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• Is memcached pre-installed with Xcode on OS X?

  - by GeneQ

  The answer seems to be yes, according to Apple's documentation. To make sure I'm not hallucinating, I checked Apple's developer tools documentation. Yes, memcached is supported and documented by Apple: Apple Developer Library : memcached(1) Apparently, memcached is installed with Xcode since at least 10.6 onwards. The reason I'm asking this is that on the Web and on SO there are lots people asking how to install memcached on OS X but curiously no one seems to mention that the easiest way to do so is to simply install Xcode via the AppStore (or using a DMG). All the answers given involves using homebrew or some other complicated way to install memcached from source. Is there any compelling reason why the Apple shipped memcached is not good enough? I don't see any advantages of compiling and installing memcached from source since there's an Apple supported version.

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• Solving &ldquo;XmlSchemaException: The global element '&lt;elementName&gt;' has already been declare

  - by ChrisD

  I recently encountered this error when I attempted to consume a new hosted WCF service.  The service used the Request/Response model and had been properly decorated.  The response and request objects were marked as DataContracts and had a specified namespace.   My WCF service interface was marked as a ServiceContract and shared the namespace attribute value.   Everything should have been fine, right? [ServiceContract(Namespace = "http://schemas.myclient.com/09/12")] public interface IProductActivationService { [OperationContract] ActivateSoftwareResponse ActivateSoftware(ActivateSoftwareRequest request); } well, not exactly.  Apparently the WSDL generator was having an issue: System.Xml.Schema.XmlSchemaException: The global element 'http://schemas.myclient.com/09/12:ActivateSoftwareResponse' has already been declared. After digging I’ve found the problem; the WSDL generator has some reserved suffixes for its entities, including Response, Request, Solicit (see http://msdn.microsoft.com/en-us/library/ms731045.aspx).  The error message is actually the result of a naming conflict.  The WSDL generator uses the namespace of the service to build its reserved types.  The service contract and data contract share a namespace, which coupled with the response/request name suffixes I was using in my class names, resulted in the SchemaException. The Fix: Two options: Rename my data contract entities to use a non-reserved keyword suffix (i.e.  change ActivateSoftwareResponse to ActivateSoftwareResp). or; Change the namespace of the data contracts to differ from the service contract namespace. I chose option 2 and changed all my data contracts to use a “http://schemas.myclient.com/09/12/data” namespace value. This avoided a name collision and I was able to produce my WSDL and consume my service.

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• MacBook repeatedly disconnects from Wi-Fi

  - by redwall_hp

  I have an early 2008-model MacBook (2.4 GHz). The Wi-Fi router I have at home is a Linksys WRT54GX2 that I have had for a few years. My MacBook has recently started disconnecting from the router every few minutes, which is rather annoying. I can reconnect again without having to restart the router or anything, as it seems that the MacBook is just dropping the connection. I have tried changing the channel on the router, and upgrading the laptop from Leopard to Snow Leopard made no difference either. I'm only about six feet from the Linksys device, so distance isn't an issue. This only happens with the Linksys router, while I can use the local library's open network without any issues. The problem also seemingly becomes more pronounced after midnight. What could the problem be? Edit: Here are the logs that Spiff requested: http://pastie.org/951761

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• Poor quality when trying to stream a 720p video to XBox 360 using Media Center Extender

  - by MBraedley

  I have my XBox 360 set up as a Media Center Extender for my Windows 7 desktop. SD quality avi videos stream fine to my XBox, either though the video library or through Media Center Extender, but when I try a 720p mkv file, the frame rate plummets and the A/V sync is completely lost. I don't want to transcode or switch container formats (mkv isn't supported by the 360), but still want to stream. Both my desktop and 360 are plugged into the same gigabit switch, which is plugged into my ISP supplied modem/router. The video plays fine on my machine in a number of programs. Considering that I should have more than enough bandwidth to accommodate this video, why won't it play back properly?

