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  • What is the correct way to use Chef-server's 'validation key'?

    - by Socio
    It seems to me that the recommended way of adding clients to a chef server - or my understanding of it - is flawed. from the docs: When the chef-client runs, it checks if it has a client key. If the client key does not exist, it then attempts to "borrow" the validation client's identity to register itself with the server. In order to do that, the validation client's private key needs to be copied to the host and placed in /etc/chef/validation.pem. So the "validation key" is basically the superuser credential, allowing anyone who possesses it full access to the chef server? Am I reading this right? Surely the correct model would be for clients to generate their own keypair, and submit the public key to the chef server. Clients should never need access to this superuser "validation key". How can I do it in this, more secure, manner?

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  • Using external monitor and screen resolution?

    - by Johnydep
    it might sound very basic question but i need some help. I have lenovo Ideapad y560p which offers a maximum resolution of 1366px x 768px. Now i am planning to buy an external monitor, and i short listed some FULL HD resolution monitors, but it is my understanding that even with FULL HD, i would only achieve the best resolution my laptop supports. Is it true? And also if this is the case, should i really go for an HD monitor or settle down with a lower resolution version? 2ndly, is there any way to increase resolution with simple upgrade? or it is not possible without voiding the warranty??

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  • How is an array stored in memory?

    - by George
    In an interest to delve deeper into how memory is allocated and stored, I have written an application that can scan memory address space, find a value, and write out a new value. I developed a sample application with the end goal to be able to programatically locate my array, and overwrite it with a new sequence of numbers. In this situation, I created a single dimensional array, with 5 elements, e.g. int[] array = new int[] {8,7,6,5,4}; I ran my application and searched for a sequence of the five numbers above. I was looking for any value that fell between 4 and 8, for a total of 5 numbers in a row. Unforuntately, my the sequential numbers in my array matched hundreds of results, as the numbers 4 through 8, in no particular sequence happened to be next to each other, in memory, in many situations. Is there any way to distinguish that a set of numbers within memory, represents an array, not simply integers that are next to each other? Is there any way of knowing that if I find a certain value, that the matching values proceeding it are that of an array? I would assume that when I declare int[] array, its pointing at the first address of my array, which would provide some kind of meta-data to what existed in the array, e.g. 0x123456789 meta-data, 5 - 32 bit integers 0x123456789 + 32 "8" 0x123456789 + 64 "7" 0x123456789 + 96 "6" 0x123456789 + 128 "5" 0x123456789 + 160 "4" Am I way off base?

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  • svn copy causes "...(403 Forbidden) in reponse to PROPFIND", other actions work

    - by Hops
    Just for a short bit of background, the reason I'm tracking this particular subversion oddity down is because I found it troubleshooting our new Maven setup (specifically the release plugin). release:prepare gives me the same error buried in a stack trace. Executing this command... svn copy http://[server]/svn/tran1/myproject/trunk http://[server]/svn/tran1/myproject/tags/testtag ...gives me the following error: svn: Server sent unexpected return value (403 Forbidden) in response to PROPFIND request for '/svn/tran1' I thought this might be an authentication issue, but I'm able to do pretty much every other subversion thing I can think of. Checkout, add, commit and update all work from the command line. And here's where it gets really weird... I can create branches using Eclipse's Subclipse plugin. This might not be all that strange if Eclipse isn't actually doing an svn copy. tran1 also has a sibling subversion repository next to it. The copy command works fine there. The URL it's trying to get permission for also looks wrong. It's asking about /svn/tran1, when the permissions are set up one level deeper /svn/tran1/myproject/ Any ideas what might be causing my error? Thanks.

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  • Iterating Through N Level Children

    - by bobber205
    This seems like something neat that might be "built into" jQuery but I think it's still worth asking. I have a problem where that can easily be solved by iterating through all the children of a element. I've recently discovered I need to account for the cases where I would need to do a level or two deeper than the "1 level" (just calling .children() once) I am currently doing. jQuery.each(divToLookAt.children(), function(index, element) { //do stuff } ); This is what I'm current doing. To go a second layer deep, I run another loop after doing stuff code for each element. jQuery.each(divToLookAt.children(), function(index, element) { //do stuff jQuery.each(jQuery(element).children(), function(indexLevelTwo, elementLevelTwo) { //do stuff } ); } ); If I want to go yet another level deep, I have to do this all over again. This is clearly not good. I'd love to declare a "level" variable and then have it all take care of. Anyone have any ideas for a clean efficient jQueryish solution? Thanks!

