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  • SQL SERVER – Two Puzzles – Answer and Win USD 25 Gift Card

    - by pinaldave
    Today I have two simple T-SQL Puzzle. You can answer them and win USD 25 Gift card. The gift card will be sent in email to winner. You will get choice of Gift Card brand based on your preference and country location. Puzzle 1: What will be the outcome and why? DECLARE @x REAL; SET @x = 9E-40 SELECT @x; The outcome here is obvious as I have used negative number in assignment. What is the reason behind the same? Puzzle 2: Why will be the outcome different from Puzzle 1: DECLARE @y REAL; SET @y = 9E+40 SELECT @y; The outcome of this puzzle very different from puzzle 1  as I have used positive number. There is number six (6) in the resultset why? Msg 232, Level 16, State 2, Line 2 Arithmetic overflow error for type real, value = 90000000000000006000000000000000000000000.000000. How to participate To win the Gift Card USD 25 you will have to answer both of the question on my Facebook page. If you are on twitter – you can increase the chance of winning by tweeting your participation. This contest is open for any one from any country. The winner will be selected Randomly. Winner will be announced on July 7, 2011. Related Post: SQLAuthority News – Monthly list of Puzzles and Solutions on SQLAuthority.com Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Puzzle, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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  • TDD/Tests too much an overhead/maintenance burden?

    - by MeshMan
    So you've heard it many times from those who do not truly understand the values of testing. Just to start things out, I'm a follower of Agile and Testing... I recently had a discussion about performing TDD on a product re-write where the current team does not practice unit testing on any level, and probably have never heard of the dependency injection technique or test patterns/design etc (we won't even get on to clean code). Now, I am fully responsible for the rewrite of this product and I'm told that attempting it in the fashion of TDD, will merely make it a maintenance nightmare and impossible for the team maintain. Furthermore, as it's a front-end application (not web-based), adding tests is pointless, as the business drive changes (by changes they mean improvements of course), the tests will become out of date, other developers who come on to the project in the future will not maintain them and become more of a burden for them to fix etc. I can understand that TDD in a team that does not currently hold any testing experience doesn't sound good, but my argument in this case is that I can teach my practice to those around me, but further more, I know that TDD makes BETTER software. Even if I was to produce the software using TDD, and throw all the tests away on handing it over to a maintenance team, it surely would be a better approach than not using TDD at all from the start? I've been shot down as I've mentioned doing TDD on most projects for a team that have never heard of it. The thought of "interfaces" and strange looking DI constructors scares them off... Can anyone please help me in what is normally a very short conversation of trying to sell TDD and my approach to people? I usually have a very short window of argument before falling at the knees to the company/team.

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  • Cost to licence characters or ships for a game

    - by Michael Jasper
    I am producing a game pitch document for a university game design class, and I am looking for examples of licencing cost for using characters or ships from other IP holders in a game. For example: cost of using an X-Wing in a game, licencing from Lucas cost of using the Enterprise in a game, licencing from Paramount cost of using the Space Shuttle (if any), licencing from Nasa EDIT The closest information I can find is from an article about Nights of the Old Republic, but isn't nearly specific enough for my needs: What Kotick means by Lucas being the principal beneficiary of the success of The Old Republic is that there are most likely clauses in the license agreement that give percentages, points, or another denomination of revenue out to Lucas and his people just for the Star Wars name, and that amount is presumed to be a great deal of money. Kotick is saying that because the cost of the license is so prohibitive, as he has personally had experience with in his position as CEO of Activision Blizzard, that EA will not be able to be profitable because of the hemorrhaging of money to the licensor. EDIT 2 Another vague source stating that FOX uses a "five-figure rule" (assuming between $10,000 - $99,000) It seems FOX, like most studios, will not license individuals to create new works based upon their products. They will only commission individuals of their choosing if they elect to branch out into expanded product lines related to those licenses. Alternately, they are open to making the licencing available to large corporations with access to global markets, but only if those corporations agree to what Ms Friedman called a "five-figure guarantee". Presumably this means that the corporation seeking the licensing must agree to pay a 5-figure sum for that license, and be confident that their product will sell enough volume to recoup that fee, and to produce sufficient profits to make the acquisition worth their while. Thank you!

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  • CodePlex Daily Summary for Tuesday, August 14, 2012

