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• What is the best way to add attributes to auto-generated entities (using VS2010 and EF4)

  - by Dani

  ASP.NET MVC2 has strong support for using attributes on entities (validation, and extending Html helper class and more). If I generated my Model from the Database using VS2010 EF4 Entity Data Model (edmx and it's cs class), And I want to add attributes on some of the entities. what would be the best practice ? how should I cope with updating the model (adding more fields / tables to the database and merging them into the edmx) - will it keep my attributes or generate a new cs file erasing everything ? (Manual changes to this file may cause unexpected behavior in your application.) (Manual changes to this file will be overwritten if the code is regenerated.)

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• JS - Why is this hidden div not showing in IE?

  - by Dodi300

  Hello. I've made a page which should show a div when the user clicks on a input text box. The div will contain more information about the required input, etc. The page works fine on FireFox and the div shows, but when using IE the div just doesn't show. It seems like I've tried everything and nothing has worked so far. This is the page. Maybe you could look at the source and see what I'm doing wrong? If you need me to upload the source as a text file, I can do that. Thanks for the help!

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• I can't get the MapsDemo that comes with "Google APIs by Google Inc, Android API8, revision 2" to work

  - by Hanspeter Adam

  I have tried everything according to instructions to get the MapsDemo to work on API8. I followed all the certificate signing instructions and all I get is a blank (blue) screen on the emulator. I see that people have been having the same issues but all the suggested solutions boil down to the certificate signing and that has not worked for me. One guy on the Internet even said he got it to work but never said how!!!! So, I thought I'd try the MapsDemo that comes with "Google APIs by Google Inc, Android API7, revision 1". There I saw the map come up on the emulator but only once. That one time it came up clearly and I was able to pan it but after exiting the app and trying it again, it no longer worked. Now all I get is some faint outlines that makes it look like it's trying to work but for some reason is not successful. I am running on Windows Vista Service Pack 2 and using Eclipse Helios. Please help, Hans

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• storing huge amount of records into classic asp cache object is SLOW

  - by aspm

  we have some nasty legacy asp that is performing like a dog and i narrowed it down to because we are trying to store 15K+ records into the application cache object. but that's not the killer. before it stores it, it converts the ADO stream to XML then stores it. this conversion of the huge record set to XML spikes the CPU and causes all kinds of havoc on users when it's happening. and unfortunately we do this XML conversion to read the cache a lot, causing site wide performance problems. i don't have the resources to convert everything to .net. so that's out. but i need to obviously use caching, but int his case the caching is hurting instead of helping. is there a more effecient way to store this data instead of doing this xml conversion to/from every time we read/update the cache?

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• What is a good architecture for a Lift-JPA application?

  - by egervari

  I was wondering what is the best practice for a JPA model in Lift? I noticed that in the jpa demo application, there is just a Model object that is like a super object that does everything. I don't think this can be the most scalable approach, no? Is it is wise to still do the DAO pattern in Lift? For example, there's some code that looks a tad bloated and could be simplified across all model objects: Model.remove(Model.getReference(classOf[Author], someId)) Could be: AuthorDao.remove(someId) I'd appreciate any tips for setting up something that will work with the way Lift wants to work and is also easy to organize and maintain. Preferably from someone who has actually used JPA on a medium to large Lift site rather than just postulating what Spring does (we know how to do that) ;) The first phase of development will be around 30-40 tables, and will eventually get to over 100... we need a scalable, neat approach.

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• TeamCity's build agent unable to find PowerShell

  - by cincura.net

  I have TC's build agent installed on Windows 2008 R2 SP1 Core. The server has PowerShell 2.0 installed (double checked, and actually from PS downloaded the TC installation). Looking at some build configuration I see these being incompatible with this agent, because powershell_x86/powershell_x64 is required. I tried deleting build agents dirs to force upgrade, but no luck. Interestingly if I provide powershell_x86, powershell_x86_Path (and for 64bit) variables into config file manually, everything runs fine. Is there anything I can do to have the build agent find PowerShell automatically? What/where is it looking for it? Maybe the 'Core' is problem.

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• Local Live Quicktime Video Broadcast, latency?