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  • recvfrom() return values in Stop-and-Wait UDP?

    - by mavErick
    I am trying to implement a Stop-and-Wait UDP client-server socket program in C. As known, there are basically three possible scenarios for Stop-and-Wait flow control. i.e., After transmitting a packet, the sender receives a correct ACK and thus starts transmitting the next packet; the sender receives an incorrect ACK and thus retransmits this packet; the sender receives no ACK within a TIMEOUT and thus retransmits this packet. My idea is to differentiate these three scenarios with the return value of recvfrom() on the sender side. For scenario 1&2: recvfrom() just returns the length of the received ACK. Since in my implementation the incorrect ACK is of the same length of the correct one, so I will have to go deeper and check the contents of the ACK. It's not a big deal. I know how to do. Problems come when I am trying to recognize scenario 3 where no ACK is received. What confuses me is that my recvfrom() is within a while loop, so the recvfrom() will be called constantly. What will it return when the receiver is not actually sending the sender ACK? Is it 0 or 1?

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  • How Social Is Your Contact Center?

    - by Charles Knapp
    More than 75% of consumers have complained on a social site after a poor customer experience. Yet, 70% of companies have little understanding of the social media conversations about their brand. To deliver upon your brand promise, retain customers, and increase their lifetime value, you must deliver great customer experiences across social, mobile, phone, and chat channels. Siloed channels produce poor customer experiences. Social channels must integrate with the people, processes, technology, and traditional channels used to satisfy customers. The more effective a company’s social marketing, the greater the demand for effective social service. However, service is not a job for social marketers. It is a job for service specialists, focused on KPIs such as response time, first contact resolution, satisfaction, churn, retention, and customer lifetime value. Most social-enabled contact centers are at the early adopter stage, attempting to “bolt on” social media as a side process. Many are experiencing inconsistent customer experiences, higher costs, and negligible return on investments. Service leaders should consider carefully how to integrate social channels with their current customer service and support people, processes, technology, and channels. Here is one company realizing success: the pre-integrated Oracle RightNow Social Experience “empowers our contact center operations by enabling our agents to join customer conversations that are happening on social sites like Twitter and Facebook and integrate those conversations into our overall multichannel customer engagement processes.” — Lisa Larson, Drugstore.com

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  • SQL SERVER – Four Posts on Removing the Bookmark Lookup – Key Lookup

    - by pinaldave
    In recent times I have observed that not many people have proper understanding of what is bookmark lookup or key lookup. Increasing numbers of the questions tells me that this is something developers are encountering every single day but have no idea how to deal with it. I have previously written three articles on this subject. I want to point all of you looking for further information on the same post. SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lookup SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lookup – Part 2 SQL SERVER – Query Optimization – Remove Bookmark Lookup – Remove RID Lookup – Remove Key Lookup – Part 3 SQL SERVER – Interesting Observation – Execution Plan and Results of Aggregate Concatenation Queries In one of my recent class we had in depth conversation about what are the alternative of creating covering indexes to remove the bookmark lookup. I really want to this question open to all of you and see what community thinks about the same. Is there any other way then creating covering index or included index to remove his expensive keylookup? Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Backup and Restore, SQL Index, SQL Optimization, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQLAuthority News, SQLServer, T SQL, Technology

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  • Apple iPhone 4S Launch In India On Nov 25

    - by Gopinath
    Aircel, one of the leading wireless mobile services provider of India has just announced that iPhone 4S will be available to its customers on November 25. You can start pre-booking the phone from November 18 through Aircel website or walking into an Aircel showroom near you. My multiple calls to Aircel customer care division were no use to get the details on the price information. Three times the call got disconnected before a customer care executive tried fetching the details on price and models. We hear from BGR India blog that iPhone 4S price is going start at Rs. 40,000 for a 16GB model and may go up to Rs. 50,000 for a 64 GB model. Airtel, another leading mobile service provider in India, who sells iPhone in India is not sure when they are going to start offering iPhone 4S to its customer. I reached customer care regarding the iPhone 4S and they don’t have any details to offer at the moment. It’s good to see Apple releasing iPhone 4S to India markets just after couple of months of International release. Apple was earlier criticized for releasing iPhone 2, iPhone 3G in India almost an year after the international launch while companies like Nokia release their flagship models just after weeks of international launch. One of the most sought after feature of iPhone 4S is Siri and my friends in US told that it works amazingly good. Siri does not have any problem in understanding Indian English accent and it is very good at recognizing the Indian names in contacts list. But at the same time we do hear reports that Siri does not help much if it’s used outside USA. Considering that Siri is a software it should be possible for Apple to improve it to work better outside USA. But who know the priorities of Apple! This article titled,Apple iPhone 4S Launch In India On Nov 25, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • Why do programmers use or recommend Mac OS X?