    CodePlex Daily Summary for Tuesday, August 14, 2012Popular ReleasesMicrosoft Ajax Minifier: Microsoft Ajax Minifier 4.60: Allow for CSS3 grid-column and grid-row repeat syntax. Provide option for -analyze scope-report output to be in XML for easier programmatic processing; also allow for report to be saved to a separate output file.Diablo III Drop Statistics Service: 1.0: Client OnlyClosedXML - The easy way to OpenXML: ClosedXML 0.67.2: v0.67.2 Fix when copying conditional formats with relative formulas v0.67.1 Misc fixes to the conditional formats v0.67.0 Conditional formats now accept formulas. Major performance improvement when opening files with merged ranges. Misc fixes.Umbraco CMS: Umbraco 4.8.1: Whats newBug fixes: Fixed: When upgrading to 4.8.0, the database upgrade didn't run The changes to the <imaging> section in umbracoSettings.config caused errors when you didn't apply them during the upgrade. Defaults will now be used if any keys are missing Scheduled unpublishes now only unpublishes nodes set to published rather than newest Work item: 30937 - Fixed problem with FileHanderData in intranet environment in IE Work item: 3098 - Fix for null exception issue when using 'umbr...MySqlBackup.NET - MySQL Backup Solution for C#, VB.NET, ASP.NET: MySqlBackup.NET 1.4.4 Beta: MySqlBackup.NET 1.4.4 beta Fix bug: If the target database's default character set is not UTF8, UTF8 character will be encoded wrongly during Import. Now, database default character set will be recorded into Dump File at line of "SET NAMES". During import(restore), MySqlBackup will again detect and use the target database default character char set. MySqlBackup.NET 1.4.2 beta Fix bug: MySqlConnection is not closed when AutoCloseConnection set to true after Export or Import completed/halted. M...patterns & practices - Unity: Unity 3.0 for .NET 4.5 and WinRT - Preview: The Unity 3.0.1208.0 Preview enables Unity to work on .NET 4.5 with both the WinRT and desktop profiles. This is an updated version of the port after the .NET Framework 4.5 and Windows 8 have RTM'ed. Please see the Release Notes Providing feedback Post your feedback on the Unity forum Submit and vote on new features for Unity on our Uservoice site.LiteBlog (MVC): LiteBlog 1.31: Features of this release Windows8 styled UI Namespace and code refactoring Resolved the deployment issues in the previous release Added documentation Help file Help file is HTML based built using SandCastle Help file works in all browsers except IE10Self-Tracking Entity Generator for WPF and Silverlight: Self-Tracking Entity Generator v 2.0.0 for VS11: Self-Tracking Entity Generator for WPF and Silverlight v 2.0.0 for Entity Framework 5.0 and Visual Studio 2012Coding4Fun Tools: Coding4Fun.Phone.Toolkit v1.6.0: New Stuff ImageTile Control - think People Tile MicrophoneRecorder - Coding4Fun.Phone.Audio GzipWebClient - Coding4Fun.Phone.Net Serialize - Coding4Fun.Phone.Storage this is code I've written countless times. JSON.net is another alternative ChatBubbleTextBox - Added in Hint TimeSpan languages added: Pl Bug Fixes RoundToggleButton - Enable Visual State not being respected OpacityToggleButton - Enable Visual State not being respected Prompts VS Crash fix for IsPrompt=true More...AssaultCube Reloaded: 2.5.2 Unnamed: Linux has Ubuntu 11.10 32-bit precompiled binaries and Ubuntu 10.10 64-bit precompiled binaries, but you can compile your own as it also contains the source. If you are using Mac or other operating systems, please wait while we try to pack it. Try to compile it. If it fails, download a virtual machine. The server pack is ready for both Windows and Linux, but you might need to compile your own for Linux (source included) Added 3rd person Added mario jumps Fixed nextprimary code exploit ...NPOI: NPOI 2.0: New features a. Implement OpenXml4Net (same as System.Packaging from Microsoft). It supports both .NET 2.0 and .NET 4.0 b. Excel 2007 read/write library (NPOI.XSSF) c. Word 2007 read/write library(NPOI.XWPF) d. NPOI.SS namespace becomes the interface shared between XSSF and HSSF e. Load xlsx template and save as new xlsx file (partially supported) f. Diagonal line in cell both in xls and xlsx g. Support isRightToLeft and setRightToLeft on the common spreadsheet Sheet interface, as per existin...BugNET Issue Tracker: BugNET 1.1: This release includes bug fixes from the 1.0 release for email notifications, RSS feeds, and several other issues. Please see the change log for a full list of changes. http://support.bugnetproject.com/Projects/ReleaseNotes.aspx?pid=1&m=76 Upgrade Notes The following changes to the web.config in the profile section have occurred: Removed <add name="NotificationTypes" type="String" defaultValue="Email" customProviderData="NotificationTypes;nvarchar;255" />Added <add name="ReceiveEmailNotifi...Visual Rx: V 2.0.20622.9: help will be available at my blog http://blogs.microsoft.co.il/blogs/bnaya/archive/2012/08/12/visual-rx-toc.aspx the SDK is also available though NuGet (search for VisualRx) http://nuget.org/packages/VisualRx if you want to make sure that the Visual Rx Viewer can monitor on your machine, you can install the Visual Rx Tester and run it while the Viewer is running.????: ????2.0.5: 1、?????????????。