  - by Snowwire

  I'm looking into the feasibility of using a local server to distribute live video of a conference to delegates in the same room. They would still hear the live audio coming from the speaker, so only the video would be streamed. I was considering a Darwin Steaming Server (a lot of iPhone users to support) and encoding with H.264. My main concern is latency across the network. Even with everything running locally, would there be lip sync issues between the live audio and the 'live' video stream? It feels like there will be problems given the encoding, broadcasting, decoding to be completed, but I've never done any like this before so thought I would check. Thanks

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• Open zip file without temporary files

  - by Javis Perez

  i've seem this post about extracting a zip without a temporary file via stream and pipes: Open a file from archive without temporary extraction The problem is that i'm using php and have no idea if that is possible. I've search a lot with no luck. My idea is to preview zip files from the dropbox using its API but i dont want to save the files to a local drive, just preview the content. Any idea if that's possible with php? Almost everything i found is about creating the file, not reading it... :-\ I was thinking that i might try with nodejs, but i know mostly nothing about nodejs, do you think it would support it? Any other idea please? thank you.

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• Floating Menu CSS/Javascript issues

  - by Ron Cassel

  I'm new to all this so thanks for being patient. Ok so I'm building a site with a Floating Javascript menu. The original code is from: Jtricks Absolute Floating Menu Here's the issue: When viewing the site in a mobile browser, zooming in initially caused the floating javascript menu to leave the far left of the page and cover content on the page. I fixed this by locking it into a fixed width div on the left side of the page. Now the issue I have is, I don't want the fancy animation of the javascript. A simple CSS script for a fixed window is fine. The only issue is, everything I've tried has done the same "free floating" thing when zoomed in on mobile browsers and I can't seem to find a fix. Anyone have any ideas?

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• Ruby and Rails Async

  - by Edijs Petersons

  I need to perform long-running operation in ruby/rails asynchronously. Googling around one of the options I find is Sidekiq. class WeeklyReportWorker include Sidekiq::Worker def perform(user, product, year = Time.now.year, week = Date.today.cweek) report = WeeklyReport.build(user, product, year, week) report.save end end # call WeeklyReportWorker.perform_async('user', 'product') Everything works great! But there is a problem. If I keep calling this async method every few seconds, but the actual time heavy operation performs is one minute things won't work. Let me put it in example. 5.times { WeeklyReportWorker.perform_async('user', 'product') } Now my heavy operation will be performed 5 times. Optimally it should have performed only once or twice depending on whether execution of first operaton started before 5th async call was made. Do you have tips how to solve it?

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• How do I keep JTextFields in a Java Swing BoxLayout from expanding?

  - by Matthew

  I have a JPanel that looks something like this: JPanel panel = new JPanel(); panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS)); ... panel.add (jTextField1); panel.add (Box.createVerticalStrut(10)); panel.add (jButton1); panel.add (Box.createVerticalStrut(30)); panel.add (jTextField2); panel.add (Box.createVerticalStrut(10)); panel.add (jButton2); ... //etc. My problem is that the JTextFields become huge vertically. I want them to only be high enough for a single line, since that is all that the user can type in them. The buttons are fine (they don't expand vertically). Is there any way to keep the JTextFields from expanding? I'm pretty new to Swing, so let me know if I'm doing everything horribly wrong.

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• F# powerpack and distribution

  - by rwallace

  I need arbitrary precision rational numbers, which I'm given to understand are available in the F# powerpack. My question is about the mechanics of distribution; my program needs to be able to compile and run both on Windows/.Net and Linux/Mono at least, since I have potential users on both platforms. As I understand it, the best procedure is: Download the powerpack .zip, not the installer. Copy the DLL into my program directory. Copy the accompanying license file into my program directory, to make sure everything is above board. Declare references and go ahead and use the functions I need. Ship the above files along with my source and binary, and since the DLL uses byte code, it will work fine on any platform. Is this the correct procedure? Am I missing anything?

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• method returning wrong variable

  - by cocoanewbie

  This class I'm working with has three instance variables I'm interested in, NSmutablearrays xArray yArray and zArray, there are also other NSmutablearrays, a, bArray and c. I just added accessors - (NSMutableArray *) xArray { return xArray; } ditto for y and z. However, it's returning yArray, zArray and bArray for some reason. Why is that happening? Okay, I just changed the names of the methods to GetXArray and everything seems to be returning the right variables. Now I'm really confused. How the heck did this happen and how do I prevent this from happening in the future?