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• How to install PyQt on Mac OS X 10.6

  - by Albert

  I want to install PyQt. This seems kind of complicated to install on OS X. I haven't found any precompiled packages of it (are there any? I would really prefer those). So I downloaded PyQt. And SIP, because it depends on that. These files: http://www.riverbankcomputing.co.uk/static/Downloads/PyQt4/PyQt-mac-gpl-4.7.3.tar.gz http://www.riverbankcomputing.co.uk/static/Downloads/sip4/sip-4.10.2.tar.gz Did a python configure.py && make && sudo make install on SIP -- installed without any problems. Tried the same on PyQt -- and failed of course: /Library/Frameworks/QtCore.framework/Headers/qglobal.h:288:2: error: #error "You are building a 64-bit application, but using a 32-bit version of Qt. Check your build configuration." Ok, so I tried with python configure.py --use-arch=i386. Same error. Any idea?

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• View scheduled recordings remotely

  - by Scott

  I have one computer which is equipped with a TV tuner card. The Recorded TV folder is shared so that other computers on the network can watch recordings. Now that I am upgrading my computers to Windows 7, they have Media Center, which makes for a nicer viewing experience than a Windows Explorer folder view. I have set up Media Center on my laptop to considering the Recorded TV folder on the tuner-equipped PC as an extended library location, so now I can view all the recordings from within Media Center on the laptop. To make this experience even better, is there a way to view the list of scheduled recordings on the tuner-equipped PC from within Media Center on my laptop?

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• How can I create an orthographic display that handles different screen dimensions?

  - by Piku

  I'm trying to create an iPad/iPhone game using GLES2.0 that contains a 3D scene with a heads-up-display/GUI overlaid on the top. However, this problem would also apply if I were to port my game to a computer and run the game in a resizable window, or allow the user to change screen resolutions... When trying to make the 2D GUI/HUD work I've made the assumption that all I'm really doing is drawing a load of 2D textured 'quads' on the screen and am trying to treat the orthographic projection as an old-style 2D display with 0,0 in the upper left and screenWidth,ScreenHeight in the lower right. This causes me all sorts of confusion when I rotate my ipad into Landscape mode since I can't work out what to put into my projection and modelview matrices to turn everything around the right way. It also gets messy if I want to support the iPad's large screen, an iPhone or a Retina display since I have to then draw three sets of textures for everything and work out which ones to use. Should I be trying to map the 2D OpenGL co-ords 1:1 with the screen? While typing out this question it occurs to me that I could keep my origin in the centre, still running -1/+1 along the axes. This would let me scale my 2D content appropriately on the different screen sizes, but wouldn't I end up with the textures being scaled and possibly losing quality? I'm using OpenGLES 2.0 and have a matrix library that has equivalents to the GLES1.1 glOrthof() and glFrustrum() calls.

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• How can I instruct nautilus to pre-generate PDF thumbnails?

  - by Glutanimate

  I have a large library of PDF documents (papers, lectures, handouts) that I want to be able to quickly navigate through. For that I need thumbnails. At the same time however, I see that the ~/.thumbnails folder is piling up with thumbs I don't really need. Deleting thumbnail junk without removing the important thumbs is impossible. If I were to delete them, I'd have to go to each and every folder with important PDF documents and let the thumbnail cache regenerate. I would love to able to automate this process. Is there any way I can tell nautilus to pre-cache the thumbs for a set of given directories? Note: I did find a set of bash scripts that appear to do this for pictures and videos, but not for any other documents. Maybe someone more experienced with scripting might be able to adjust these for PDF documents or at least point me in the right direction on what I'd have to modify for this to work with PDF documents as well. Edit: Unfortunately neither of the answers provided below work. See my comments below for more information. Is there anyone who can solve this?

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• Choosing an open source license such that maximum value is added to a startup

  - by echo-flow

  There are many companies that produce open source software products, and many business models that these companies can use. I'm particularly interested in companies like 280 North, the company behind Objective-J and Cappucino frameworks. My understanding of this organization's business model is that they: worked to develop a tool which added significant value to developers, released the tool under an open source license, built a community around the tool (which was helped by the project's open source licensing), created interesting demos illustrating the project's value All of these things added value to the project, and the company that owned it. Finally, 280 North was sold to Motorola. My question has to do with the role of software licensing in this particular business model. 280 North licensed their software projects under the LGPL, which gave them some proprietary control over how the project could be used. I believe that the LGPL is what's known as a "weak copyleft" license, meaning that the project can be linked to, without the linking code also being licensed under the LGPL; but software derived directly from the project would need to be licensed under the LGPL. For web-oriented libraries in particular, weak copyleft, or non-copyleft licensing seems to be quite common; I can't think of a single example of a popular or well-known web-oriented library that is licensed under the GPL (or AGPL). The question then, is, how much value would a weak copyleft license like the LGPL add to a software venture like 280 North, versus a non-copyleft license, such as the BSD license or the Apache Software License? I'd really appreciate any insight anyone can offer into this, but I'd be most interested in answers that can cite other companies as case studies or examples.

