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  • Playing a sound on collision?

    - by Eric McLoughlin
    I'm making a pool game. I've separated the gameplay logic and the physics into two systems, entities and physics. Each entity holds a reference to a body which the physics system uses. The body itself holds a reference back to it's owner. When an entity collides with another entity, the Collided(Entity other) method is called on both. What I'm trying to do now is to play a sound when both entities colliding are of a certain subclass. I'm not sure how to do that. I could do it in the Collided method, but then the sound would be played two times at the same time, since the method was called on both entities. How do you suggest I do this?

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  • 45 Different Services, Sites, and Apps to Help You Read Your Favorite Sites (Like How-To Geek)

    - by Eric Z Goodnight
    Ever wonder how geeks stay connected with their favorite blogs and writers? Read on to learn about RSS feeds and how easy they are to use with these 45 apps, services, and websites that can help you stay current. Note: of course, our more geeky readers are going to understand a lot of this already, which is why we included 45 great services that you might not have heard about before. Keep reading for more, or give you advice to the newbies in the comments Latest Features How-To Geek ETC HTG Projects: How to Create Your Own Custom Papercraft Toy How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk What is Camera Raw, and Why Would a Professional Prefer it to JPG? The How-To Geek Guide to Audio Editing: The Basics How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 Lord of the Rings Movie Parody Double Feature [Video] Turn a Webpage into an Asteroids-Styled Shooting Game in Opera Dolphin Browser Mini Leaves Beta; Sports New GUI, Easy Bookmarking, and More Updated Google Goggles Scans Faster; Solves Sudoku Puzzles Snowy Castle Retreat in the Mountains Wallpaper Fix TV Show Sorting Issues on iOS Devices

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  • Upgraded from 11.4 to 11.10, There was an error, now the system won't initiialize

    - by Eric
    This morning the system gave me a message that my Version (11.4) was no longer supported, and I took the 'upgrade' option (- 11.10). While installing the various components I encountered a message to the effect that the there was an error and the system may have become unusable. Among the messges: E:Sup-process /usr/bin/dpkg received a segmentation fault...returned an error code (1). I was given an option to do several things, one of which seemed to mean that it would attempt to roll back to the previous version (the default), which I took. After the process ran it said the upgrade process had finished, but there were errors. I attempted to initialize a console so I could enter ubuntu-bug update-manager /var/log/dist-upgrade, per the instructions I received when I received the error message, but the console failed during initialization. I restarted the machine, and the screen has stopped with the following contents: * Starting bluetooth * Stopping save kernel messages * Starting CUPS printing spooler/server * PulseAudio configured per-user sessions saned disabled: edit /etc/default/saned $starting up Cisco VPN daemon *Starting anac(h)ronistic cron *Stopping anac(h)ronistic cron Each of these steps followed by [ OK ] What are my options? Any help appreciated!

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  • USB internet not accessible

    - by Eric
    I'm brand new to ubuntu and linux. We access internet from a usb stick issued by a local telephone company. When I plug the stick into the computer, I see the device listed under internet connections as a mobile broadband device but it is grayed out and inaccessible. I tried to create a new mobile broadband connection but my country (Gabon) is not listed and we have no payment plans per se (we pay from a pre-paid card system).. Any clues as to how I can get the system to recognize the internet connection? Thanks for any help...

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  • Poll on Entity Framework 4 &ndash; one year on

    - by Eric Nelson
    12 months back (today is March 15th 2010) on the 16th of  March 2009 I created a poll on Entity Framework v1 – the marmite of ORMs? A quick poll…. Entity Framework v1 was getting a mixed reception at the time – I met developers who genuinely hated it and I met developers who were loving the productivity improvements they were seeing. There were definitely issues with v1, too many IMHO. Which is why the product team placed a huge effort on listening to the community to drive the feature set for v2 (which ultimately was named Entity Framework 4 as it ships with .NET 4). I think overall the team have done a great job. It isn’t perfect in .NET 4 (which is why the team are busy on post .NET 4 improvements) but I would happily use it and recommend it for a wide variety of projects – much wider than I would have with v1. I am speaking on EF 4 at www.devweek.com this Wednesday and I thought it would be fun to put a new version of the poll out and see how v4 is being received. Obviously the big difference is we have not yet shipped EF4 vs when I did the original poll on EF1. March 2010 poll – please vote Summary of March 2009 poll – it was a tie between positive and negative Total votes 150 Positive about EF v1 42 (15 + 19 + 8) Negative about EF v1  43 (34 + 9)

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  • What is the best objective way to measure language popularity trends? (What's better than TIOBE?)