    - by codingbear
    I've worked on both Mac and Windows for awhile. However, I'm still having a hard time understanding why programmers enthusiastically choose Mac OS X over Windows and Linux? I know that there are programmers who prefer Windows and Linux, but I'm asking the programmers who would just use Mac OS X and nothing else, because they think Mac OS X is the greatest fit for programmers. Some might argue that Mac OS X got the beautiful UI and is nix based, but Linux can do that. Although Windows is not nix based, you can pretty much develop on any platform or language, except Cocoa/Objective-C. Is it the softwares that offer only on Mac OS X? Does that really worth using Mac? Is it to develop iPhone apps? Is it because you need to buy new Windows every 2 years (less backwards compatible)? I understand why people, who are working in multimedia/entertainment industry, would use Mac OS X; however, I don't have strong merits of Mac OS X over Windows. If you develop daily on Mac and prefer Mac over anything else, can you give me a merit that Mac has over Windows/Linux? Maybe something you can do on Mac that cannot be done in Windows/Linux with the same level of ease? I'm not trying to do another Mac vs. Windows here. I tried to find things that I do on Mac that cannot be done on Windows with the same level of ease, but I couldn't. So, I'm asking for some help.

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  • SQLAuthority News – Three Posts on Reporting – T-SQL Tuesday #005

    - by pinaldave
    If you are following my blog, you already know that I am more of “T-SQL and Performance Tuning” type of person. I do have a good understanding of Business Intelligence suit and I also do certain training sessions on the same subject. When I was writing the blog post for T-SQL Tuesday #005 – Reporting, I realized that I have written a post that clearly explains how to generate reports using SQL Server Management Studio. Here is a quick recap on how one can use SSMS and out-of-the-box reports which can help many developers. Please note that they can be resource-intensive as well, so please use SSMS carefully. SQL SERVER – Generate Report for Index Physical Statistics – SSMS SQL SERVER – Out of the Box – Activity and Performance Reports from SSSMS SQL SERVER – Configure Management Data Collection in Quick Steps – T-SQL Tuesday #005 Junior developers and DBA can use these reports right away and can also start learning and exploring most database performance issues with the help of Sr. DBAs. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Server Management Studio, SQL Tips and Tricks, T SQL, Technology Tagged: SQL Reporting, SQL Reports

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  • Web Matrix released

    - by TATWORTH
    Microsoft have now released Web Matrix (and ASP.NET MVC3 if you so inclined!) One signifcant utility is IIS Express which will replace Cassini It is worth noting that SP1 for VS2010 should be out in Q1. Links: http://www.hanselman.com/blog/ASPNETMVC3WebMatrixNuGetIISExpressAndOrchardReleasedTheMicrosoftJanuaryWebReleaseInContext.aspx http://www.hanselman.com/blog/LinkRollupNewDocumentationAndTutorialsFromWebPlatformAndTools.aspx http://arstechnica.com/microsoft/news/2011/01/microsoft-releases-free-webmatrix-web-development-tool.ars I am impressed by the copious tutorials on MVC, which I include below: Intro to ASP.NET MVC 3 onboarding series. Scott Hanselman and Rick Anderson collaboration and Mike Pope (Editor) Both C# and VB versions: Intro to ASP.NET MVC 3 Adding a Controller Adding a View Entity Framework Code-First Development Accessing your Model's Data from a Controller Adding a Create Method and Create View Adding Validation to the Model Adding a New Field to the Movie Model and Table Implementing Edit, Details and Delete Source code for this series MVC 3 Updated and new tutorials/ API Reference on MSDN Rick Anderson (Lead Programming Writer), Keith Newman and Mike Pope (Editor) ASP.NET MVC 3 Content Map ASP.NET MVC Overview MVC Framework and Application Structure Understanding MVC Application Execution Compatibility of ASP.NET Web Forms and MVC Walkthrough: Creating a Basic ASP.NET MVC Project Walkthrough: Using Forms Authentication in ASP.NET MVC Controllers and Action Methods in ASP.NET MVC Applications Using an Asynchronous Controller in ASP.NET MVC Views and UI Rendering in ASP.NET MVC Applications Rendering a Form Using HTML Helpers Passing Data in an ASP.NET MVC Application Walkthrough: Using Templated Helpers to Display Data in ASP.NET MVC Creating an ASP.NET MVC View by Calling Multiple Actions Models and Validation in ASP.NET MVC How to: Validate Model Data Using DataAnnotations Attributes Walkthrough: Using MVC View Templates How to: Implement Remote Validation in ASP.NET MVC Walkthrough: Adding AJAX Scripting Walkthrough: Organizing an Application using Areas Filtering in ASP.NET MVC Creating Custom Action Filters How to: Create a Custom Action Filter Unit Testing in ASP.NET MVC Applications Walkthrough: Using TDD with ASP.NET MVC How to: Add a Custom ASP.NET MVC Test Framework in Visual Studio ASP.NET MVC 3 Reference System.Web.Mvc System.Web.Mvc.Ajax System.Web.Mvc.Async System.Web.Mvc.Html System.Web.Mvc.Razor

