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• MVC model flow?

  - by fuzzygoat

  I am setting up an application using the MVC model and I have a query regrading the flow of information from the UI to the data model. What I need to do is place data from the UI in the model, what I have done is write a method in the view which collects the required data in an object and then passes it to the model. The model then takes ownership of the data so that the view can release its ownership. Does this sound sensible?

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• internal compiler error

  - by hyperboreean

  I am getting this message: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <file:///usr/share/doc/gcc-4.4/README.Bugs> for instructions. for every compilation that takes longer (ie: linux kernel, kde sources etc.) I've tried other OS (at that moment I was on Fedora 12, now on Debian; was a Suse also) and it didn't work. I've tried replacing my hard disk, since it needed an upgrade either ways - that didn't work either. I assumed that it's the RAM fault - tested them with memtest and it says they are fine. Does anyone know what else I can do in order to figure out where the problem is?

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• syntax error: unknown user 'munin' in statoverride file

  - by John

  Server running Ubuntu 12.04 lts I installed munin the other day on a server. I decided later to remove it with apt-get. I noticed that not everything was removed from the installation so manually removed the munin web directory and also removed the munin user-name and group from the sever. However I have just now tried to run apt-get upgrade which is now returning an error: dpkg: unrecoverable fatal error, aborting: syntax error: unknown user 'munin' in statoverride file E: Sub-process /usr/bin/dpkg returned an error code (2) I am now out of my depth. What does this mean? Google results have not really been helpful. Can anyone help? Thanks, John

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• Windows setup claims the installation source is not accessible. How do I fix this?

  - by Wil

  I'm trying to install Windows 7 Ultimate over my existing Windows 7 Professional. I downloaded the ISO from Microsoft and burned the install disc at the slowest speed possible (x3). I booted to the DVD, but at the second screen I am already getting an error! That screen I am choosing between "Upgrade" and "Custom". I am trying to choose "Custom" but then I get the error: Windows installation encountered an unexpected error. Verify that the installation sources are accessible, and restart the installation. Error code: 0xE0000100

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• Visual Studio Macro To Switch Solution Configuration

  - by Eddie Parker

  I'm trying to write a macro that toggles between release/debug solution configurations in Visual Studio. It appears I can switch the configuration by using 'DTE.ExecuteCommand("Build.SolutionConfigurations", "Debug")'. Is there a way I can 'read' the value? Or is there a way I can use macros to 'focus' on the solution configuration UI element?

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• Mercurial for Beginners: The Definitive Practical Guide

  - by Laz

  Inspired by Git for beginners: The definitive practical guide. This is a compilation of information on using Mercurial for beginners for practical use. Beginner - a programmer who has touched source control without understanding it very well. Practical - covering situations that the majority of users often encounter - creating a repository, branching, merging, pulling/pushing from/to a remote repository, etc. Notes: Explain how to get something done rather than how something is implemented. Deal with one question per answer. Answer clearly and as concisely as possible. Edit/extend an existing answer rather than create a new answer on the same topic. Please provide a link to the the Mercurial wiki or the HG Book for people who want to learn more. Questions: Installation/Setup How to install Mercurial? How to set up Mercurial? How do you create a new project/repository? How do you configure it to ignore files? Working with the code How do you get the latest code? How do you check out code? How do you commit changes? How do you see what's uncommitted, or the status of your current codebase? How do you destroy unwanted commits? How do you compare two revisions of a file, or your current file and a previous revision? How do you see the history of revisions to a file? How do you handle binary files (visio docs, for instance, or compiler environments)? How do you merge files changed at the "same time"? Tagging, branching, releases, baselines How do you 'mark' 'tag' or 'release' a particular set of revisions for a particular set of files so you can always pull that one later? How do you pull a particular 'release'? How do you branch? How do you merge branches? How do you merge parts of one branch into another branch? Other Good GUI/IDE plugin for Mercurial? Advantages/disadvantages? Any other common tasks a beginner should know? How do I interface with Subversion? Other Mercurial references Mercurial: The Definitive Guide Mercurial Wiki Meet Mercurial | Peepcode Screencast

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• Are there pitfalls to using incompatible RAM (frequencies) in motherboards?