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• Migrate TFS 2010 Application Tier to another server on the same domain

  - by Liam

  I'm in the process of looking into the possibility of moving our TFS 2010 Application Tier to another server from the one it is on at the moment so that we can repurpose the hardware. I've been looking through the Microsoft Documentation over at http://msdn.microsoft.com/en-us/library/ms404869.aspx, but this assumes that everything is stored on one box (Application and Data tiers). In my setup however, our Data tier is separate to the Application tier and will be staying where it is. I think I should be able to do this but for my own peace of mind, would there be any issues or implications if I merely installed the Application Tier on the new hardware and then connected it to the existing data tier?

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• V4L2 and ALSA: Kernel SPI or User API?

  - by pnongrata

  I'm trying to understand what Video for linux and ALSA are (exactly), and I can't discern whether they're APIs for Linux application to use (the userspace) or if they are backend services that are only available to the Linux kernel (sort of a kernalspace SPI). Or, if they are something entirely different. On one hand, those articles make it sound like its an API for applications to use. However, on the V4L2 page it has a section title Software supporting Video4Linux... So is V4L2 a library that applications use, or is it a module that "snaps into" the kernel? I'm so coonfused, thanks in advance.

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• How to bulk mail-enable contacts from AD in Exchange 2007?

  - by George Hewitt

  We have several thousand 'contacts' setup in AD already for a faxing system. We're migrating to an online fax provider that uses e-mail rather than plain old telephone. So, we've bulk edited all the AD records so that the 'mail' attribute is populated with the right e-mail address in the right format. Now, how do we enable these contacts within Exchange 2007? I've looked through http://technet.microsoft.com/en-us/library/bb684891.aspx but that only seems to talk about manually editing the CSV output to specify the external addresses. AD already knows the external e-mail addresses - I just need the info in Exchange! Any thoughts?

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• Unable to remotely schedule tasks from the command line

  - by Eptin

  I'm on a Windows 7 machine, attempting to use the command line to schedule a task on another Windows 7 machine in my company's network. I have administrative-level credentials for both computers. With help from http://msdn.microsoft.com/en-us/library/windows/desktop/bb736357.aspx I have created this line to run on the command prompt: schtasks /Create /S machinename /U username /P password /SC ONCE /TN Test1 /TR C:\Windows\System32\calc.exe /ST 16:30 Whenever I launch that, I get the following error: ERROR: User credentials are not allowed on the local machine. How can I fix this?

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• PDF export printing in Internet Explorer [closed]

  - by user619804

  protected static byte[] exportReportToPdf(JasperPrint jasperPrint) throws JRException { JRPdfExporter exporter = new JRPdfExporter(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); exporter.setParameter(JRExporterParameter.JASPER_PRINT, jasperPrint); exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, baos); exporter.setParameter(JRPdfExporterParameter.PDF_JAVASCRIPT, "this.print({bUI: true,bSilent: false,bShrinkToFit: true});"); exporter.exportReport(); return baos.toByteArray(); } We are using code like this to export a PDF document from a Jasper application. The line exporter.setParameter(JRPdfExporterParameter.PDF_JAVASCRIPT, "this.print({bUI: true,bSilent: false,bShrinkToFit: true});"); adds JavaScript to send the PDF document directly to the printer. The expected behavior is that a print dialog will come up with a preview of the PDF document. This works fine most of the time - except I am having problems about one out of every 5-6 times in Internet Explorer 8 and Firefox. What happens is - the print preview dialog with the PDF document does not appear or it appears with a blank document in the preview window. -I've tried a number of different JavaScripts (different params to this.print() via exporter.setParameter -I've tried setting different response headers such as response.setContentType("application/pdf"); response.setHeader("Content-disposition","inline; filename=\"" + reportName + "\""); response.setContentLength(baos.size()); these did not seem to help This seems to be an IE and FF issue. Has anyone ever dealt with this problem? I need to get it to work across all browsers 100% of the time. Perhaps a different approach to accomplish the goal of sending the PDF document export directly to the printer? or a third party library that will work across browsers?

