this? (I realize I could hack something together with ERB or Perl, but I'm wondering if there are any standard solutions.) In particular, since I'm not doing any server-side HTML generation, is there an easy, semi-standard way of setting up my static HTML so that it contains code like <script src="js/vendors/jquery.js"></script> <script src="js/class_a.js"></script> <script src="js/class_b.js"></script> <script src="js/main.js"></script> at development time and <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script> <script src="js/entire_app.min.js"></script> for release?

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• Can you have more than one ~/.ssh/config file?

  - by DrewVS

  We have a bastion server that we use to connect to multiple hosts, and our .ssh/config has grown to over a thousand lines (we have hundreds of hosts that we connect to). This is beginning to get a little unwieldy and I'd like to know if there is a way to break the .ssh/config file up into multiple files. Ideally, we'd specify somewhere that other files would be treated as an .ssh/config file, possibly like: ~/.ssh/config ~/.ssh/config_1 ~/.ssh/config_2 ~/.ssh/config_3 ... I have read the documentation on ssh/config, and I don't see that this is possible. But maybe someone else has had a similar issue and has found a solution.

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• Which data structure should I use for dynamically generated platforms?

  - by Joey Green

  I'm creating a platform type of game with various types of platforms. Platforms that move, shake, rotate, etc. Multiple types and multiple of each type can be on the screen at once. The platforms will be procedural generated. I'm trying to figure out which of the following would be a better platform system: Pre-allocate all platforms when the scene loads, storing each platform type into different platform type arrays( i.e. regPlatformArray ), and just getting one when I need one. The other option is to allocate and load what I need when my code needs it. The problem with 1 is keeping up with the indices that are in use on screen and which aren't. The problem with 2 is I'm having a hard time wrapping my head around how I would store these platforms so that I can call the update/draw methods on them and managing that data structure that holds them. The data structure would constantly be growing and shrinking. It seems there could be too much complexity. I'm using the cocos2d iPhone game engine. Anyways, which option would be best or is there a better option?

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• Oracle Buys Compendium - Adds Leading Content Marketing Platform to Oracle Eloqua Marketing Cloud

  - by Richard Lefebvre

  News Facts Oracle today announced that it has acquired Compendium, a cloud-based content marketing provider that helps companies plan, produce and deliver engaging content across multiple channels throughout their customers’ lifecycle. Compendium’s data-driven approach aligns relevant content with customer data and profiles to help companies more effectively attract prospects, engage buyers, accelerate conversion of prospects to opportunities, increase adoption, and drive revenue growth. Compendium’s innovative solution complements Oracle’s industry leading Eloqua Marketing Cloud which is a part of Oracle’s comprehensive Customer Experience solution. The combination of Oracle Eloqua Marketing Cloud with Compendium is expected to enable modern marketers to align persona-based content to customers’ digital body language to increase “top-of-funnel” customer engagement, improve the quality of sales leads, realize the highest return on their marketing investment, and increase customer loyalty. More information on this announcement can be found at http://www.oracle.com/compendium. Supporting Quotes “As customers increasingly access information through online and mobile channels, the buying process is shifting from sales-driven to marketing-driven. Now, more than ever, marketers are challenged to deliver relevant and engaging content across multiple channels and throughout the customer lifecycle,” said Thomas Kurian, Executive Vice President, Oracle Development. “By adding Compendium’s content marketing platform to Oracle Eloqua Marketing Cloud, customers will be able to capture more prospects, improve the customer experience and drive top line revenue.” “Oracle Eloqua Marketing Cloud is uniquely positioned to capture a prospect’s digital body language to help companies know each buyer’s demographics, behaviors and influencers,” said Chris Baggott, Compendium CEO. “By combining this buyer profile with Compendium’s data-driven content marketing platform, marketers will be able to deliver the right content, to the right individual across the right channel at the right time. We are very excited to now be a part of the industry’s most complete marketing cloud solution, giving us a global stage to deliver innovative content marketing solutions.” Supporting Resources About Oracle and Compendium General Presentation Customer and Partner Letter FAQ

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• Cloud Computing and Data Utilization

  - by Ahsan Alam

  Someone recently asked me “is cloud computing going to change the way we perceive data?”. My first instinct was “off course”; but I restrained myself and thought for a moment. Then my answer was “no”. Why do I feel that way? Technology and business have evolved quite a bit in the past few decades; however, the need to effectively view and utilize data hasn't changed. It is not uncommon to see many organization to rely on multiple database management systems (DBMS). Applications and systems are often built to utilize information from all these data sources, and effectively present them to users. In addition to multiple DBMS, corporations are also housing their systems across numerous data centers. In fact, systems and data can reside anywhere around the world with the advent of globalization. Cloud based systems have simply provided us a different place to maintain our data, nothing more. Hosting costs, security and accessibility are different issues; however, the way we utilize and view these data remains the same.