    - by Eric Wilson
    The best way to get data on computer language popularity that I know is the TIOBE index. But everyone knows that TIOBE is hopelessly flawed. (If someone provides a link to support this, I'll add it here.) So is there any data on programming language popularity that is generally considered meaningful? The only other option I know is to look at the trends at indeed.com, which is inherently flawed, being based on job postings. It isn't like I would make a future language decision solely based on an index, but it might provide a useful balance to the skewed perspective one obtains by talking to ones friends and colleagues. To illustrate that bias, I'll point out that based on the experience of those I personally know, the only languages used professionally today (in order of popularity) are Java, C#, Groovy, JavaScript, Ruby, Objective C, and Perl. (Though it is evident that C, C++ and PHP were used in the past.) So my question is, everyone bashes TIOBE, but is there anything else? If so, can anyone explain how we know the alternative has better methodology? Thanks.

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  • Advice on how to build html5 basic tile game (multi player, cross device)

    - by Eric
    I just read http://buildnewgames.com/real-time-multiplayer/ which explains the fundamentals and bets practices to build a massive real time multiplayer html5 game. My question is however given the “simplicity” of the game I need to build (simple kind of scratch game where you find or not something behind a tile), do I really need complex tools (canvas or node.js for example) ? The game The gamestakes place with a picture of our office as a background (tilemap). For HR purpose, we wish to create the following game fore employees: each day they can come to the website and click on a certain number of tiles (3 max per day) and find behind it motivation advice and interesting facts about the company. The constraints and rules the screen is divided into isometric 2D square tiles. There are basically an image (photograph of our office) number of tiles on the screen game: about 10,000 to much more (with scroll , see below) the players can scroll in 4 directions there are only 2 types of tiles: already open and closed player can open tiles that have not been yet open by other players there is no path for players : any player can click on any tile on the screen at any moment (if it’s not already done by another player) 2 players can’t be on the same tile at the same moment (or if they can, I’ll have to manage to see which one clicked on it first) only one type of player (all with similar roles), no weapon, no internal score… very simple game. no complex physics (collision only occurs if 2 players are on the same tile) The target I need to achieve: cross device, cross browsers high performance reaction (subsecond reactions) average nb of players per hour: up to 10K players per hour (quite high indeed but it’s because we aim at proving our case for the game to our business unit) So what I would like to know: 2D Tiled map: Do I need tiledmapeditor or can I enable me split the screen like here ? should I use canvas or plain html/css could be sufficient for my need? do I need a game engine/framework such as melon.js or crafty./js ? (even if the game play is extremely basic, I do need mouse and touché device support, mouse emulations on touch devices…) or ca I easily/quickly do it without? for my constraints and targets, should I use CPU acceleration ? for my constraints and targets, should I use web workers ? for the database, for a massively real time game should I avoid to put the current locations of player in MySQL as i feel it might slow me down. What kind of DB should I implement ? Thanks for your help !

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  • Why can't I mount the Ubuntu 12.04 installer ISOs in Mac OS X?

    - by eric
    Over the past few days, I have downloaded both the 32 and 64 bit version of server and desktop to install on an Intel based PC. It is normal from within OS X to double click on an ISO and it will mount the ISO in the finder as well as within disk utility. When I attempt to mount any of the Ubuntu ISOs I downloaded, OS X returns the error message The following disk images couldn't be opened. The reason given for the error is no mountable filesystem. However, I am still able to open the ISO directly from disk utility and burn it to a DVD/CD. What has changed in this release to cause this? Is there something wrong with the current ISOs? The OS X machine I am using is only two weeks old and is having no issues with any other ISO.

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  • How should I implement the repository pattern for complex object models?

    - by Eric Falsken
    Our data model has almost 200 classes that can be separated out into about a dozen functional areas. It would have been nice to use domains, but the separation isn't that clean and we can't change it. We're redesigning our DAL to use Entity Framework and most of the recommendations that I've seen suggest using a Repository pattern. However, none of the samples really deal with complex object models. Some implementations that I've found suggest the use of a repository-per-entity. This seems ridiculous and un-maintainable for large, complex models. Is it really necessary to create a UnitOfWork for each operation, and a Repository for each entity? I could end up with thousands of classes. I know this is unreasonable, but I've found very little guidance implementing Repository, Unit Of Work, and Entity Framework over complex models and realistic business applications.