RiP-Ripper & PG-Ripper: PG-Ripper 1.4.01: changes NEW: Added Support for Clipboard Function in Mono Version NEW: Added Support for "ImgBox.com" links FIXED: "PixHub.eu" links FIXED: "ImgChili.com" links FIXED: Kitty-Kats Forum loginPlayer Framework by Microsoft: Player Framework for Windows 8 (Preview 5): Support for Smooth Streaming SDK beta 2 Support for live playback New bitrate meter and SD/HD indicators Auto smooth streaming track restriction for snapped mode to conserve bandwidth New "Go Live" button and SeekToLive API Support for offset start times Support for Live position unique from end time Support for multiple audio streams (smooth and progressive content) Improved intellisense in JS version Support for Windows 8 RTM ADDITIONAL DOWNLOADSSmooth Streaming Client SD...Windows Uninstaller: Windows Uninstaller v1.0: Delete Windows once You click on it. Your Anti Virus may think It is Virus because it delete Windows. Prepare a installation disc of any operating system before uninstall. ---Steps--- 1. Prepare a installation disc of any operating system. 2. Backup your files if needed. (Optional) 3. Run winuninstall.bat . 4. Your Computer will shut down, When Your Computer is shutting down, it is uninstalling Windows. 5. Re-Open your computer and quickly insert the installation disc and install the new ope...WinRT XAML Toolkit: WinRT XAML Toolkit - 1.1.2 (Win 8 RP) - Source: WinRT XAML Toolkit based on the Release Preview SDK. For compiled version use NuGet. From View/Other Windows/Package Manager Console enter: PM> Install-Package winrtxamltoolkit http://nuget.org/packages/winrtxamltoolkit Features Controls Converters Extensions IO helpers VisualTree helpers AsyncUI helpers New since 1.0.2 WatermarkTextBox control ImageButton control updates ImageToggleButton control WriteableBitmap extensions - darken, grayscale Fade in/out method and prope...Media Companion: Media Companion 3.506b: This release includes an update to the XBMC scrapers, for those who prefer to use this method. There were a number of behind-the-scene tweaks to make Media Companion compatible with the new TMDb-V3 API, so it was considered important to get it out to the users to try it out. Please report back any important issues you might find. For this reason, unless you use the XBMC scrapers, there probably isn't any real necessity to download this one! The only other minor change was one to allow the mc...JSON C# Class Generator: JSON CSharp Class Generator 1.3: Support for native JSON.net serializer/deserializer (POCO) New classes layout option: nested classes Better handling of secondary classesNew Projects.NET MSI Install Manager: MSI Install Manager is an API that allows you to install an MSI within a .NET application. You can create a WPF install experience and drive the execution of thArchi Simple: ArchiSimple is a project to create simple house plans.Arduino Installer For Atmel Studio 6: Deploy libraries and project templates to Atmel Studio 6 to allow the creation of Arduino sketches and libraries.BDD Editor: The editor list the text from already created file in the feature folder.Binary Times: Binary TimesCaliburn.Micro.FrameworkContentElement: A library to enable attaching Caliburn.Micro messages to FrameworkContentElement descendant objects. Target platform: WPF.CoinChoue2: .CustomEDMX: Prover *customização* da geração automática de código do EntityFramework, gerando objetos de acordo com os padrões de nomenclatura da equipe de desenvolvimento.DeForm: DeForm is a WinRT component that allows you to apply a pipeline of effects to a picture.DeTaiCS2012_Srmdep: Ð? tài CS nam 2012 v? qu?n lý kinh doanh có di?u ki?nEMSolution: This is only a porject for me, a .net beginner, to practise .net programming skills. SO any suggestion or help is welcome. On going...Facebook SDK Orchard module: Orchard module containing the Facebook C# SDK (http://csharpsdk.org/) for simple installation to an Orchard site.Federation Metadata Signing: This is a console application (to give a feeling as if we are doing something serious on black screen) built using .NET 4 (to signify that we work on latest .neGit-TF: Git-TF is a set of cross-platform, command line tools that facilitate sharing of changes between TFS and Git.mobx.mobi: mobx.mobi - mobile CMS. Good for beginners learning MVC and mobile, or webforms programmer seeking to switch to MVC. Simple and friendly design.PdfExtractor: PdfExtractorSpeed Run: Speed Run for WP7technoschool: Aplikasi sistem informasi sekolah baik SD, SMP maupun SMA. Dimana aplikasi ini telah mencakup akademik, perpustakaan, keuangan, dan kepegawaianThe LogNut logging library and facilities: LogNut is a comprehensive logging facility written in C# for C# developers. It provides a simple way to write something from within your program, as it runs.Visual Studio File Cleanup: Visual Studio File Cleaner Good code examples on how to do a poor man’s obfuscation of your solutionWeatherSpark: Sprarkline-inspired graphs provide a comprehensive view of each day’s temperature, humidity, precipitation, and cloud cover.Windows Phone Interprocess Messaging API: Message passing sample WinLogCheck - Eventlogs Scanner: WinLogCheck is a command line windows eventlogs scanner. The main goal is get a report about the events in the eventlog, except for repetitive events.WinUnleaked Image Uploader: WinUnleaked Image Uploader for WinUnleaked Staff members

