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• SQL SERVER Quick Note of Database Mirroring

  Just a day ago, I was invited at Round Table meeting at prestigious organization. They were planning to implement High Availability solution using Database Mirroring. During the meeting, I have made few notes of what was being discussed there. I just thought it would be interested for all of you know about it.Database Mirroring works [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Enabling SSL Requests on Jdev's Integrated Weblogic

  - by Christian David Straub

  Often times you will want to enable SSL access for such things as secure login or secure signup. By default, the integrated WLS that ships with JDev does not listen to SSL requests. However, this is easily fixed.Just navigate to http://127.0.0.1:7101/console. This will deploy the console app where you can configure WLS. By default the login credentials are:username: weblogicpassword: weblogic1Then go to Environment -> Servers -> DefaultServer. Check the "SSL Listen Port Enabled" box and your server will now listen to SSL requests (just make sure to use the listen port that is specified).For added security, you can always check while processing your request that it is going through an SSL connection by first checking HttpServletRequest.isSecure().

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• What are best practices when giving a presentation to programmers?

  - by blunders

  I've watched 50 plus presentations on programming topics, although most have been online; example, Google Tech Talks -- and have ad-hoc experience on what formats work for programmers, or practices to take into account when presenting to a group of programmers. That said, I'm open to any suggestions, but here's some topic of the top of my head: Programming Jokes, Images, etc. Posting Code for download Contact Info Collecting feedback Presenting Code on Screen If it matters, in this case -- I'm giving a presentation on using a scripting language to extract, transform and load data to a local user group who's focus is the scripting language; Ruby in this case. Questions, feedback, requests -- just comment, thanks!!

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• Databinding to an Entity Framework in WPF

  - by King Chan

  Is it good to use databinding to Entity Framework's Entity in WPF? I created a singleton entity framework context: To have only one connection and it won't open and close all the time. So I can pass the Entity around to any class, and can modify the Entity and make changes to the database. All ViewModels getting the entity out from the same Context and databinding to the View saves me time from mapping new object, but now I imagine there is problem in not using the newest Context: A ViewModel databinding to a Entity, then someone else updated the data. The ViewModel will still display the old data, because the Context is never being dispose to refresh. I always create new Context and then dispose of it. If I want to pass the Entity around, then there will be conflicts between Context and Entity. What is the suggested way of doing this ?

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• How to break terrain (in blender) into Chunks for a game engine

  - by Red

  I've created an island in blender. 2048x2048 blender units. The engine developer wants me to split the terrain into 128x128 "chunks" so that would be 16x16 "chunks" from a top down view. The engine isn't using height maps, in order to allow caves, 3d overhangs, etc. I'm not in charge of the engine, so suggestions about that aren't needed here :/ I just need a good, seamless way to split a terrain mesh into 16x16 pieces without leaving holes. I'm very new to blender, so baby steps are very much welcomed :) Here's a quick render of what i've got so far. I added a plane to show sea level but i've since removed it. http://i.imgur.com/qTsoC.png

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• Databound Accordian Control

  This sample shows how to bind data to an AJAX Accordian control, using the AJAX Control Toolkit. The first thing you will need to do, is to download it from the AJax.ASP.Net website. Then, once it's downloaded and installed, go to the Bin folder, where it's located, find the AjaxcontrolToolkit.dll and copy it to the Bin folder of your website. Once it's there, you're off to the races. Note the 'Register' statement at the top of the code here, and then, look at the different properties in the control itself. When databinding the Accordian control, you will use the HeaderTemplate and ContentTemplate tags, instead of the normal Header and Content pane tags. Add a little CSS for flavor (see the ContentCssClass property of the Accordian control, and the DIV class for the header), and we're good to go.