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• UIWebView goBack method acts differently on different devices

  - by maxpower

  First Device: 8gb 2nd gen Version: 3.1.3 (7E18) Model: MB528LL Second Device: 32gb 3rd gen Version: 3.1.3 (7E18) Model: MC008LL When I call goBack on the 8gb device, shouldStartLoadWithRequest:navigationType: is called When I call goBack on the 32gb device, shouldStartLoadWithRequest:navigationType: is not called I am not doing any caching (not like it works anyway). To make sure it wasn't caching I removed any possible caching via the request object's cache policy and removing all cache whenever webViewDidFinishLoading is called. Same app, same url, everything is the same but the device itself. Why? FYI: shouldStartLoadWithRequest:navigationType: is called on the simulator when goBack is called

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• WebGL transparent black.

  - by Catalin Dumitru

  I have a strange problem that I can't figure out when trying to do blending in WebGL. Black is rendered fully transparent , and everything with shades of grey in it is rendered also semi transparent. I have set it to use the alpha channel as the source for transparency, and in some respect it works, every thing that isn't black/grey is rendered differently when changing the alpha value. but even when I set the alpha to 1, black is still displayed transparent. This is how I enable transparency: this.gl.blendFunc(this.gl.SRC_ALPHA, this.gl.ONE); this.gl.enable(this.gl.BLEND); this.gl.disable(this.gl.DEPTH_TEST); And the part of the shader that does transparency: gl_FragColor = vec4(texColor.rgb * vLightWeight, texColor.a * uAlpha); where texColor is the texture color that is being sampled, vLightWeight is the shadowing that is being calculated in the vertex shader, and uAlpha the uniform which I use for transparency.

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• Combining RequiresSTA and Timeout attributes on a test fails

  - by Peter Lillevold

  I have a test that opens and closes a WPF Window and thus requires the STA threading apartment. To safeguard the test against the window staying open (and thus hang the test indefinitely) I wanted to use the Timeout attribute. The problem is that applying the Timeout attribute causes the test to fail on timeout regardless of whether the test works or not. Without the attribute everything works fine. My theory is that Timeout causes the test to be executed on a new thread that does not inherit the STA apartment. Is there another way to have both STA and the timeout safeguard in NUnit? My test looks something like this: [Test, RequiresSTA, Timeout(300)] public void Construct() { var window = new WindowView(); window.Loaded += (sender, args) => window.Close(); var app = new Application(); app.Run(window); try { // ...run system under test } finally { app.Shutdown(); } }

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• Suggested C++ books?

  - by Josh Bradley

  Ok, I've had one semester of C++ and will be taking a second semester in it after I have taken a Data Structure class this fall. In the first class, we dealt mainly with C++ syntax and the textbook we used was ok, but now I'm wanting to go ahead and purchase a great C++ book that encompasses a lot of the programming concepts used today. I'm learning Objective-C on my own and was able to get through the whole object-oriented stuff pretty easily, along with other things like pointers, inheritance, delegation, etc. It doesn't have to exactly have EVERYTHING in it, but I do want to buy the book with the most information in it. Money is no problem. So my question is what book did you use or still use for C++? Is it a book that you can reference back to if you ever forget how to do something small, or would you have to go online and find the answer.

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• Java - How to change context root of a dynamic web project in eclipse

  - by Yatendra Goel

  I have developed a dynamic web project in eclipse. Now I can access it through my browser using the following url: http://localhost:8080/MyDynamicWebApp Now I want to change the access url to http://localhost:8080/app I changed the context root from the project properties | Web Project Settings | Context Root But it is not working. The web app still has the access url as earlier. I have re-deployed the application on tomcat, re-started the tomcat and have done everything that should be done but the access url is the same as earlier. I found that there were no server.xml file attached with the WARfile. The how the tomcat is determining that the context root of my web app is /MyDynamicWebApp and is allowing me to access the application through that url

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• Call AppDelegate Method from Class

  - by golfromeo

  Basically, I need to call a method in my AppDelegate from one of my view controller classes. Currently, I'm doing the following: myAppDelegate *appDelegate = (myAppDelegate *)[[UIApplication sharedApplication] delegate]; [appDelegate doMethod]; And including the myAppDelegate.h at the top of the .m file of the class: #import "myAppDelegate.h" When I run it, everything works... But I get the following warning: warning 'myAppDelegate' may not respond to '-doMethod' Is there another way that I should reference the app delegate? Thanks for any help in advance.