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  • Cannot get grub menu to timeout (or go away)

    - by Eric
    I am running Ubuntu 12.04. I cannot for the life of me get the grub menu (with options) to go away. I would like it to auto-boot into the first option. I've edited /etc/default/grub so that it looks like the following: GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="" After this, I ran sudo update-grub. Then I realized that I had grub 2, so I ran sudo update-grub2 (both make it look like they create the grub.cfg file successfully. I restart my computer and it goes back to the grub menu and just sits there until I make a choice. This is not desirable if the power goes out... :-) I also tried reinstalling grub using sudo grub-install /dev/sda - also unsuccessful

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  • Syncing between computers / batch download

    - by Eric
    I have synced files from two different devices. Now I want to copy to contents of the synced files to the other device. Using the web interface, it seems only possible to download one file at a time. Is there a way to setup automatic sync or to download all the files in a folder with one step? Thanks in advance for your time. I was using the web interface to ubuntu, but an answer for Ubuntu One would also be ok.

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  • SBT run differences between scala and java?

    - by Eric Cartner
    I'm trying to follow the log4j2 configuration tutorials in a SBT 0.12.1 project. Here is my build.sbt: name := "Logging Test" version := "0.0" scalaVersion := "2.9.2" libraryDependencies ++= Seq( "org.apache.logging.log4j" % "log4j-api" % "2.0-beta3", "org.apache.logging.log4j" % "log4j-core" % "2.0-beta3" ) When I run the main() defined in src/main/scala/logtest/Foo.scala: package logtest import org.apache.logging.log4j.{Logger, LogManager} object Foo { private val logger = LogManager.getLogger(getClass()) def main(args: Array[String]) { logger.trace("Entering application.") val bar = new Bar() if (!bar.doIt()) logger.error("Didn't do it.") logger.trace("Exiting application.") } } I get the output I was expecting given that src/main/resources/log4j2.xml sets the root logging level to trace: [info] Running logtest.Foo 08:39:55.627 [run-main] TRACE logtest.Foo$ - Entering application. 08:39:55.630 [run-main] TRACE logtest.Bar - entry 08:39:55.630 [run-main] ERROR logtest.Bar - Did it again! 08:39:55.630 [run-main] TRACE logtest.Bar - exit with (false) 08:39:55.630 [run-main] ERROR logtest.Foo$ - Didn't do it. 08:39:55.630 [run-main] TRACE logtest.Foo$ - Exiting application. However, when I run the main() defined in src/main/java/logtest/LoggerTest.java: package logtest; import org.apache.logging.log4j.Logger; import org.apache.logging.log4j.LogManager; public class LoggerTest { private static Logger logger = LogManager.getLogger(LoggerTest.class.getName()); public static void main(String[] args) { logger.trace("Entering application."); Bar bar = new Bar(); if (!bar.doIt()) logger.error("Didn't do it."); logger.trace("Exiting application."); } } I get the output: [info] Running logtest.LoggerTest ERROR StatusLogger Unable to locate a logging implementation, using SimpleLogger ERROR Bar Did it again! ERROR LoggerTest Didn't do it. From what I can tell, ERROR StatusLogger Unable to ... is usually a sign that log4j-core is not on my classpath. The lack of TRACE messages seems to indicate that my log4j2.xml settings aren't on the classpath either. Why should there be any difference in classpath if I'm running Foo.main versus LoggerTest.main? Or is there something else causing this behavior? Update I used SBT Assembly to build a fat jar of this project and specified logtest.LoggerTest to be the main class. Running it from the command line produced correct results: Eric-Cartners-iMac:target ecartner$ java -jar "Logging Test-assembly-0.0.jar" 10:52:23.220 [main] TRACE logtest.LoggerTest - Entering application. 10:52:23.221 [main] TRACE logtest.Bar - entry 10:52:23.221 [main] ERROR logtest.Bar - Did it again! 10:52:23.221 [main] TRACE logtest.Bar - exit with (false) 10:52:23.221 [main] ERROR logtest.LoggerTest - Didn't do it. 10:52:23.221 [main] TRACE logtest.LoggerTest - Exiting application.

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  • With NHibernate, how can I create an INHibernateProxy?