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• Telerik Introduces New Developer Tool Designed to Simplify Unit Test Mocking

  JustMock extends Teleriks commitment to providing Visual Studio developer productivity Waltham, MA, April 13, 2010 Telerik, the leading vendor of development tools and user interface components for .NET, today announced the introduction of JustMock, a productivity add-in for Microsoft? Visual Studio 2008 and 2010. JustMock helps developers easily create object mockings in unit tests, saving time and improving the quality of software testing. JustMock is being introduced as a Beta and is scheduled...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Can't ping Ubuntu laptop from my LAN

  - by oskar

  My laptop has Ubuntu 10.10 and is connected to my router with full internet access, yet I can't ping it from other computers on my LAN. I tried the following: I can successfully ping those other computers from my Ubuntu laptop, so I didn't accidentally connect to someone else's network. I can successfully ping my Ubuntu laptop from itself, though I don't know if that means anything. I haven't messed with iptables at all, so it currently doesn't have any rules set that would cause it to reject anything. I made a DHCP reservation for my laptop's MAC address in my router to make sure I was always using the correct IP address. Please note that I am using a "command line only" install of Ubuntu, so I can't use any GUI network config tools. The reason I want to ping it is because I am trying to run an NFS server on the laptop, yet despite correctly setting it up I cannot access the NFS volume on another computer because it isn't even visible on the network right now.

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• Software rendering 3d triangles in the proper order

  - by at.

  I'm implementing a basic 3d rendering engine in software (for education purposes, please don't mention to use an API). When I project a triangle from 3d to 2d coordinates, I draw the triangle. However, it's in a random order and so whatever gets drawn last draws on top of all other triangles (which might be in front of triangles it shouldn't be in front of)... Intuitively, seems I need to draw the triangles in the correct order. So I can calculate all their distances to the camera and sort by that. The objects furthest away get drawn last. Is this the proper way to render triangles? If I'm sorting all the objects, this is n*log(n) now. Is this the most efficient way to do this?

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• Simulate Geo Location in Silverlight Windows Phone 7 emulator

  If youve been excited about Windows Phone 7 development and the platform being Silverlight for application development, you probably rushed and downloaded all the tools (which are free by the way). You may have even got the samples from the SDK and noticed the Location services examplebut wondered why it doesnt work. If you are just getting started, I created some quickstart videos to help you through some of the basics. You can view them here. In case you havent figured it out: Location services...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Parallel Computing Platform Developer Lab

  This is an exciting announcement that I must share: "Microsoft Developer & Platform Evangelism, in collaboration with the Microsoft Parallel Computing Platform product team, is hosting a developer lab at the Platform Adoption Center on April 12-15, 2010.  This event is for Microsoft Partners and Customers seeking to incorporate either .NET Framework 4 or Visual C++ 2010 parallelism features into their new or existing applications, and to gain expertise with new Visual Studio 2010 tools...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Speaking tomorrow @ JAX, Mainz, Germany

  - by terrencebarr

  Just a quick note: I’ll be speaking at the JAX conference in Mainz, Germany, tomorrow: “JavaFX 2: Java, RIA, Web, and more”, April 17, 18:00 The talk will be giving an overview of JavaFX 2.0, top features, demos, tools, and the roadmap of what’s in store for the technology in 2012 and beyond. Also, be sure to check out the other Oracle sessions: “Java everywhere – The Vision becomes true, again”, Dennis Leung, April 17, 9:00 “Die Oracle-Java-Plattformstrategie zeigt klare Konturen”, Wolfgang Weigend, April 18, 17:30 “Lambdas in Java 8: their Design and Implementation”, Maurizio Cimadamore, April 18, 17:30 “OpenJDK Build Workshop”, Frederik Öhrström, April 18, 20:45 “The Future of Java on Multi-Core, Lambdas, Spliterators and Methods“, Frederik Öhrström, April 19, 10:15 For a complete list of all sessions, see here. Cheers, – Terrence Filed under: Mobile & Embedded Tagged: JavaFX, JAX

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• Two more Entity Framework videos on Pluralsight