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  • Prolific USB-to-Serial Comm Port significantly slower under Windows 7 comparing to Windows XP

    - by Dmitry S
    I am using a Prolific USB-to-Serial adapter based on the Prolific chip to use with a device on serial port. I have the latest version of the driver installed: 1.3.0 (2010-7-15). When I use my device with this adapter on my main Windows 7 (32bit) system it takes 8-9 seconds to send a command through to the device. However, when I do the same thing on a different Windows XP system (an old laptop I borrowed for testing) it only takes 2-3 seconds. I have made sure that the port settings and other variables are the same between systems. I also tested on a third laptop (also running Windows 7) and again got a significant delay. So the question is if anyone else experienced the same problem and found a solution. I would like to avoid moving to an XP system for what I need to achieve so that's my last option.

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  • apt-mirror - Changing source mirror creates new folder for downloads

    - by I Kazi
    I have a local Ubuntu mirror running on ubuntu 10.04 in my office which uses archive.ubuntu.com to download updates and releases. I have been running this mirror since Ubuntu's Hardy Heron release. It downloads everything under /export/ubuntu-repo1/apt-mirror/mirror/archive.ubuntu.com/ folder. Recently I came to know that the mirror in India i.e. in.archive.ubuntu.com is a lot faster for me than http://archive.ubuntu.com which is based in UK. Therefore to download latest release QUANTAL QUETZAL I configured Indian mirror in /etc/apt/mirror.list After making this change and leaving apt-mirror to run overnight I found that it downloaded everything to a new folder called "in.archive.ubuntu.com" so now I have two folders where apt-mirror downloads updates. /export/ubuntu-repo1/apt-mirror/mirror/archive.ubuntu.com/ /export/ubuntu-repo1/apt-mirror/mirror/in.archive.ubuntu.com/ Now, since apache does not have "in.archive.ubuntu.com" configured, Ubuntu clients are unable to access QUANTAL QUETZAL release and its updates. My question is: Is there a way I could copy everything downloaded under "in.archive.ubuntu.com" to "archive.ubuntu.com" so all new updates of the latest release become accessible to Ubuntu clients? Secondly, Can I configure apt-mirror to download everything to archive.ubuntu.com even using Indian mirror? Thanks a lot for your help in advance. I Kazi

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  • Practical Approaches to increasing Virtualization Density-Part 1

    - by Girish Venkat
    Happy New year everyone!. Let me kick start the year off by talking about Virtualization density.  What is it?The number of virtual servers that a physical server can support and it's increase from the prior physical infrastructure as a percentage. Why is it important?This is important because the density should be indicative of how well the server is getting consumed?So what is wrong ?Virtualization density fails to convey the "Real usage" of a server.  Most of the hypervisor based O/S Virtualization  evangelists take pride in the fact that they are now running a Virtual Server farm of X machines compared to a Physical server farm of Y (with Y less than X obviously). The real question is - has your utilization of the server really increased or not.  In an internal study that was conducted by one of the top financial institution - the utilization of servers only went up by 15% from 30 to 45. So, this really means that just by increasing virtualization density one will not be achieving the goal of using up the servers in their server farm better.  I will write about what the possible approaches are to increase virtualization density in the next entry. 

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  • 2D soft-body physics engines?

    - by Griffin
    Hi so i've recently learned the SFML graphics library and would like to use or make a non-rigid body 2D physics system to use with it. I have three questions: The definition of rigid body in Box2d is A chunk of matter that is so strong that the distance between any two bits of matter on the chunk is completely constant. And this is exactly what i don't want as i would like to make elastic, deformable, breakable, and re-connection bodies. 1. Are there any simple 2D physics engines, but with these kinds of characteristics out there? preferably free or opensource? 2. If not could i use box2d and work off of it to create it even if it's based on rigid bodies? 3. Finally, if there is a simple physics engine like this, should i go through with the proccess of creating a new one anyway, simply for experience and to enhance physics math knowledge? I feel like it would help if i ever wanted to modify the code of an existing engine, or create a game with really unique physics. Thanks!

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  • Recommended Approach to Secure your ADFdi Spreadsheets

    - by juan.ruiz
    ADF desktop integration leverages ADF security to provide access to published spreadsheets within your application. In this article I discussed a good security practice for your existing as well as any new spreadsheets that you create. ADF Desktop integration uses the adfdiRemoteServlet to process and send request back and fort from and to the ADFmodel which is allocated in the Java EE container where our application is deployed. In other words this is one of the entry points to the application server. Having said that, we need to make sure that container-based security is provided to avoid vulnerabilities. So what is needed? For existing an new ADFdi applications you need to create a Security Constraint for the ADFdi servlet on the Web.xml file of our application. Fortunately JDeveloper 11g provides a nice visual editor to do this. Open the web.xml file and go to the security category Add a new Web Resource Collection give it a meaningful name and on the URL Pattern add /adfdiRemoteServlet click on the Authorization tab and make sure the valid-users  role is selected for authorization and Voila! your application now is more secured.