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  • NDepend tool – Why every developer working with Visual Studio.NET must try it!

    - by hajan
    In the past two months, I have had a chance to test the capabilities and features of the amazing NDepend tool designed to help you make your .NET code better, more beautiful and achieve high code quality. In other words, this tool will definitely help you harmonize your code. I mean, you’ve probably heard about Chaos Theory. Experienced developers and architects are already advocates of the programming chaos that happens when working with complex project architecture, the matrix of relationships between objects which simply even if you are the one who have written all that code, you know how hard is to visualize everything what does the code do. When the application get more and more complex, you will start missing a lot of details in your code… NDepend will help you visualize all the details on a clever way that will help you make smart moves to make your code better. The NDepend tool supports many features, such as: Code Query Language – which will help you write custom rules and query your own code! Imagine, you want to find all your methods which have more than 100 lines of code :)! That’s something simple! However, I will dig much deeper in one of my next blogs which I’m going to dedicate to the NDepend’s CQL (Code Query Language) Architecture Visualization – You are an architect and want to visualize your application’s architecture? I’m thinking how many architects will be really surprised from their architectures since NDepend shows your whole architecture showing each piece of it. NDepend will show you how your code is structured. It shows the architecture in graphs, but if you have very complex architecture, you can see it in Dependency Matrix which is more suited to display large architecture Code Metrics – Using NDepend’s panel, you can see the code base according to Code Metrics. You can do some additional filtering, like selecting the top code elements ordered by their current code metric value. You can use the CQL language for this purpose too. Smart Search – NDepend has great searching ability, which is again based on the CQL (Code Query Language). However, you have some options to search using dropdown lists and text boxes and it will generate the appropriate CQL code on fly. Moreover, you can modify the CQL code if you want it to fit some more advanced searching tasks. Compare Builds and Code Difference – NDepend will also help you compare previous versions of your code with the current one at one of the most clever ways I’ve seen till now. Create Custom Rules – using CQL you can create custom rules and let NDepend warn you on each build if you break a rule Reporting – NDepend can automatically generate reports with detailed stats, graph representation, dependency matrixes and some additional advanced reporting features that will simply explain you everything related to your application’s code, architecture and what you’ve done. And that’s not all. As I’ve seen, there are many other features that NDepend supports. I will dig more in the upcoming days and will blog more about it. The team who built the NDepend have also created good documentation, which you can find on the NDepend website. On their website, you can also find some good videos that will help you get started quite fast. It’s easy to install and what is very important it is fully integrated with Visual Studio. To get you started, you can watch the following Getting Started Online Demo and Tutorial with explanations and screenshots. If you are interested to know more about how to use the features of this tool, either visit their website or wait for my next blogs where I will show some real examples of using the tool and how it helps make your code better. And the last thing for this blog, I would like to copy one sentence from the NDepend’s home page which says: ‘Hence the software design becomes concrete, code reviews are effective, large refactoring are easy and evolution is mastered.’ Website: www.ndepend.com Getting Started: http://www.ndepend.com/GettingStarted.aspx Features: http://www.ndepend.com/Features.aspx Download: http://www.ndepend.com/NDependDownload.aspx Hope you like it! Please do let me know your feedback by providing comments to my blog post. Kind Regards, Hajan