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• Font display issue (Mac OS X)?

  - by avenas8808

  I used a font manager on Mac OS X, for additional fonts in my graphic design projects without installing them to the fonts folder (I think that's how it works) - using Font Book and Font Explorer X Version 1.2.3 on OS X 10.6. Most fonts work fine, but Interstate has a problem: Interstate Regular is installed, but for some reason it's probably not seeing it; it's seeing all the Bold and Condensed versions fine. In the above image, it displays the second font as Interstate Regular, but it isn't that font... why? Also, how do I reset the system fonts folder back to the default-installed fonts (I think it's in the library folder) if worst comes to worst, and is using a font manager on Mac or Windows a good idea? I don't want to wreck my system, fairly new to using Mac, especially OS X, so any help would be gratefully accepted.

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• Macbook Pro 2.2ghz 2011 (OSX 10.6.7) problem with NTFS 3G

  - by James

  I installed NTFS 3G but now get the following error message when I try to plug in my external drive. I also get it on startup about my Windows partition. Uninstall/ reinstall does not work. NTFS-3G could not mount /dev/disk1s1at /volumes/freeagent GoFlex Drive because the following error occured: /library/filesystems/fuse.fs/support/fusefs.kext failed to load- (libkern/kext) link error; check the system/ kernel logs for errors or try kextutil(8). The MacFUSE file system is not available (71) Any help would be great. I'd hope to avoid reinstalling OS X if possible!

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• Designing a system with different business rules for different customers

  - by user1595846

  My company is rewriting our proprietary business application. The current architecture is poorly done and inflexible. It is coded more procedural oriented as opposed to object oriented. It has become difficult to maintain. Our system is a web application written in .Net Webforms. I am considering ASP.Net MVC for the rewrite. We intend to rewrite it with a good, solid architecture with the goal of maintainability and reusable classes for some of our other systems and services. We would also like the system to be customizable for different customers in the event that we market the system. I am considering redesigning the system based on the layered architecture (Presentation, Business, Data Access layers) described in the Microsoft Patterns and Practices Application Architecture Guide. http://msdn.microsoft.com/en-us/library/ff650706.aspx Hopefully this isn't too open ended, but how would you recommend allowing for different business logic/rules for different customers? I'm aware of Windows Workflow Foundation, but from what I've read about it, it seems many business rules could be too complicated to handle there. Also, Can anyone point me to where I can download an example of a .net solution that is based on the Application Architecture Guide? I have already downloaded the Layered Architecture Solution Guidance and the Expense Sample on codeplex. I was looking for something a bit larger and more robust that I could step through the code and see how it works. If you feel there are better architectures to base our redesign on please feel free to share. I appreciate your help!

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• Pros and Cons of Facebook's React vs. Web Components (Polymer)

  - by CletusW

  What are the main benefits of Facebook's React over the upcoming Web Components spec and vice versa (or perhaps a more apples-to-apples comparison would be to Google's Polymer library)? According to this JSConf EU talk and the React homepage, the main benefits of React are: Decoupling and increased cohesion using a component model Abstraction, Composition and Expressivity Virtual DOM & Synthetic events (which basically means they completely re-implemented the DOM and its event system) Enables modern HTML5 event stuff on IE 8 Server-side rendering Testability Bindings to SVG, VML, and <canvas> Almost everything mentioned is being integrated into browsers natively through Web Components except this virtual DOM concept (obviously). I can see how the virtual DOM and synthetic events can be beneficial today to support old browsers, but isn't throwing away a huge chunk of native browser code kind of like shooting yourself in the foot in the long term? As far as modern browsers are concerned, isn't that a lot of unnecessary overhead/reinventing of the wheel? Here are some things I think React is missing that Web Components will care of. Correct me if I'm wrong. Native browser support (read "guaranteed to be faster") Write script in a scripting language, write styles in a styling language, write markup in a markup language. Style encapsulation using Shadow DOM React instead has this, which requires writing CSS in JavaScript. Not pretty. Two-way binding

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• How do you create virtual folders from saved search

  - by Jérôme Radix

  I would like to have on unix-like platforms, the same functionality as to Windows 7 Library folders (aka virtual folders) you see in Windows Explorer. Gnome Nautilus do that kind of virtual folders through saved search. But I want a system-wide solution, not a gnome-wide solution. Is there a tool that creates virtual folders from the concatenation of multiple search queries (the result of multiple find commands ?). The solution should index files for better performances and you should be able to define the default folder for copy operations. I assume the solution of this kind of problem certainly use FUSE, but I can't see a complete solution to this kind of task in FUSE applications.