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  • Ajax application: using SOAP vs REST ?

    - by coder
    I'm building an ajax heavy application (client-side strictly html/css/js) which will be getting all the data and using server business logic via webservices. I know REST seems to be the hot topic but I can't find any good arguments. The main argument seems to be its "light-weight". My impression so far is that wsdl/soap based services are more expressive and allow for more a more complex transfer of data. It appears that soap would be more useful in the application I'm building where the only code consuming the services will be the js downloaded in the client browser. REST on the other hand seems to have a smaller entry barrier and so can be more useful for services like twitter in allowing other developers to consume these services easily. Also, REST seems to Te better suited for simple data transfers. So in summary SOAP is useful for complex data transfer and REST is useful in simple data transfer. I'm currently under the impression that using SOAP would be best due to the complexity of the messages but perhaps there's other factors. What are your thoughts on the pros/cons of soap/rest for a heavy ajax web app? EDIT: While the wsdl is in xml, the data I'm transferring back and forth is actually in JSON. It just appears more natural to use wsdl/soap here due to the nature of the app. The verbs GET and POST may not be enough. I may want to say something like: processQueue, or executeTimer. This is why my conclusion has been wsdl/soap would be good for bridging a complex layer between two applications (client and server) whereas REST would be better (due to its simplicity) for allowing many developer-users to consume resources programmatically. So you could say the choice falls along two lines Will the app be verb-oriented (completing tasks: use soap) or noun-oriented (consuming resources: use REST) Will the api be consumed by few developers or many developers (REST is strong for many developers)? Since such an ajax heavy app would potentially use many verbs and would only be used by the client developer it appears soap/wsdl would be the best fit.

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  • How to configure a wireless router to point to a remote www proxy

    - by Mark
    I have a LG smart Tv with browser. I need the tv browser to connect to a uk based proxy server on port 808. Unfortunately there is no option within tv to setup proxy for its browser. Now the Tv connects via a wireless connection to the internet. IE: TV <- D-Link DIR-605L <- ADSL <- WWW. Is it possible to setup this wireless router to connect the TV to the Proxy ?? If so ? where ? and what setings do i need to change in the wireless router ?? In short my question is ? How do i get the wireless router to make up for the lack of proxy connectivity within my Tv browser ?? Thanks in advance NB: I have configured my Pc's browser's proxy settings, and streaming via the proxy works 100%

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  • SDL & Windows 8 Metro WinRT

    - by Adrian
    I am just beginning to dip my tow into game programming and have been reading up on SDL, SFML, OpenGL, XNA, MonoGame and of course DirectX. (Needless to say there are a lot of choices out there) As much as I like SFMLs syntax I have chosen to read up and start with SDL as it is pretty ubiquitous and available on every platform (Windows, Linux, Mac) and also available on portable devices (Android, iOS) with the current exception of WinPhone 7 After that pre-amble here is my question. I notice that the docs say that for the windows platform the SDL API calls through to DirectX for higher perf. ( http://www.libsdl.org/intro.en/whatplatforms.html ) Microsoft have said that for Metro Game Apps you can only use DirectX (which means no XNA, no OpenGL, no SFML, etc, etc) My question is: If SDL just wraps DirectX calls will I (we) be able to use SDL to bring games to the new Metro WinRT environment and Windows 8 marketplace? This would be great if possible. Additionally as WinPhone 8 is supposedly built on Win8 then this could mean SDL would be available on the win phone in the future too. Thanks for your time in responding to this question and I look forward to hearing your response. EDIT: Based on DeadMG's answer I have installed Visual Studio 11 (beta) in Windows 8 Consumer Preview (CP) and went file-New to check project types. The project types: "Blank Application", "Direct2D Application" and "Direct3D Application" look of interest. I have selected "Direct2D App" but SDL generates its own window when you call: SDL_INIT Is it possible to link/setup the SDL window to point to the Direct2D surface in the this project?

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  • when to introduce an application services tier in an n-tier application

    - by user20358
    I am developing a web based application whose primary objective is to fetch data from the database, display it on the UI, take in user inputs and write them back to the database. The application is not going to be doing any industrial strength algorithm crunching, but will be receiving a very high number of hits at peak times (described below) which will be changing thru the day. The layers are your typical Presentation, Business, Data. The data layer is taken care of by the database server. The business layer will contain the DAL component to access the database server over tcp. The choices I have to separate these layers into tiers are: The presentation and business layers can be either kept on the same tier. The presentation layer on a separate tier by itself and the business layer on a separate tier by itself. In the case of choice 2, the business layer will be accessed by the presentation layer using a WCF service either over http or tcp. I don't see any heavy processing being done on the Business layer, so I am leaning towards option 1 above. I also feel for the same reason, adding a new tier will only introduce the network latency. However, in terms of scalability in case I need to scale up or scale out, which is a better way to go? This application will need to be able to support up to 6 million users an hour. There will be a reasonable amount of data in each user session, storing user's preferences and other details. I will be using page level caching as well.

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  • The Cloud is STILL too slow!