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  • Wireless doesn't work on a Lenovo V570

    - by Stephen
    I've had Ubuntu installed on my HD for about 3 months but ever since I ran into this wireless issue I kinda lost my lust of Ubuntu. I have zero experience getting around with/ using the console command. I have a Lenovo V570. I got the driver update for the broadcom networking card via the Additional Drivers application but that did nothing. I love the look and feel of using Ubuntu but I have no technological experience for the matter. Any help would be awesome. When I scan for wireless connections while in Ubuntu, my computer picks up nothing, while on Win7 it will pick up the handful of wireless networks around my area. My wired connection is fine, but the use of not having wireless on a laptop is rather contradictory to it as a feature. Cheers! Also, I just installed 11.10, if that helps any. Yes, I used the search before I posted this, but again I have ZERO understanding of the command stuff and need a meat and potatoes answer(s). stephen@ubuntu:~$ sudo lshw -class network [sudo] password for stephen: *-network UNCLAIMED description: Network controller product: BCM4313 802.11b/g/n Wireless LAN Controller vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:03:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:f1900000-f1903fff *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:04:00.0 logical name: eth0 version: 06 serial: f0:de:f1:63:98:14 size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.1.78 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: irq:41 ioport:2000(size=256) memory:f1804000-f1804fff memory:f1800000-f1803fff stephen@ubuntu:~$ rfkill list all 0: ideapad_wlan: Wireless LAN Soft blocked: yes Hard blocked: no 1: acer-wireless: Wireless LAN Soft blocked: yes Hard blocked: no

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  • HTML5 Semantics - H1 or H2 for ARTICLE titles in a SECTION

    - by Matt
    It's my understanding (based from this chapter of Dive into HTML5: http://goo.gl/9zliD) that it can be considered semantically appropriate to use H1 tags in multiple areas of the page, as a method of setting the most important title for that particular content. If I'm using this methodology, and I have a SECTION which I've assigned an H1 of 'Articles', should I use H1 or H2 to define the titles for ARTICLEs in that SECTION? This is a bit confusing to me as the article titles are the most important heading for their ARTICLE, but are also 'children' of the SECTION's title. Example code: <section class="article-list"> <header> <h1>Articles</h1> </header> <article> <header> <h2>Article Title</h2> <time datetime="201-02-01">Today</time> </header> <p>Article text...</p> </article> <article> <header> <h2>Article Title</h2> <time datetime="2011-01-31">Yesterday</time> </header> <p>Article text...</p> </article> <article> <header> <h2>Article Title</h2> <time datetime="2011-01-30">The Day Before Yesterday</time> </header> <p>Article text...</p> </article> </section>

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  • Learning HTML5 - Sample Sites

    - by Albers
    Part of the challenge with HTML5 is understanding the range of different technologies and finding good samples. The following are some of the sites I have found most useful. IE TestDrive http://ie.microsoft.com/testdrive/ A good set of demos using touch, appcache, IndexDB, etc. Some of these only work with IE10. Be sure to click the "More Demos" link at the bottom for a longer list of Demos in a nicely organized list form. Chrome Experiments http://www.chromeexperiments.com/ Chrome browser-oriented sumbitted sites with a heavy emphasis on display technologies (WebGL & Canvas) Adobe Expressive Web http://beta.theexpressiveweb.com/ Adobe provides a dozen HTML5 & CSS3 samples. I seem to end up playing the "Breakout" style Canvas demo every time I visit the site. Mozilla Demo Studio https://developer.mozilla.org/en-US/demos/tag/tech:html5/ About 100 varied HTML5-related submitted web sites. If you click the "Browse By Technology" button there are other samples for File API, IndexedDB, etc. Introducing HTML5 samples http://html5demos.com/ Specific Tech examples related to the "Introducing HTML5" book by Bruce Lawson & Remy Sharp HTML5 Gallery http://html5gallery.com/ HTML5 Gallery focuses on "real" sites - sites that were not specifically intended to showcase a particular HTML5 feature. The actual use of HTML5 tech can vary from link to link, but it is useful to see real-world uses. FaceBook Developers HTML5 Showcase http://developers.facebook.com/html5/showcase/ A good list of high profile HTML5 applications, games and demos (including the Financial Times, GMail, Kindle web reader, and Pirates Love Daisies). HTML5 Studio http://studio.html5rocks.com/ Another Google site - currently 14 samples of concepts like slideshows, Geolocation, and WebGL using HTML5.