    - by Eric
    After lots of reading about serialization, I've decided to try to create DTOs. After more reading, I decided to use AutoMapper. What I would like to do is transform the parent (easy enough) and transform the entity properties if they've been initialized, which I've done with ValueResolvers like below (I may try to make it generic once I get it fully working). This part works. public class OrderItemResolver : ValueResolver<Order, OrderItem> { protected override OrderItem ResolveCore(Order source) { // could also use NHibernateUtil.IsInitialized(source.OrderItem) if (source.OrderItem is NHibernate.Proxy.INHibernateProxy) return null; else return source.OrderItem; } } } When I transform the DTO back to an entity, for the entities that weren't initialized, I want to create a proxy so that if the entity wants to access it, it can. However, I can't figure out how to create a proxy. I'm using Castle if that's relevant. I've tried a bunch of things with no luck. The below code is a mess, mainly because I've been trying things at random without knowing what I should be doing. Anybody have any suggestions? public class OrderItemDTOResolver : ValueResolver<OrderDTO, OrderItem> { protected override OrderItem ResolveCore(OrderDTO source) { if (source.OrderItem == null) { //OrderItem OrderItem = new ProxyGenerator().CreateClassProxy<OrderItem>(); // Castle.Core.Interceptor. //OrderItem OrderItem = new ProxyGenerator().CreateClassProxy<OrderItem>(); //OrderItem.Id = source.OrderItemId; //OrderItem OrderItem = new OrderItem(); //var proxy = new OrderItem() as INHibernateProxy; //var proxy = OrderItem as INHibernateProxy; //return (OrderItem)proxy.HibernateLazyInitializer //ILazyInitializer proxy = new LazyInitializer("OrderItem", OrderItem, source.OrderItemId, null, null, null, null); //return (OrderItem)proxy; //return (OrderItem)proxy.HibernateLazyInitializer.GetImplementation(); //return OrderItem; IProxyTargetAccessor proxy = new Castle.Core.Interceptor. var initializer = new LazyInitializer("OrderItem", typeof(OrderItem), source.OrderItemId, null, null, null, null); //var proxyFactory = new SerializableProxyFactory{Interfaces = Interfaces, TargetSource = initializer, ProxyTargetType = IsClassProxy}; //proxyFactory.AddAdvice(initializer); //object proxyInstance = proxyFactory.GetProxy(); //return (INHibernateProxy) proxyInstance; return null; //OrderItem.Id = source.OrderItemId; //return OrderItem; } else return OrderItemDTO.Unmap(source.OrderItem); } } Thanks, Eric

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  • compressed archive with quick access to individual file

    - by eric.frederich
    I need to come up with a file format for new application I am writing. This file will need to hold a bunch other text files which are mostly text but can be other formats as well. Naturally, a compressed tar file seems to fit the bill. The problem is that I want to be able to retrieve some data from the file very quickly and getting just a particular file from a tar.gz file seems to take longer than it should. I am assumeing that this is because it has to decompress the entire file even though I just want one. When I have just a regular uncompressed tar file I can get that data real quick. Lets say the file I need quickly is called data.dat For example the command... tar -x data.dat -zf myfile.tar.gz ... is what takes a lot longer than I'd like. MP3 files have id3 data and jpeg files have exif data that can be read in quickly without opening the entire file. I would like my data.dat file to be available in a similar way. I was thinking that I could leave it uncompressed and seperate from the rest of the files in myfile.tar.gz I could then create a tar file of data.dat and myfile.tar.gz and then hopefully that data would be able to be retrieved faster because it is at the head of outer tar file and is uncompressed. Does this sound right?... putting a compressed tar inside of a tar file? Basically, my need is to have an archive type of file with quick access to one particular file. Tar does this just fine, but I'd also like to have that data compressed and as soon as I do that, I no longer have quick access. Are there other archive formats that will give me that quick access I need? As a side note, this application will be written in Python. If the solution calls for a re-invention of the wheel with my own binary format I am familiar with C and would have no problem writing the Python module in C. Idealy I'd just use tar, dd, cat, gzip, etc though. Thanks, ~Eric

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  • Building a Mafia&hellip;TechFest Style