  - by osij2is

  I'd like to use 2 x 4GB DDR3 1600 dimms in a motherboard capable of only DDR3 1066. The DDR3 1600 is on sale and the cost is identical to 1066 dimms. It'd be nice to have these faster sticks around should i upgrade the motherboard. I assume the RAM can under clock itself or be changed in the BIOS. While obviously it's less than ideal situation, I don't know if there are other unintended consequences in terms of stability, performance and longevity of the board and said RAM. Am I doing any damage to the memory controller or RAM? I've always bought RAM at the max speed specified for the motherboard and I've never gone over so I'm not sure if there any caveats to this at all. Edit: I intend to use the RAM in pairs. I know that mixing RAM speeds is just a bad idea.

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• ARM cortex: mutex using bit banding

  - by Jeff V

  Given that, on the ARM Cortex M3, I can: atomically read a single bit atomically set a single bit atomically clear a single bit How can I combine these for a mutex style set of operations: try lock take lock release lock It seems that try_lock or take_lock would require two operations that would not be atomic. Do I need more control to accomplish this? Disable global interrupts would do it but it seems there should be a more surgical approach.

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• TrueCrypt & upgrading your hard drive?

  - by Danielb

  I currently use TrueCrypt to encrypt the hard drive in a Win7 laptop (everything in a single partition). I am looking to upgrade the hard drive to a model with significantly more storage capacity. I've had a look through the documentation but I couldn't see anything about this particular scenario. I assume I need to do something like the following: Remove the encryption from the existing drive. Clone the existing drive image onto the new hard drive. Physically install the new drive into the laptop. Resize the single partition to use all the space in the new drive. Encrypt all of the new bigger drive with TrueCrypt.

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• Programatically setting castor properites in version 1.3

  - by Dinuk

  Hello, I am trying to programmatically set the org.exolab.castor.indent property when marshalling some objects - however, contrary to the documentation published, the class org.exolab.castor.util.LocalConfiguration does not seem to be shipped with the 1.3 release. Currently, I have specified the castor.properties file on the classpath, which is picking up the properties I want to set, but I would rather reduce this deployment overhead, as my indentation requirement is not likely to change. Any advice would be greatly appreciated.

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• How to spot undefined behavior

  - by BlueRaja - Danny Pflughoeft

  Is there any way to know if you program has undefined behavior in C++ (or even C), short of memorizing the entire spec? The reason I ask is that I've noticed a lot of cases of programs working in debug but not release being due to undefined behavior. It would be nice if there were a tool to at least help spot UB, so we know there's the potential for problems.

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• How can I get Silverlight 4 Tools to work in Web Developer 2010 Express?

  - by Edward Tanguay

  I installed Windows 7. I then installed Web Developer 2010 Express from here with the Web Platform Installer. I then installed the the April 15 release of Silverlight Toolkit from here. I then added this reference: Then in my XAML, I reference it like this but it gives me no intellisense and tells me that I am missing an assembly reference: What do I have to do to use the Silverlight 4 Toolkit in Web Developer 2010 Express?

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• ASP.NET MVC framework port for Java EE?

  - by Adam Asham

  So I've played some with the new, not yet final release of ASP.NET MVC framework and I find it to be very nice and elegant. However at work we are tied to Java for the time being, so I'm wondering this: is there a port of the framework out there for Java people like myself? I realize that webforms isn't going to be available unfortunately but what about the routing framework? /Adam

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• VS2008 Pre-Build Event Command BuildAction=None

  - by Frederick

  Hi Guys, I am trying to add a prebuild even command line which essentially sets Build Action = None For a list of files before the solution is packaged up for release. How would I go about adding this & what command would I use to exclude a number of files in the web solution ? i.e. \script\some-script.js [Set Build Action = None] etc \script\some-script2.js [Set Build Action = None] etc ?

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• How to do an fetch request with expressions like this on the iPhone?