  Two new videos that I have created for Visual Studio 2010 have just been published to Pluralsight On-Demand. If you dont have a Pluralsight subscription (yet), these videos are available as part of PODs free guest pass along with lots of other great content. The new vids are Exploring the Classes Generated from an Entity Data Model and Consuming an Entity Data Model from a Separate .NET Project. Theyll be available on the MSDN Data Developer center as well (msdn.microsoft.com/data) in the very...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Finding rows that intersect with a date period

  - by DavidWimbush

  This one is mainly a personal reminder but I hope it helps somebody else too. Let's say you have a table that covers something like currency exchange rates with columns for the start and end dates of the period each rate was applicable. Now you need to list the rates that applied during the year 2009. For some reason this always fazes me and I have to work it out with a diagram. So here's the recipe so I never have to do that again: select  * from    ExchangeRate where   StartDate < '31-DEC-2009'         and EndDate > '01-JAN-2009'   That is all!

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• DotNetNuke Hackathon at CDUG

  In May, Nik Kalyani traveled to the Orlando DotNetNuke User Group to present the first DotNetNuke Hackathon event. The Orlando Hackathon was very well attended and focused on teaching developers about the new MVP design pattern and the WebformsMVP framework that was included in DotNetNuke 5.3. What is a Hackathon? A Hackathon is a developer event that occurs over a short period of time. Hackathons are informal events aimed at teaching developers some new technology which the developers then use...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Skyrim Nexus Mods on Xbox 360 by use of dawnguard?

  - by user17895

  i think it's possible i opened up the dawnguard marketplace content and it consists 3 files: dawnguard.bsa < mod dawnguard.esp <- mod installing file. and spa.bin <-dont know where this is for. and it has been confirmed you can use the top 2 files on pc for a not fully functional dawnguard (barely functional to be exact) and if we could just replace or add a few other bsa and esp files to this marketplace content we could get mods up and running on xbox altough i need confirmation on this. I also have no clue where the spa.bin file for is, i need to examine it some further. Further this is adding a few non-distributed Files to marketplace content and wont get you booted from XBL. Also if anyone wants to examine these files for further information i will gladly share them with you. if you have any information or answers please email me at [email protected] thx

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• The incomplete list of impolite WP7 dev requests

  In my previous list of WP7 user requests, I piled all of my user hopes and dreams for my new WP7 phone (delivery date: who the hell knows) onto the universe as a way to make good things happen. And all that’s fine, but I’m not just a user; like most of my readers, I’m also a developer and have a need to control my phone with code. I have a long list of applications I want to write and an even longer list of applications I want other developers to write for me.   Today at 1:30p...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Jesse Liberty at the Montreal User Group, take 3

  This is our last attempt to get Jesse Liberty at the Montreal User Group (and there wont be any take 4 as this is the very last meeting of the season), so we cross fingers that everything will be fine this time! RunAtServer Consulting is the proud sponsor of this event. What: Silverlight 4, MVVM and Test-Driven Development When: June 16, 2010 at 6:15pm. Where: Microsoft Montreal office at 2000 McGill College, 4th floor, Montreal, QC, H3A 3H3. Price: Free for members of the User...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• A pixel is not a pixel is not a pixel

  Yesterday John Gruber wrote about the upped pixel density in the upcoming iPhone (960x480 instead of 480x320), and why Apple did this. He also wondered what the consequences for web developers would be.Now I happen to be deeply engaged in cross-browser research of widths and heights on mobile phones, and can state with reasonable certainty that in 99% of the cases these changes will not impact web developers at all.The remaining 1% could be much more tricky, but I expect Apple to cater to this problem...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Chuck Esterbrook: Geek of the Week

  The Cobra Programming Language is an exciting new general-purpose Open-source language for .NET or Mono, which features unit tests, contracts, informative asserts, generics, Compile-time nil/null tracking, lambda expressions, closures, list comprehensions and generators. Even if it had been developed by a team, it would have been a remarkable achievement. The surprise is that it is the work of one programmer with help from a group of users. We sent Richard to find out more about that one progra...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Better Programming By Programming Better?