    - by David Hoerster
    It’s been a few months since I last blogged (not that I blog much to begin with), but things have been busy.  We all have a lot going on in our lives, but I’ve had one item that has taken up a surprising amount of time – Pittsburgh TechFest 2012.  After the event, I went through some minutes of the first meetings for TechFest, and I started to think about how it all came together.  I think what inspired me the most about TechFest was how people from various technical communities were able to come together and build and promote a common event.  As a result, I wanted to blog about this to show that people from different communities can work together to build something that benefits all communities.  (Hopefully I've got all my facts straight.)  TechFest started as an idea Eric Kepes and myself had when we were planning our next Pittsburgh Code Camp, probably in the summer of 2011.  Our Spring 2011 Code Camp was a little different because we had a great infusion of some folks from the Pittsburgh Agile group (especially with a few speakers from LeanDog).  The line-up was great, but we felt our audience wasn’t as broad as it should have been.  We thought it would be great to somehow attract other user groups around town and have a big, polyglot conference. We started contacting leaders from Pittsburgh’s various user groups.  Eric and I split up the ones that we knew about, and we just started making contacts.  Most of the people we started contacting never heard of us, nor we them.  But we all had one thing in common – we ran user groups who’s primary goal is educating our members to make them better at what they do. Amazingly, and I say this because I wasn’t sure what to expect, we started getting some interest from the various leaders.  One leader, Greg Akins, is, in my opinion, Pittsburgh’s poster boy for the polyglot programmer.  He’s helped us in the past with .NET Code Camps, is a Java developer (and leader in Pittsburgh’s Java User Group), works with Ruby and I’m sure a handful of other languages.  He helped make some e-introductions to other user group leaders, and the whole thing just started to snowball. Once we realized we had enough interest with the user group leaders, we decided to not have a Fall Code Camp and instead focus on this new entity. Flash-forward to October of 2011.  I set up a meeting, with the help of Jeremy Jarrell (Pittsburgh Agile leader) to hold a meeting with the leaders of many of Pittsburgh technical user groups.  We had representatives from 12 technical user groups (Python, JavaScript, Clojure, Ruby, PittAgile, jQuery, PHP, Perl, SQL, .NET, Java and PowerShell) – 14 people.  We likened it to a scene from a Godfather movie where the heads of all the families come together to make some deal.  As a result, the name “TechFest Mafia” was born and kind of stuck. Over the next 7 months or so, we had our starts and stops.  There were moments where I thought this event would not happen either because we wouldn’t have the right mix of topics (was I off there!), or enough people register (OK, I was wrong there, too!) or find an appropriate venue (hmm…wrong there, too) or find enough sponsors to help support the event (wow…not doing so well).  Overall, everything fell into place with a lot of hard work from Eric, Jen, Greg, Jeremy, Sean, Nicholas, Gina and probably a few others that I’m forgetting.  We also had a bit of luck, too.  But in the end, the passion that we had to put together an event that was really about making ourselves better at what we do really paid off. I’ve never been more excited about a project coming together than I have been with Pittsburgh TechFest 2012.  From the moment the first person arrived at the event to the final minutes of my closing remarks (where I almost lost my voice – I ended up being diagnosed with bronchitis the next day!), it was an awesome event.  I’m glad to have been part of bringing something like this to Pittsburgh…and I’m looking forward to Pittsburgh TechFest 2013.  See you there!

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  • Change a dropdown depending on another dropdown

    - by Eric Evans
    I'm trying to create a three select dropdowns that represent a persons birthday. I'm taking into consideration that there are 4 months with 30 days, 7 with 31 ,and 1 with 28 or 29 depending if it's a leap year or not. I would like the days dropdown to show the number of days depending on which month is chosen in the month dropdown. Here's what I have now. Here's the html for the select <!Doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Birthday validation</title> <script src="jquery-1.11.1.min.js"></script> <script src="birthday_drop.js"></script> <link href="style.css" rel="stylesheet /> </head> <body> <h2>Birthday</h2> <fieldset class="birthday-picker"> <select class="birth-month" name="birth[month]"><option>Month</option></select> <select class="birth-day" name="birth[day]"><option>Day</option></select> <select class="birth-year" name="birth[year]"><option>Year</option></select> </fieldset> </body> </html> Here's the jquery that populates the dropdowns and my attempt to use the change function /** * Created by Eric Evans on 8/19/14. */ $(document).ready(function(){ var months = ['January','February','March','April','May','June','July','August','September','October','November','December']; for(i=0; i < months.length; i++){ $("<option value=' + months[i] + '>" + months[i] + "</option>").appendTo('.birth-month'); } for(i=0; i <= 31; i++){ $("<option value=' + i + '>" + i + "</option>").appendTo('.birth-day'); } var myYear = new Date().getFullYear(); for(i=myYear; i >= 1950; i--){ $("<option value=' + i + '>" + i + "</option>").appendTo('.birth-year'); } $('.birth-month').change(function(){ if($(this).val() == 'April'){ for(i=0; i <= 30; i++){ $("<option value=' + i + '>" + i + "</option>").appendTo('.birth-day'); } } }); }); Any help would be greatly appreciated

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  • ASP.NET mvcConf Videos Available