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• C# exporting e-mails to excel on widndows forms using microsoft.office.interop.excel

  - by shin

  I need to export some data to excel in my forms aplication, so i used microsoft.office.interop.excel and everything is ok except one thing. When exporting client's email I would like to make it an mailto: link. excellApp.Cells[row, 16] = "mailto:"+client.Email; doesn't work Whend I add hiperlink when exporting www field it looks like this: excelWorkSheet.Hyperlinks.Add(excellApp.Cells[row, 14], client.Www, Type.Missing, Type.Missing, Type.Missing); How can I export an email to have similar effect coz right now I have only simple fields withou any action...?

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• Regex pattern help (I almost have it, just need a bit of expertise to finish it)

  - by Mohammad

  I need to match two cases js/example_directory/example_name.js and js/example_directory/example_name.js?12345 (where 12345 is a digit string of unknown length and the directory can be limitless in depth or not exist at all) I need to capture in both cases everything between js/ and .js and if ? exists capture the digit string after ? This is what I have so far ^js/(.*).js\??(\d+)? This works except it also captures js/example_directory/example_name.js12345 I want the regex to ignore that. Any suggestions? Thank you all! Test your patterns here

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• Using Maven to build JAR from source in Subversion trunk

  - by Anonymouse

  There's a Java library that I would like to use in my project. My project uses Maven to pull in dependencies and it works great for everything except this one library. The problem is, this library never has releases. The author maintains the source in a Subversion repository and only makes changes in trunk. Is there a way I can tell Maven to Update (or check out) the library's source tree from Subversion Build it according to its POM Use the resulting jar as a dependency for this project Do this regularly (possibly at each build) For bonus points, mark which Subversion revision of that library I want to use Thanks!

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• cross domain DOM access and manipulation in Java ?

  - by gaqer

  In my Java app, how can I incorporate the browser (which loads and renders URLs) in Swing and access it's DOM and manipulate HTML ? How can you embed such browser in a Rich Internet Application and access it's DOM ? More specifically, Vaadin ? Is there a HTTP proxy class that can load an external URL, and render it to the user ? This was what I was doing on LAMP stack....but I want to switch to Vaadin or some Java web framework where I can just use Java to do everything from server-side to client-side logic design, so I can focus more on application logic. (aka looking for developer friendly frameworks like Vaadin). Thank you and have a great weekend !

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• How do I dynamically update an instance array to hold a list of dynamic methods on instantiation?

  - by Will

  I am trying to dynamically define methods based on xml mappings. This works really well. However I want to create an instance variable that is a array of the dynamically defined methods. My code looks something like this def xml_attr_reader(*args) xml_list = "" args.each do |arg| string_val = "def #{arg}; " + " xml_mapping.#{arg}; " + "end; " self.class_eval string_val xml_hash = xml_list + "'#{arg}'," end self.class_eval "@xml_attributes = [] if @xml_attributes.nil?;" + "@xml_attributes = @xml_attributes + [#{xml_list}];" + "puts 'xml_attrs = ' + @xml_attributes.to_s;" + "def xml_attributes;" + " puts 'xml_attrs = ' + @xml_attributes.to_s;" + " @xml_attributes;" + "end" end So everything works except when I call xml_attributes on an instance it return null (and prints out 'xml_attrs = '). While the puts before the definition actually prints out the correct array. (when I instantiate the instance)

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• How to respond to any kind of interruption?

  - by mystify

  My app is playing a pretty complex animation. It's like a flipbook. What I do is: I have a huge loop with selectors, and after every delayed call the next one is called. Now someone calls the user and the device suddenly shows up this fat green status bar and maybe some big pick-up-the-phone-call overlay. Or: The alarm clock rings, and a big alert sheet appears in front of just about everything. It would be great to just pause the whole animation in case of ANY interruption. Probably I've also missed like 5 more possible interruptions. How are you doing that? How do you get notified for all interruptions and then call one single -stopEverything method?

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