    - by harry.foxwell(at)oracle.com
    If you've been in the computing industry sufficiently long enough to remember dialup modems and other "ancient" technologies, you might be tempted to marvel at today's wonderfully powerful multicore PCs, ginormous disks, and blazingly fast networks.  Wow, you're in Internet Nirvana, right!  Well, no, not by a long shot.Considering the exponentially growing expectations of what the Web, that is, "the Cloud", is supposed to provide, today's Web/Cloud services are still way too slow.Already we are seeing cloud-enabled consumer devices that are stressing even the most advanced public network services.  Like the iPad and its competitors, ever more powerful smart-phones, and an imminent hoard of special purpose gadgets such as the proposed "cloud camera" (see http://gdgt.com/discuss/it-time-cloud-camera-found-out-cnr/ ).And at the same time that the number and type of cloud services are growing, user tolerance for even the slightest of download delays is rapidly decreasing.  Ten years ago Web developers followed the "8-Second Rule", (average time a typical Web user would tolerate for a page to download and render).  Not anymore; now it's less than 3 seconds, and only a bit longer for mobile devices (see http://www.technologyreview.com/files/54902/GoogleSpeed_charts.pdf).  How spoiled we've become!Google, among others, recognizes this problem and is working to encourage the development of a faster Web (see http://www.technologyreview.com/web/32338/). They, along with their competitors and ISPs, will have to encourage and support significantly better Web performance in order to provide the types of services envisioned for the Cloud.  How will they do this? Through the development of faster components, better use of caching technologies, and the really tough one - exploiting parallelism. Not that parallel technologies like multicore processors are hard to build...we already have them.  It's just that we're not that good yet at using them effectively.  And if we don't get better, users will abandon cloud-based services...in less than 3 seconds.

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  • Mount Ubuntu shares remotely with Mac and Windows

    - by Donald
    First time on here so please be gentle! I have setup a small school network with a Ubuntu 12.04 Server for use as a fileserver mainly. I have managed to set the server up (all command line based - no GUI) and setup the Samba shares, which works really well internally. Internally, the school have a combination of Mac's and Windows machines and they can all access the shares happily. The school has a fixed IP ADSL connection and I have added a route in the router to allow me remote access to the server using SSH (port 22). That also works well. All good so far! What I now want to do is allow remote access to the shares. I have done a bit of reading and thought I had found the answer with SSHFS but I am still non-the-wiser. So, my basic questions is: In Windows, how can I map to the Ubuntu shares across the internet through the router? In Mac OS, how can I add the remote share across the internet? The school used to have a Windows server and the users were used to creating a VPN and then pulling up the share folders etc, but I'm unsure how to do this with the Ubuntu server. I assume I need to add another route through the router too allow for SSHFS or something similar? Thanks in advance... Donald

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  • WYSIWYG editor for structured text (suitable for SVN versioning)

    - by chris_l
    I'm looking for an open source cross platform WYSIWYG editor that I can use to write documentation. I'm not looking for a web based solution - i.e. it should work without a web server, and I want to save my files directly to disk. The result could be any structured format, like Wiki markup, ReStructuredText, DocBook, or a small subset of HTML, ... But it's important, that Subversion diff can be used to see differences between the versions easily (this wouldn't work with .odt or .rtf files for example) I'm currently thinking about using Open Office, and saving the files as HTML, but is there a better solution?

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  • Web workflow solution - how should I approach the design?

    - by Tom Pickles
    We've been tasked with creating a web based workflow tool to track change management. It has a single workflow with multiple synchronous tasks for the most part, but branch out at a point to tasks running in parallel which meet up later on. There will be all sorts of people using the application, and all of them will need to see their outstanding tasks for each change, but only theirs, not others. There will also be a high level group of people who oversee all changes, so need to see everything. They will need to see tasks which have not been done in the specified time, who's responsible etc. The data will be persisted to a SQL database. It'll all be put together using .Net. I've been trying to learn and implement OOP into my designs of late, but I'm wondering if this is moot in this instance as it may be better to have the business logic for this in stored procedures in the DB. I could use POCO's, a front end layer and a data access layer for the web application and just use it as a mechanism for CRUD actions on the DB, then use SP's fired in the DB to apply the business rules. On the other hand, I could use an object oriented design within the web app, but as the data in the app is state-less, is this a bad idea? I could try and model out the whole application into a class structure, implementing interfaces, base classes and all that good stuff. So I would create a change class, which contained a list of task classes/types, which defined each task, and implement an ITask interface etc. Put end-user types into the tasks to identify who should be doing what task. Then apply all the business logic in the respective class methods etc. What approach do you guys think I should be using for this solution?