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• C# XNA: Effecient mesh building algorithm for voxel based terrain ("top" outside layer only, non-destructible)

  - by Tim Hatch

  To put this bluntly, for non-destructible/non-constructible voxel style terrain, are generated meshes handled much better than instancing? Is there another method to achieve millions of visible quad faces per scene with ease? If generated meshes per chunk is the way to go, what kind of algorithm might I want to use based on only EVER needing the outer layer rendered? I'm using 3D Perlin Noise for terrain generation (for overhangs/caves/etc). The layout is fantastic, but even for around 20k visible faces, it's quite slow using instancing (whether it's one big draw call or multiple smaller chunks). I've simplified it to the point of removing non-visible cubes and only having the top faces of my cube-like terrain be rendered, but with 20k quad instances, it's still pretty sluggish (30fps on my machine). My goal is for the world to be made using quite small cubes. Where multiple games (IE: Minecraft) have the player 1x1 cube in width/length and 2 high, I'm shooting for 6x6 width/length and 9 high. With a lot of advantages as far as gameplay goes, it also means I could quite easily have a single scene with millions of truly visible quads. So, I have been trying to look into changing my method from instancing to mesh generation on a chunk by chunk basis. Do video cards handle this type of processing better than separate quads/cubes through instancing? What kind of existing algorithms should I be looking into? I've seen references to marching cubes a few times now, but I haven't spent much time investigating it since I don't know if it's the better route for my situation or not. I'm also starting to doubt my need of using 3D Perlin noise for terrain generation since I won't want the kind of depth it would seem best at. I just like the idea of overhangs and occasional cave-like structures, but could find no better 'surface only' algorithms to cover that. If anyone has any better suggestions there, feel free to throw them at me too. Thanks, Mythics

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• Select tool to minimize JavaScript and CSS size

  - by Michael Freidgeim

  There are multiple ways and techniques how to combine and minify JS and CSS files.The good number of links can be found in http://stackoverflow.com/questions/882937/asp-net-script-and-css-compression and in http://www.hanselman.com/blog/TheImportanceAndEaseOfMinifyingYourCSSAndJavaScriptAndOptimizingPNGsForYourBlogOrWebsite.aspx There are 2 major approaches- do it during build or at run-time.In our application there are multiple user-controls, each of them required different JS or CSS files, and they loaded dynamically in the different combinations. We decided that loading all JS or CSS files for each page is not a good idea, but for each page we need to load different set of files.Based on this combining files on the build stage does not looks feasible.After Reviewing  different links I’ve decided that squishit should fit to our needs. http://www.codethinked.com/squishit-the-friendly-aspnet-javascript-and-css-squisherDifferent limitations of using SquishIt.We had some browser specific CSS files, that loaded conditionally depending of browser type(i.e IE and all other browsers). We had to put them in separate bundles,For Resources and AXD files we decide to use HttpModule and HttpHandler created by Mads KristensenTo GZIP html we are using wwWebUtils.GZipEncodePage() http://www.west-wind.com/weblog/posts/2007/Feb/05/More-on-GZip-compression-with-ASPNET-Content Just swap the order of which encoding you apply to start by asking for deflate support and then GZip afterwards.Additional tips about SquishIt.Use CDN: https://groups.google.com/group/squishit/browse_thread/thread/99f3b61444da9ad1Support intellisense and generate bundle in codebehind http://tech.kipusoep.nl/2010/07/23/umbraco-45-visual-studio-2010-dotless-jquery-vsdoc-squishit-masterpages/Links about other Libraries that were consideredA few links from http://stackoverflow.com/questions/5288656/which-one-has-better-minification-between-squishit-and-combres2.Net 4.5 will have out-of-the-box tools for JS/CSS combining.http://weblogs.asp.net/scottgu/archive/2011/11/27/new-bundling-and-minification-support-asp-net-4-5-series.aspx . It suggests default bundle of subfolder, but also seems supporting similar to squishit explicitly specified files.http://www.codeproject.com/KB/aspnet/combres2.aspx  config XML file can specify expiry etchttps://github.com/andrewdavey/cassette http://stackoverflow.com/questions/7026029/alternatives-to-cassetteDynamically loaded JS files requireJS http://requirejs.org/docs/start.html  http://www.west-wind.com/weblog/posts/2008/Jul/07/Inclusion-of-JavaScript-FilesPack and minimize your JavaScript code sizeYUI Compressor (from Yahoo)JSMin (by Douglas Crockford)ShrinkSafe (from Dojo library)Packer (by Dean Edwards)RadScriptManager  & RadStyleSheetManager -fromTeleric(not free)Tools to optimize performance:PageSpeed tools family http://code.google.com/intl/ru/speed/page-speed/download.htmlv

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