    - by ScottGu
    Earlier this month the ASP.NET MVC developer community held the 2nd annual mvcConf event.  This was a free, online conference focused on ASP.NET MVC – with more than 27 talks that covered a wide variety of ASP.NET MVC topics.  Almost all of the talks were presented by developers within the community, and the quality and topic diversity of the talks was fantastic. Below are links to free recordings of the talks that you can watch (and optionally download): Scott Guthrie Keynote The NuGet-y Goodness of Delivering Packages (Phil Haack) Industrial Strenght NuGet (Andy Wahrenberger) Intro to MVC 3 (John Petersen) Advanced MVC 3 (Brad Wilson) Evolving Practices in Using jQuery and Ajax in ASP.NET MVC Applications (Eric Sowell) Web Matrix (Rob Conery) Improving ASP.NET MVC Application Performance (Steven Smith) Intro to Building Twilio Apps with ASP.NET MVC (John Sheehan) The Big Comparison of ASP.NET MVC View Engines (Shay Friedman) Writing BDD-style Tests for ASP.NET MVC using MSTestContrib (Mitch Denny) BDD in ASP.NET MVC using SpecFlow, WatiN and WatiN Test Helpers (Brandon Satrom) Going Postal - Generating email with View Engines (Andrew Davey) Take some REST with WCF (Glenn Block) MVC Q&A (Jeffrey Palermo) Deploy ASP.NET MVC with No Effort (Troels Thomsen) IIS Express (Vaidy Gopalakrishnan) Putting the V in MVC (Chris Bannon) CQRS and Event Sourcing with MVC 3 (Ashic Mahtab) MVC 3 Extensibility (Roberto Hernandez) MvcScaffolding (Steve Sanderson) Real World Application Development with Mvc3 NHibernate, FluentNHibernate and Castle Windsor (Chris Canal) Building composite web applications with Open frameworks (Sebastien Lambla) Quality Driven Web Acceptance Testing (Amir Barylko) ModelBinding derived types using the DerivedTypeModelBinder in MvcContrib (Steve Hebert) Entity Framework "Code First": Domain Driven CRUD (Chris Zavaleta) Wrap Up with Jon Galloway & Javier Lozano I’d like to say a huge thank you to all of the speakers who presented, and to Javier Lozano, Eric Hexter and Jon Galloway for all their hard work in organizing the event and making it happen. Hope this helps, Scott P.S. I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu

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  • WebLogic Weekly for June 20th, 2011

    - by james.bayer
    Welcome the first the first edition of the WebLogic Weekly.  The WebLogic Server team has been trying to extend our community outreach to new mediums like an Oracle WebLogic Youtube Channel (how-to videos and feature showcases), Twitter (sharing WebLogic links, typically blogs), and a Facebook page to do a better job sharing information, providing learning alternatives to product documentation and perhaps most importantly collecting feedback from all of our users using the tools they prefer.  This is our attempt to provide a round-up what has been going on in WebLogic over the past week.  If you would like to have something shared here, use the #weblogic tag on tweets, post on the Oracle WebLogic facebook page, or comment on these blog entries. Blogs WebLogic Server: Listing Groups of an Authenticated User by Steve Button Weblogic, QBrowser And Topics by Eric Elzinga Weblogic, Topics And (Non)-Durable Subscribers by Eric Elzinga Database Web Service using Toplink DB Provider by Vishal Jain WebLogic Server – Use the Execution Context ID in Applications – Lessons From Hansel and Gretel by James Bayer Getting All Server’s Lifecycle State in a Domain by Jay SenSharma Steps to Move Messages From One Queue To Another Queue Using WLST (Updated Version) by Ravish Mody Events If you want to share a story of something innovative you or your organization has done with WebLogic Server or other Fusion Middleware, you could win a pass to Oracle Open World 2011 and share the story there.  See Ruma Sanyal's posting on the Application Grid blog for details.  The deadline for submissions is July 22nd, 2011.

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  • If I'm a web server, for which accounts can I turn off shells within passwd file?

    - by eric01
    I am making a web server running LAMP and want to access it using SSH. When I open the passwd file, I see all those accounts and I want to know for which ones I can put false. I have the following accounts: root, daemon, bin, sys, sync, games, man, lp, mail, news, uucp, proxy, www-data backup, list, irc, gnats, nobody, libuuid, syslog, messagebus, whoopsie, mandscape, sshd, eric Except root, sshd and eric, which ones should I not disable? How about www-data and sshd? Thanks a lot for your help.