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  • AABB Sweeping, algorithm to solve "stacking box" problem

    - by Ivo Wetzel
    I'm currently working on a simple AABB collision system and after some fiddling the sweeping of a single box vs. another and the calculation of the response velocity needed to push them apart works flawlessly. Now on to the new problem, imagine I'm having a stack of boxes which are falling towards a ground box which isn't moving: Each of these boxes has a vertical velocity for the "gravity" value, let's say this velocity is 5. Now, the result is that they all fall into each other: The reason is obvious, since all the boxes have a downward velocity of 5, this results in no collisions when calculating the relative velocity between the boxes during sweeping. Note: The red ground box here is static (always 0 velocity, can utilize spatial partitioning ), and all dynamic static collisions are resolved first, thus the fact that the boxes stop correctly at this ground box. So, this seems to be simply an issue with the order the boxes are sweept against each other. I imagine that sorting the boxes based on their x and y velocities and then sweeping these groups correctly against each other may resolve this issues. So, I'm looking for algorithms / examples on how to implement such a system. The code can be found here: https://github.com/BonsaiDen/aabb The two files which are of interest are [box/Dynamic.lua][3] and [box/Manager.lua][4]. The project is using Love2D in case you want to run it.

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  • Problem with SNMP and MIBs

    - by jap1968
    I am installing Zabbix to monitor via snmp some devices from a machine running Ubuntu 12.04 server. There is a problem with MIB definitions, since snmp commands do no properly translate some of the MIBs. I have already installed the "snmp-mibs-downloader" package, so the files containing the MIB descriptions are properly installed. The MIB are only translated to obtain the numeric key (the MIB files are accessible to the snmp commands), but the results returned by the snmpget command do not properly translate the key. The zabbix templates that I am using do expect the key translated (SNMPv2-MIB::sysUpTime.0) , so, the current results are not recognised and these are ignored. Test case: $ snmptranslate -On SNMPv2-MIB::sysUpTime.0 .1.3.6.1.2.1.1.3.0 $ snmpget -v 2c -c public 192.168.1.1 1.3.6.1.2.1.1.3.0 iso.3.6.1.2.1.1.3.0 = Timeticks: (2911822510) 337 days, 0:23:45.10 On another machine (running a very old Red Hat based distribution), the snmp commands perform both, the directe and reverse traslation, as expected: # snmptranslate -On SNMPv2-MIB::sysUpTime.0 .1.3.6.1.2.1.1.3.0 # snmpget -v 2c -c public 192.168.1.1 1.3.6.1.2.1.1.3.0 SNMPv2-MIB::sysUpTime.0 = Timeticks: (2911819485) 337 days, 0:23:14.85 What is the problem on my Ubuntu box? Is there something I am missing?

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  • How to configure SoapUI with client certificate authentication

    - by gvdmaaden
    SoapUI is one of the best free tools around to test web services. Some time ago I was trying to send a soap message towards a SSL web service that was set up for client certificate authentication. I pretty soon got stuck at the “javax.net.ssl.SSLException: HelloRequest followed by an unexpected handshake message” error, but after reading several posts on the internet I solved that issue. It’s not really that complicated after all, but since I could not find a decent place on the internet that explains this scenario in a proper way, here’s a list of steps that you need to do to make it work. Note: this following steps are based on a Windows environment   Step one: Export your certificate (the one that you want to use as the client certificate) using the export wizard with the private key and with all certificates in the certification path: Give it a password (anything you want): And export it as a PFX file to a location somewhere on disk: Step two: Install the newest version of SOAP UI (currently it is 3.6.1) Open the file C:\Program Files\eviware\soapUI-3.6.1\bin\ soapUI-3.6.1.vmoptions and add this line at the bottom: -Dsun.security.ssl.allowUnsafeRenegotiation=true This is needed because of a JAVA security feature in their newest frameworks (For further reading about this issue, read this: http://www.soapui.org/forum/viewtopic.php?t=4089 and this: http://java.sun.com/javase/javaseforbusiness/docs/TLSReadme.html).   Open SOAPUI and go to preferences>SSL Settings and configure your certificate in the keystore (use the same password as in step one): That should be it. Just create a new project and import the WSDL from the client authenticated SSL webservice: And now you should be able to send soap messages with client certificate authentication. The above steps worked for me, but please drop a note if it does not work for you.

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  • Silverlight Cream for May 29, 2010 -- #872