  - by ahmed

  I am not convinced by the idea that developers are either born with it or they are not. Where’s the empirical evidence to support these types of claims? Can a programmer move from say the 50th to 90th percentile? However, most developers are not in the 99th or even 90th percentile (by definition), and thus still have room for improvement in programming ability, along with the important skills.The belief in innate talent is “lacking in hard evidence to substantiate it” as well.So how do I reconcile these seemingly contradictory statements? I think the lesson for software developers who wish to keep on top of their game and become experts is to keep exercising the mind via effortful studying. I read a lot technical books, but many of them aren’t making me better as a developer.

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• How do I simulate overprinting in Adobe Reader?

  - by Ben Everard

  On both Mac and Windows when I print a document there is an advanced screen that allows me to select an option called Simulate Overprinting, however such an option doesn't appear on the Ubuntu version. Wikipedia on overprinting: Overprinting refers to the process of printing one colour on top of another in reprographics. This is closely linked to the reprographic technique of 'trapping'. Another use of overprinting is to create a rich black (often regarded as a colour that is "blacker than black") by printing black over another dark colour. This is an issue for us, as we're trying to print documents that need flattening (this is what overprinting does). Am I missing something here, is there a way to enable overprinting on printed PDFs? Note: Please don't confuse simulate overprinting with overprint preview, of which doesn't apply when printing. Just to show you what I'm looking for, this is the Print > Advanced screen... And this is what I see on the Ubuntu screen, not no option for overprinting

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• Installing Ubuntu 12.04 on the Hp Mini 210-2090nr

  - by Dalton Bailey

  When i got this netbook last year i planned n putting ubuntu netbook remix on it but i never did and now i can no longer booot n to windows for some reason so i finally decided to do it but after makig a usb stick with ubuntu on it it will not get to the menu where there is the black and white ubuntu logo and the option to install try and so on. I know to usb is configured correctly it will boot on other computers but on the netbook it only flashes SYSLINUX 4.06EOD..... and then flashs blue before turning black with the whit undercore in the top right corner for a very long time. any suggestions ive been told to disable acpi but i cant find it in the bios. (btw im uing 12.04 though ive tried 11.04 and used unetbootin linux live installer and universal usb installer to make the usb)

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• Highly recommended: "5 Things SQL Server does different from what many developers expect" by Nico Ja

  A couple of weeks ago, the Belgian Techdays were held in Antwerp. Together with Scott Hillier I presented the SharePoint pre-conference sessions (watch them online over here, search for pre-conference or SharePoint). Even though Belgium is not a very big country, the Microsoft team managed to get some high profile speakers like Anders Hejlsberg and Scott Hanselman. But if you have like 60 minutes to spare there is one session that I'd really recommend to check out, not related to SharePoint, but...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• how to get adobe flash fullscreen video fluid with an atom processor?

  - by Antoine Rodriguez

  My system has an atom N270 + intel i915 graphic card. Under Windows I can enjoy 720p bigbuckbunny youtube video fullscreen without any trouble. Under Ubuntu 12.04 I have laggy and choppy fullscreen video and choppy video when not fullscreen. I've seen that under ubuntu the cpu is almost always at 100% use. What I must do in order to have videos playing well under ubuntu ? I've already tried the following : Force flash gpu detection : (no result) : mkdir /etc/adobe echo "OverrideGPUValidation = 1" | sudo tee -a /etc/adobe/mms.cfg grub options (had results but not enough) : i915_enable_rc6=1 i915_enable_fbc=1 i915_lvds_downclock=1 pcie_aspm=force updated intel drivers (glasen ppa) Using chrome instead of firefox (had impact but not enough)

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