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  • Frederick .NET User Group April 2010 Meeting

    - by John Blumenauer
    FredNUG is pleased to announce that we have an excellent speaker lined up for April.  On April 20th, we’ll start with pizza and social networking at 6:30 PM.  Then, starting at 7 PM, Dane Morgridge will present “Getting Started with Entity Framework 4” The scheduled agenda is:   6:30 PM - 7:00 PM - Pizza/Social Networking/Announcements 7:00 PM - 8:30 PM - Main Topic: Getting Started with Entity Framework 4 with Dane Morgridge  Main Topic Description:  Getting Started with Entity Framework 4 With .Net 3.5 Microsoft release Linq to Sql and with .Net 3.5 SP1 came the Entity Framework, both powerful ORM tools leveraging Linq technology.   Entity Framework v1, while usable, was definitely lacking some important features and the Entity Framework team delivered with version 4 coming with Visual Studio 2010.  In this session we will look at Entity Framework 4 from the ground level and you will get a solid understanding of it basic principles.  We will also go through all of the new features in Entity Framework 4 and see how far it’s come since the initial release.  If you’ve never taken a look at Entity Framework, now is the time as version 4 is the real deal. Speaker Bio: Dane Morgridge has been a developer for 9+ years and has worked with .Net & C# since the first public beta. His current passions are Entity Framework, WPF, WCF, Silverlight and LINQ. He works mostly with C#, but is also a big fan of whatever new technology he happens to come across. In addition to software development, he is the host of the Community Megaphone Podcast and also enjoys dabbling in graphic design, video special effects and hockey. When not with his family he is usually learning some new technology or working on some side projects. He is currently working as the Development Manager & Architect at Roska Direct in Montgomeryville, PA.  He can be reached through is blog http://geekswithblogs.net/danemorgridge or on Twitter @danemorgridge.  8:30 PM - 8:45 PM – RAFFLE! Please join us and get involved in our .NET developers community!

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  • Web application development over C++ development..

    - by learnerforever
    Hi, I am CS undergrad and CS grad. In college I used to program in C/C++/java and have pretty much stuck to the same skill set in industry with 3 years experience. I like thinking,reading,applying logic etc, designing data structures, but I have little patience with debugging large C++ code. And having to deal with low level stuff like memory fault,memory corruption,compilation/linking issues. My confidence in programming is getting down due to this, but I like being in technical field. Does web application development like LAMP suit (Linux,apache,mysql,php),CSS,scripting (AMONG OTHER WEB DEVELOPMENT RELATED SKILLS) etc need lesser patience with debugging,and understanding of low level stuff, but your analysis/logical skills also get used? Also opportunities in web application development look more. Things like scalability, most of the stuff that Google does fascinates me, but for patience needed for dealing with C++ debugging. I make blunders while coding. How does the field look like outside C++? I am beginning to wonder if as a female, by moving to web application development, I can better manage work life balance. I have seen relatively lesser females in C++ than in Java/.net. Not very sure about web related stuff though. Also, what are the other hot technologies being used in web application development? lamp,css is something I know vaguely. Not in touch with keywords going on in this area. Please help!!.

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  • Why do programmers use or recommend Mac OS X? [closed]

    - by codingbear
    I've worked on both Mac and Windows for awhile. However, I'm still having a hard time understanding why programmers enthusiastically choose Mac OS X over Windows and Linux? I know that there are programmers who prefer Windows and Linux, but I'm asking the programmers who would just use Mac OS X and nothing else, because they think Mac OS X is the greatest fit for programmers. Some might argue that Mac OS X got the beautiful UI and is nix based, but Linux can do that. Although Windows is not nix based, you can pretty much develop on any platform or language, except Cocoa/Objective-C. Is it the softwares that offer only on Mac OS X? Does that really worth using Mac? Is it to develop iPhone apps? Is it because you need to buy new Windows every 2 years (less backwards compatible)? I understand why people, who are working in multimedia/entertainment industry, would use Mac OS X; however, I don't have strong merits of Mac OS X over Windows. If you develop daily on Mac and prefer Mac over anything else, can you give me a merit that Mac has over Windows/Linux? Maybe something you can do on Mac that cannot be done in Windows/Linux with the same level of ease? I'm not trying to do another Mac vs. Windows here. I tried to find things that I do on Mac that cannot be done on Windows with the same level of ease, but I couldn't. So, I'm asking for some help.