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  • Dutch ACEs SOA Partner Community Award Celebration

    - by JuergenKress
    When you win you need to celebrate. This was the line of thinking when I found out that I was part of a group that won the Oracle SOA Community Country Award. Well – thinking about a party is one thing, preparing it and finally having the small party is something completely different. It starts with finding a date that would be suitable for the majority of invited people. As you can imagine the SOA ACEs and ACE Directors have a busy life, that takes them places. Alongside that they are engaged with customers who want to squeeze every bit of knowledge out of them. So everybody is pretty busy (that’s what makes you an ACE). After some deliberation (and checks of international Oracle events, Trip-it, blogs and tweets) a date was chosen. Meeting on a Friday evening for some drinks is probably not a Dutch-only activity. But as some of the ACEs are self-employed they miss the companies around them to organize such events. Come the day a turn-out of almost 50% was great – although I expected some more folks . This was mainly due to some illness and work overload. Luckily the mini-party got going, (alcoholic) beverages were consumed, food was appreciated, a decent picture was made (see below) and all had a good chat and hopefully a good time. (Above from left to right: Eric Elzinga, Andreas Chatziantoniou, Mike van Aalst, Edwin Biemond) All in all a nice evening and certainly a "meeting" which can be repeated.  For the full article please visit Andreas's blog Want to organize a local SOA & BPM community? Let us know we are more than happy to support you! To receive more information become a member of the SOA & BPM Partner Community please register at http://www.oracle.com/goto/emea/soa (OPN account required) Blog Twitter LinkedIn Mix Forum Technorati Tags: Eric Elzinga,Andreas Chatziantoniou,Mike van Aalst,Edwin Biemond,Dutsch SOA Community,SOA Community,Oracle,OPN,Jürgen Kress,ACE

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  • links for 2010-05-03

    - by Bob Rhubart
    @ORACLENERD: Exadata + The Hartford Oracle ACE Chet "ORACLENERD" Justice went digging for information on Oracle Exadata, and shares the results. (tags: oracle otn oracleace hardware database exadata) @myfear: About the Java EE 6 Web Profile and the Future "If you look at the new web profile in more detail, you see that it is a specified minimal configuration targeted for small footprint servers that should support something called 'typical' web applications. It is thought of as a minimal specification, so a vendor is free to add additional services in their concrete implementation." -- Oracle ACE Director Markus Eisele (tags: oracle otn oracleace java) Edwin Biemond: WSM in FMW 11g Patch Set 2 and OSB 11g Oracle ACE Edwin Biemond of Whitehorses takes a look at the security aspects of Oracle Fusion Middleware and Oracle Service Bus 11g. (tags: oracle otn oracleace fusionmiddleware servicebus osb) James Taylor: Installing SOA Suite 11.1.1.3 James Taylor documents his attempt to implement a complete SOA Environment with SOA Suite, BPM and OSB on the WLS infrastructure. (tags: oracle otn soa soasuite fusionmiddleware) Eric Elzinga: Oracle Service Bus 11g Installation Eric Elzinga illustrates the Oracle Service Bus 11g installation process. (tags: otn oracle soa esb)

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  • GWB | 30 in 60 Update &ndash; Enrique is almost there!

    - by Staff of Geeks
    We are very close to having our first blogger to reach 30 posts, Enrique Lima.  Stuart Brierley is over the hump with 16 posts and Dave Campbell and Eric Nelson are definitely in the running.  If you don’t know what I am talking about, we are running a contest for our bloggers.  Anyone who blogs on Geekswithblogs who creates 30 posts from May 15th to July 13th will receive a custom Geekswithblogs.net t-shirt with their URL on the back.  This could be their Geekswithblogs.net address or their custom domain.  It is definitely not too late to get started and with TechEd or WWDC right around the corner, there is definitely a lot to talk about. Current Standings: Enrique Lima (28 posts) - http://geekswithblogs.net/enriquelima StuartBrierley (16 posts) - http://geekswithblogs.net/StuartBrierley Dave Campbell (12 posts) - http://geekswithblogs.net/WynApseTechnicalMusings Eric Nelson (10 posts) - http://geekswithblogs.net/iupdateable Christopher House (10 posts) - http://geekswithblogs.net/13DaysaWeek mbcrump (7 posts) - http://geekswithblogs.net/mbcrump Chris Williams (6 posts) - http://geekswithblogs.net/cwilliams Michael Stephenson (5 posts) - http://geekswithblogs.net/michaelstephenson Steve Michelotti (5 posts) - http://geekswithblogs.net/michelotti Liam McLennan (5 posts) - http://geekswithblogs.net/liammclennan Follow Us On Twitter: @StaffOfGeeks Technorati Tags: Geekswithblogs,30 in 60,Standings