  - by dontWatchMyProfile

  The documentation has an example on how to retrieve simple values only, rather than managed objects. This remembers a lot SQL using aliases and functions to only retrieve calculated values. So, actually pretty geeky stuff. To get the minimum date from a bunch of records, this is used on the mac: NSFetchRequest *request = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Event" inManagedObjectContext:context]; [request setEntity:entity]; // Specify that the request should return dictionaries. [request setResultType:NSDictionaryResultType]; // Create an expression for the key path. NSExpression *keyPathExpression = [NSExpression expressionForKeyPath:@"creationDate"]; // Create an expression to represent the minimum value at the key path 'creationDate' NSExpression *minExpression = [NSExpression expressionForFunction:@"min:" arguments:[NSArray arrayWithObject:keyPathExpression]]; // Create an expression description using the minExpression and returning a date. NSExpressionDescription *expressionDescription = [[NSExpressionDescription alloc] init]; // The name is the key that will be used in the dictionary for the return value. [expressionDescription setName:@"minDate"]; [expressionDescription setExpression:minExpression]; [expressionDescription setExpressionResultType:NSDateAttributeType]; // Set the request's properties to fetch just the property represented by the expressions. [request setPropertiesToFetch:[NSArray arrayWithObject:expressionDescription]]; // Execute the fetch. NSError *error; NSArray *objects = [managedObjectContext executeFetchRequest:request error:&error]; if (objects == nil) { // Handle the error. } else { if ([objects count] > 0) { NSLog(@"Minimum date: %@", [[objects objectAtIndex:0] valueForKey:@"minDate"]; } } [expressionDescription release]; [request release]; Nice, I though - but having a deep look into NSExpression -expressionForFunction:arguments: it turns out that iPhone OS does NOT support the min: function. Well, probably there's a nifty way to use an own function for this kind of stuff on the iPhone as well? Because on thing I'm already worrying about is, how I'm gonna sort a table based on the calculated distance of targets on a map (location-based stuff).

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• CentOS connect to the internet

  - by Delirium tremens

  I installed CentOS, but it didn't automatically connect to the internet. Is that the normal behavior? I have Ethernet Broadband Router DI-604 and WebStar DPX2203 series Cablemodem with EMTA . What should I do to connect to the internet? Update: A cousin told me my ethernet adapter or network board will depend on my motherboard. My computer upgrade document says the motherboard is gigabyte video onboard. I heard gigabyte's network adapters are Gigabit or Realtek. In CentOS, System - Administration - Network - New - Ethernet, first, only "Other Network Board" was listed, so I selected it and clicked Next, then there wasn't Gigabit, but there was Realtek, so I selected Realtek. I heard with Net Virtua selecting dhcp the things first answered asked me to tell first answerer are automatically configured. So I tried Realtek with dhcp, but it still didn't work.

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• Remove Live ID authentication from user account

  - by slugster

  I've just run in to a really annoying issue with Windows 8.1 - it seems I cannot remove the need to use Live ID credentials from an account without completely deleting that account. I know the process to do it - use the Disconnect link from the Accounts-Your account screen. The trouble comes when you get to the Switch to a local account screen, it will not let you enter the current account for the user name, instead you must enter a new one thus creating a new user account. Can I revert back to using just a local login without having to recreate the account? It seems quite retarded that I have to recreate the account, as deep down the only change required is which credential provider is used to authenticate the login. (Note that this Live ID linkage was created by using the Windows Store, not as a result of an upgrade from 8 to 8.1).

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• Difference between VMWare tools?

  - by tore-

  I'm currently writing a module for puppet which installs VMWare tools to virtual nodes. I want to do this via yum and and yum-repo. VMWare have their own repo (http://packages.vmware.com/tools/esx/3.5latest/rhel5/x86_64/index.html) which I thought I could use, rather than creating my own. But then I noticed that their repo files is alot different than the rpm file used when installing VMWare Tools on the node, via the "Install/upgrade VMWare Tools" in vSphere. Does anyone know what the real difference is? Does anyone have any preferences?

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• Install Windows 8 64-bit over the top of Windows 8 32-bit

  - by Andrew Gee

  I currently have Windows 8 32-bit installed from MSDN (I didn't realise at the time that my processor supports 64-bit). I understand that you can't upgrade within Windows 32-bit to 64-bit directly from the ISO. I have burned the ISO to a DVD, and have attempted booting from this drive. The problem I am encountering: The operating system couldn't be loaded because a required file is missing or contains errors. File: CI.dll Error code: 0xc0000221 You'll need to use the recovery tools on your installation media. If you don't have any installation media (like a disc or USB device), contact your system administrator or PC manufacturer. Additional info: Computer: HP Pavillion m9280.uk-a Processor: AMD Phenom 9600 Quad-Core RAM: 3 1GB sticks Thanks in advance!