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  • Polygonal Triangulation - algorithm with O(n log n) complexity

    - by Arthur Wulf White
    I wish to triangulate a polygon I only have the outline of (p0, p1, p2 ... pn) like described in this question: polygon triangulation algorithm and this webpage: http://cgm.cs.mcgill.ca/~godfried/teaching/cg-projects/97/Ian/algorithm2.html I do not wish to learn the subject and have a deep understanding of it at the moment. I only want to see an effective algorithm that can be used out of the box. The one described in the site seems to be of somewhat high complexity O(n) for finding one ear. I heard this could be done in O(n log n) time. Is there any well known easy to use algorithm that I can translate port to use in my engine that runs with somewhat reasonable complexity? The reason I need to triangulate is that I wish to feel out a 2d-outline and render it 3d. Much like we fill out a 2d-outline in paint. I could use sprites. This would not serve cause I am planning to play with the resulting model on the z-axis, giving it different heights in the different areas. I would love to try the books that were mentioned, although I suspect that is not the answer most readers are hoping for when they read this Q & A format. Mostly I like to see a code snippet I can cut and paste with some modifications and start running.

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  • Step by Step Install of MAAS and JUJU

    - by John S
    I am working on understanding the pieces that I am missing in being able to deploy Juju across the other MAAS nodes. I don't know If I have a step out of place, or missing a few. The server owns the router which handles the DHCP and DNS. Any assistance is greatly appreciated. When I am at the end I will either get a 409 error, or arbitrary pick tools 1.16.0 error. It is worth mentioning that local, and aws works fine. Hopefully with all of these steps spelled out it will help someone else along the way too. Steps Setting Up MAAS and JUJU - 12.04 LTS Clean install SSH only from the package selection during install sudo apt-get install software-properties-common sudo apt-get install python-software-properties sudo add-apt-repository ppa:maas-maintainers/stable sudo add-apt-repository ppa:juju/stable sudo apt-get update sudo apt-get dist-upgrade sudo reboot sudo apt-get install maas maas-dns maas-dhcp sudo ufw disable sudo reboot - edit /etc/dhcp/dhcpd.conf authoritive subnet 10.0.0.0 netmask 255.255.255.0 { next-server 10.0.0.2; filename "pxelinux.0"; } sudo maas createsuperuser sudo maas-import-pxe-files Login to MAAS http://10.x.x.x/MAAS cluster controller configuration for eth0 manage dhcp and dns IP 10.0.0.2 subnet 255.255.255.0 broadcast 10.0.0.0 routerip 10.0.0.1 ip low 10.0.0.5 ip high 10.0.0.180 Commissioning default and distro is set at 12.04 default domain is at local sudo maas-cli login maas http://10.x.x.x/MAAS/api/1.0 api-key ssh-keygen -t rsa -b 2048 - enter - no password - cat id_rsa.pub and enter key into MAAS ssh sudo maas-cli maas nodes accept-all (interestingly enough I only get back [] when executing this ) PXE one machine, accept and commision, start and deploy. sudo apt-get install juju-core juju-local MAAS config: maas: type: maas maas-server: '://10.x.x.x:80/MAAS' maas-oauth: 'MAAS_API_KEY' admin-secret: 'nothing' default-series: 'precise' juju switch maas sudo juju bootstrap --show-log

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  • SQL SERVER – sp_describe_first_result_set New System Stored Procedure in SQL Server 2012

    - by pinaldave
    I might have said this earlier many times but I will say it again – SQL Server never stops to amaze me. Here is the example of it sp_describe_first_result_set. I stumbled upon it when I was looking for something else on BOL. This new system stored procedure did attract me to experiment with it. This SP does exactly what its names suggests – describes the first result set. Let us see very simple example of the same. Please note that this will work on only SQL Server 2012. EXEC sp_describe_first_result_set N'SELECT * FROM AdventureWorks.Sales.SalesOrderDetail', NULL, 1 GO Here is the partial resultset. Now let us take this simple example to next level and learn one more interesting detail about this function. First I will be creating a view and then we will use the same procedure over the view. USE AdventureWorks GO CREATE VIEW dbo.MyView AS SELECT [SalesOrderID] soi_v ,[SalesOrderDetailID] sodi_v ,[CarrierTrackingNumber] stn_v FROM [Sales].[SalesOrderDetail] GO Now let us execute above stored procedure with various options. You can notice I am changing the very last parameter which I am passing to the stored procedure.This option is known as for browse_information_mode. EXEC sp_describe_first_result_set N'SELECT soi_v soi, sodi_v sodi, stn_v stn FROM MyView', NULL, 0; GO EXEC sp_describe_first_result_set N'SELECT soi_v soi, sodi_v sodi, stn_v stn FROM MyView', NULL, 1; GO EXEC sp_describe_first_result_set N'SELECT soi_v soi, sodi_v sodi, stn_v stn FROM MyView', NULL, 2; GO Here is result of all the three queries together in single image for easier understanding regarding their difference. You can see that when BrowseMode is set to 1 the resultset describes the details of the original source database, schema as well source table. When BrowseMode is set to 2 the resulset describes the details of the view as the source database. I found it really really interesting that there exists system stored procedure which now describes the resultset of the output. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Stored Procedure, SQL Tips and Tricks, T SQL, Technology