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  • ArchBeat Link-o-Rama for 11/16/2011

    - by Bob Rhubart
    Size, Failure, and Optimization | Roger Sessions The slide deck from Roger Sessions' keynote address at the 2nd IT Architect Regional Conference in Bogota, Colombia. Webcast: Oracle Business Intelligence Mobile Event Date: Tuesday, November 29, 2011 Time: 9 a.m. PT/12 noon ET Featuring Manan Goel (Director BI Product Marketing, Oracle) and Shailesh Shedge (Director BI & Analytics Practice, Ascentt). Live Webinar: Solutions for MySQL High Availability (November 29) Tune into this webcast to learn how MySQL’s High Availability solution can help you minimize downtime and ensure business continuity. Domain-Driven Design: Useful Models for Complex Problems | @ericevans0 Domain-Driven Design: Useful Models for Complex Problems | Eric Evans Eric Evans' slide deck from the recent IASA event in Spain. Oracle Hardware goes social Introducing the Oracle Hardware Social Media Hub -- The new Facebook meeting place for the global hardware community. The hub now features a pioneering Q&A app called Oracle Ask the Expert, where you can ask questions and engage with Oracle experts. Review: WebLogic Server 11g Administration Handbook by S. Alapati Dr. Frank Munz, author of "Middleware and Cloud Computing, reviews the new WebLogic book by Sam Alapati and offers a quick overview of a couple of other new titles. SOA All the Time; Architects in AZ; Clearing Info Integration hurdles This week on the Architect Home Page on OTN.

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  • On developing deep programming knowledge

    - by Robert Harvey
    Occasionally I see questions about edge cases and other weirdness on Stack Overflow that are easily answered by the likes of Jon Skeet and Eric Lippert, demonstrating a deep knowledge of the language and its many intricacies, like this one: You might think that in order to use a foreach loop, the collection you are iterating over must implement IEnumerable or IEnumerable<T>. But as it turns out, that is not actually a requirement. What is required is that the type of the collection must have a public method called GetEnumerator, and that must return some type that has a public property getter called Current and a public method MoveNext that returns a bool. If the compiler can determine that all of those requirements are met then the code is generated to use those methods. Only if those requirements are not met do we check to see if the object implements IEnumerable or IEnumerable<T>. That's cool stuff to know. I can understand why Eric knows this; he's on the compiler team, so he has to know. But what about those who demonstrate such deep knowledge who are not insiders? How do mere mortals (who are not on the C# compiler team) find out about stuff like this? Specifically, are there methods these folks use to systematically root out such knowledge, explore it and internalize it (make it their own)?

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  • Watchguard Firewall WebBlocker Regular Expression for Multiple Domains?

    - by Eric
    I'm pretty sure this is really a regex question, so you can skip to REGEX QUESTION if you want to skip the background. Our primary firewall is a Watchguard X750e running Fireware XTM v11.2. We're using webblocker to block most of the categories, and I'm allowing needed sites as they arise. Some sites are simple to add as exceptions, like Pandora radio. That one is just a pattern matched exception with "padnora.com/" as the pattern. All traffic from anywhere on pandora.com is allowed. I'm running into trouble on more sophisticated domains that reference content off of their base domains. We'll take GrooveShark as a sample. If you go to http://grooveshark.com/ and view page source, you'll see hrefs referring to gs-cdn.net as well as grooveshar.com. So adding a WebBlocker exception to grooveshark.com/ is not effective, and I have to add a second rule allowing gs-cdn.net/ as well. I see that the WebBlocker allows regex rules, so what I'd like to do in situations like this is create a single regex rule that allows traffic to all the needed domains. REGEX QUESTION: I'd like to try a regex that matches grooveshark.com/ and gs-cdn.net/. If anybody can help me write that regex, I'd appreciate it. Here is what is in the WatchGuard documentation from that section: Regular expression Regular expression matches use a Perl-compatible regular expression to make a match. For example, .[onc][eor][gtm] matches .org, .net, .com, or any other three-letter combination of one letter from each bracket, in order. Be sure to drop the leading “http://” Supports wild cards used in shell script. For example, the expression “(www)?.watchguard.[com|org|net]” will match URL paths including www.watchguard.com, www.watchguard.net, and www.watchguard.org. Thanks all!

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