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• Which hardware changes require operating system reinstallation?

  - by Mark

  I'm about to upgrade my computer but might keep some parts. Just wandering what I would have to keep to prevent me having to reinstall my OSs, at the moment I have a dual boot setup with ubuntu and windows 7. I'm pretty sure you can't just take your hard drive with the OS on it and put it into a different box and keep going (can you?) but I know you can change the graphics cards, secondary hard drives and ram with out a problem. So what is it that you can't change? The CPU? Motherboard? Thanks for any replies

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• Hibernate : Disabling contextual LOB creation as createClob() method threw error

  - by Giri Byaks

  Hi, I am using using hibernate 3.5.6 with Oracle 10g. I am seeing the below exception during initialization but the application itself is working fine. What is the cause for this exception? and how it can be corrected? Exception Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException Info Oracle version: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 JDBC driver: Oracle JDBC driver, version: 11.1.0.7.0 Thanks, Girish

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• Fix for OpenSolaris with no gcc vs. Nexenta with no ext3

  - by Jake Wharton

  I'm attempting to migrate my server from linux to a Solaris variant during a hardware upgrade. The machine is based around an Abit AN-M2 board which has an NForce chipset. I have what seems to be a chicken-and-egg problem of sorts: OpenSolaris 2009.06 does not recognize the NIC and I cannot compile the drivers for it as it also lacks gcc. I haven't tested as to whether or not I can mount an ext3 partition yet but its moot if there is no networking. Nexenta 3.0b3 recognizes the NIC but I cannot get the ext3 drives mounted due to FSWfspart refusing to install. I do not know much about Solaris but I wager this is due to the fact that Nexenta is based around Debian as well. While I am reusing the mobo/CPU combo, I did just spent a lot of money on the other hardware around it and would very much like to get it up and running smoothly and quickly. Does anyone have any suggestions that are not: Get a new mobo/CPU Run another OS Use alternate NIC

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• How do I tell Castle Inversion of Control that I want a new instance of a singleton object without r

  - by Corpsekicker

  At a certain point, during the running of my app, I want Castle.Windsor to release everything cached in memory. Is this impossible for a singleton object?

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• PHP Kohana CentOS 5

  - by Undefined

  Trying to deploy a Kohana based project in CentOS 5. Installed PHP 5.3.1 but still getting the following error. Warning: preg_match() [function.preg-match]: Compilation failed: this version of PCRE is not compiled with PCRE_UTF8 support at offset 0 in /usr/local/apache2/htdocs/icarus/system/core/utf8.php on line 30 Fatal error: PCRE has not been compiled with UTF-8 support. See PCRE Pattern Modifiers for more information. This application cannot be run without UTF-8 support. in /usr/local/apache2/htdocs/icarus/system/core/utf8.php on line 38 Trying since last 2 days, i upgraded my PHP from 5.1 to 5.3 but still getting the same error.The problem as per me is that the PCRE module of PHP in phpinfo() says is of sep 2004. Below is the actual line PCRE Library Version 5.0 13-Sep-2004 Can anyone tell me how to upgrade it or wats the solution to the problem. Thanks.

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• Macbook start's up but is unresponsive

  - by Theo Holden

  I have a original Macbook, which I bought second hand last year, up until recently it had been working fine, I had had to upgrade the ram to 4gb and buy a new battery but had no other issues. Recently when I have turned my Macbook on it boots up fine however it is completely unresponsive after loading everything for several minutes. I can move the mouse around the screen but cannot selective anything with the cursor nor do any of the function keys or keyboard shortcuts work. After several minutes however everything works fine, this is rather inconvenient as I would prefer to not have to wait five minutes after turning my Macbook on before I can use it. I was wondering what might cause this temporary unresponsiveness and if there was a way I could fix the problem?

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