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  • Best Practices vs Reality

    - by RonHill
    On a scale depicting how closely best practices are followed, with "always" on one end and "never" on the other, my current company falls uncomfortably close to the latter. Just a couple trivial examples: We have no code review process There is very little documentation despite a very large code base (and some of it is blatantly incorrect/misleading) Untested/buggy/uncompilable code is frequently checked in to source control It is comically complicated to create a debuggable build for some of our components because of its underlying architecture. Unhandled exceptions are not uncommon in our releases Empty Catch{ } blocks are everywhere. Now, with the understanding that it's neither practical nor realistic to follow ALL best practices ALL the time, my question is this: How closely have commonly accepted best practices been followed at the companies you've worked for? I'm kind of a noob--this is only the second company I've worked for--so I'm not sure if I'm just more of an anal retentive coder or if I've just ended up at mediocre companies. My guess (hope?) is the latter, but a coworker with way more experience than me says every company he's ever worked for is like this. Given the obvious benefits of following most best practices most of the time, I find it hard to believe it's like this everywhere. Am I wrong?

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  • IUSR account and SCCM 2007 R3 agent

    - by steve schofield
    I recently started working with SCCM and rolling the agent out with machine having IIS 7.x installed.  I ran into issues where the SCCM agent wouldn't install.  The errors mostly were 0x80004005 and 1603, another key one I found was Return Value 3 in the SCCM setup log.  During the troubleshooting, I found a cool utility called WMI Diag  WMI diag is a VBS script that reads the local WMI store and helps diagnose issue.  Anyone working with SMS or SCCM should keep this handy tool around.  The good thing my particular case WMI was healthy.  The issue turned out I changed the Anonymous Authentication module from using the IUSR account to inherit Application Pool identity.  Once we temporarily switched back to IUSR, installed the agent, then switched the setting back to inherit application pool identity, the SCCM agent installed with no issues. I'm not sure why switching back to the IUSR account solved my issue, if I find out I'll update the post.  More information on IIS 7 builtin accounts http://learn.iis.net/page.aspx/140/understanding-built-in-user-and-group-accounts-in-iis-7 Specify an application pool identity  http://technet.microsoft.com/en-us/library/cc771170(WS.10).aspx SCCM resources (Config Mgr Setup  / Deployment forums) http://social.technet.microsoft.com/Forums/en-US/configmgrsetup/threads http://www.myitforum.com (the best independent SCCM community resource) Hope this helps. Steve SchofieldMicrosoft MVP - IIS

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  • SQLAuthority News – Best Complements – DBA Survivor: Become a Rock Star DBA

    - by pinaldave
    Today’s blog post is about the biggest complement I have ever received. I am very very happy and would like to share my feelings with you. Thomas Larock (Blog | Twitter) (known as SQLRockstar) keeps the excellent ranking of the blogger in SQL Server Arena. I am big fan of this list and have been referring lots of people. I was in the msdb database since the very first day of the ranking. Two days ago, I noticed that I am promoted to Model Database. I often receive complements about my blog but this is the biggest complement I have ever received. I have taken the snapshot of the same and listed here. Thomas is a SQL Server MVP and Board of Directors for the Professional Association for SQL Server. He is the author of DBA Survivor: Become a Rock Star DBA. The book is designed to give a junior to mid-level DBA a better understanding of what skills are needed in order to survive (and thrive) in their career. This book is currently not available in India, I am waiting for someone traveling from USA to bring the copy for me. I am very eager to read the book and promise to share the book review with all of you once I am done reading. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, SQLServer, T SQL, Technology

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