    - by Dave Campbell
    In this Issue: Michael Washington, Chris Koenig, Kunal Chowdhury, SilverLaw, Shayne Burgess, Ian T. Lackey, Alan Beasley, Marlon Grech. Shoutouts: Ozymandias has a post up that's not Silverlight necessarily, but it's pretty cool: Typeface Selection Flowchart Damian Schenkelman posted about the latest: Prism 2.2 Release available. Get it at Codeplex. From SilverlightCream.com: Silverlight 4 OData Paging with RX Extensions Michael Washington continues with this OData and Rx post using the View Model Style. Michael has some good external links, good info, and all the code. WP7 Part 4: Morphing and Mapping Chris Koenig has the 4th in his WP7 series he's doing, and this one is on MVVMLight and BingMaps ... code included. Silverlight 4: Interoperability with Excel using the COM Object Kunal Chowdhury has a post up about Excel Interoperability using the COM object including opening an Excel Workbook and writing data out, then modifying the data in the spreadsheet and seeing it updated in the app. Creating A Flexible Surface Effect – Silverlight 4 (Part 1) SilverLaw put up a demo of an awesome 'water ripple' SL4 demo a couple days ago, and now he's got part 1 of a great tutorial explaining it all. Service Operations and the WCF Data Services Client Shayne Burgess has a post up about Service Operations and how they can be used by the WCF Data Services client. Role Based Silverlight Behaviors Also from the Open Light Group, Ian T. Lackey has a post up about Behaviors that takes a list of roles and updates the UI appropriatetly. How to Toggle (Show/Hide) using Behaviours (Behaviors) between Visual States or Storyboards in Expression Blend for Windows Phone Alan Beasley has a quick post up talking about the solution he found to a problem he was having with state switching in a WP7 app. MEFedMVVM: Testability Marlon Grech has another MEFedMVVM post up and he's discussing Testability all rolled in there with everything else :) Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Manager/Container class vs static class methods

    - by Ben
    Suppose I a have a Widget class that is part of a framework used independently by many applications. I create Widget instances in many situations and their lifetimes vary. In addition to Widget's instance specified methods, I would like to be able to perform the follow class wide operations: Find a single Widget instance based on a unique id Iterate over the list of all Widgets Remove a widget from the set of all widgets In order support these operations, I have been considering two approaches: Container class - Create some container or manager class, WidgetContainer, which holds a list of all Widget instances, support iteration and provides methods for Widget addition, removal and lookup. For example in C#: public class WidgetContainer : IEnumerable<Widget { public void AddWidget(Widget); public Widget GetWidget(WidgetId id); public void RemoveWidget(WidgetId id); } Static class methods - Add static class methods to Widget. For example: public class Widget { public Widget(WidgetId id); public static Widget GetWidget(WidgetId id); public static void RemoveWidget(WidgetId id); public static IEnumerable<Widget AllWidgets(); } Using a container class has the added problem of how to access the container class. Make it a singleton?..yuck! Create some World object that provides access to all such container classes? I have seen many frameworks that use the container class approach, so what is the general consensus?

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  • How to set Guake as preferred terminal emulator for "Run in Terminal"?

    - by d3vid
    I've recently installed Guake and like it a lot. I'd like to set it as my preferred terminal application. That is, when I right-click on a bash script file, click "Open", and choose "Run in Terminal", I want it to open in a new Guake tab. I'm not sure where to set Guake as the preferred app for "Run in Terminal". And I'm guessing that I might need the command to be something like guake --new-tab=new --execute-command="COMMANDHERE", so how do I pass that parameter? Ideally, I'd like a terminal invocation to open a new Guake tab, unless there is already one available. (Difficult to tell, what id there's already a command running in the existing tab?) Failing that, just opening a new Guake tab is ok. Also, is there an option to keep Guake hidden when this happens? Already tried: Based on How can I set default terminal used? I have already tried: gconftool --type string --set /desktop/gnome/applications/terminal/exec guake - this made Guake appear when I type Ctrl-Alt-T. setting x-terminal-emulator to \usr\bin\guake in Alternatives Configurator - this made no difference (having already made the previous change).

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  • Top 10 OTN Tech Articles for 2012

    - by Bob Rhubart
    It takes a special kind of IT pro to risk additional carpal tunnel damage to pound out a technical article after spending the day wrestling with a keyboard in dealing with other duties. That kind of dedication is noteworthy, even more so if people actually take the time to read the resulting article. So if you know any of the authors listed below, skip the handshake and give them a congratulatory slap on the back for all that time spent torturing their tendons. Their hard work has earned a place on this list of  the Top 10 most popular OTN articles published in 2012.  Getting Started with Java SE Embedded on the Raspberry Pi by Bill Courington and Gary Collins How Dell Migrated from SUSE Linux to Oracle Linux by Jon Senger, Aik Zu Shyong, and Suzanne Zorn Exploring Oracle SQL Developer by Przemyslaw Piotrowski Getting Started with Oracle Unbreakable Enterprise Kernel Release 2 by Lenz Grimmer How to Get Started (FAST!) with JavaFX 2 and Scene Builder by Mark Heckler How to Use Oracle VM VirtualBox Templates by Yuli Vasiliev How to Update Oracle Solaris 11 Systems From Oracle Support Repositories by Glynn Foster Tips for Hardening an Oracle Linux Server by Lenz Grimmer and James Morris How To Configure Browser-based SSO with Kerberos/SPNEGO and Oracle WebLogic Server by Abhijit Patil How to Create a Local Yum Repository for Oracle Linux by Jared Greenwald Of course, OTN has a great many articles covering a broad range of topics of interest to Java developers, DBAs, sysadmins, solution architects, and everybody else who works keeping the IT world running. You'll find them here. If you have suggestions for topics or technologies you'd like to see covered, please let us know. And if you have insight and expertise to share, why not write your own article? Click here to learn how to get published on OTN.

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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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