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• Corrupted file, hard drive test?

  - by all-R

  Hi guys, I'm currently on a macbook with a 1TB external hard drive connected trough a USB hub wich is connected on my macbook. The problem is, my disk, wich is partitioned in 2 (one HFS+ and one NTFS) keeps getting corrupted, recently it was my HFS+ partition, I could not repair it using the Apple's Disk utility, but was able to backup my files. Is it synonym that my hard drive is failing? Is it because of my USB hub? I also keep all my iTunes library on my external HD (HFS+ partition), and did a lot of transfer lately, adding files, removing etc. the last time, my partition got corrupted after a lot of deleted items. If anybody has an idea of what to check first, what could cause the problem, I would appreciate it :) Thanks!

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• What are some techniques I can use to refactor Object Oriented code into Functional code?

  - by tieTYT

  I've spent about 20-40 hours developing part of a game using JavaScript and HTML5 canvas. When I started I had no idea what I was doing. So it started as a proof of concept and is coming along nicely now, but it has no automated tests. The game is starting to become complex enough that it could benefit from some automated testing, but it seems tough to do because the code depends on mutating global state. I'd like to refactor the whole thing using Underscore.js, a functional programming library for JavaScript. Part of me thinks I should just start from scratch using a Functional Programming style and testing. But, I think refactoring the imperative code into declarative code might be a better learning experience and a safer way to get to my current state of functionality. Problem is, I know what I want my code to look like in the end, but I don't know how to turn my current code into it. I'm hoping some people here could give me some tips a la the Refactoring book and Working Effectively With Legacy Code. For example, as a first step I'm thinking about "banning" global state. Take every function that uses a global variable and pass it in as a parameter instead. Next step may be to "ban" mutation, and to always return a new object. Any advice would be appreciated. I've never taken OO code and refactored it into Functional code before.

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• Should I make a seperate unit test for a method, if it only modifies the parent state?

  - by Dante

  Should classes, that modify the state of the parent class, but not itself, be unit tested separately? And by separately, I mean putting the test in the corresponding unit test class, that tests that specific class. I'm developing a library based on chained methods, that return a new instance of a new type in most cases, where a chained method is called. The returned instances only modify the root parent state, but not itself. Overly simplified example, to get the point across: public class BoxedRabbits { private readonly Box _box; public BoxedRabbits(Box box) { _box = box; } public void SetCount(int count) { _box.Items += count; } } public class Box { public int Items { get; set; } public BoxedRabbits AddRabbits() { return new BoxedRabbits(this); } } var box = new Box(); box.AddRabbits().SetCount(14); Say, if I write a unit test under the Box class unit tests: box.AddRabbits().SetCount(14) I could effectively say, that I've already tested the BoxedRabbits class as well. Is this the wrong way of approaching this, even though it's far simpler to first write a test for the above call, then to first write a unit test for the BoxedRabbits separately?

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• How do you create virtual folders from saved search

  - by Jérôme Radix

  I would like to have on unix-like platforms, the same functionality as to Windows 7 Library folders (aka virtual folders) you see in Windows Explorer. Gnome Nautilus do that kind of virtual folders through saved search. But I want a system-wide solution, not a gnome-wide solution. Is there a tool that creates virtual folders from the concatenation of multiple search queries (the result of multiple find commands ?). The solution should index files for better performances and you should be able to define the default folder for copy operations. I assume the solution of this kind of problem certainly use FUSE, but I can't see a complete solution to this kind of task in FUSE applications.

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• Entity Framework and layer separation

  - by Thomas

  I'm trying to work a bit with Entity Framework and I got a question regarding the separation of layers. I usually use the UI - BLL - DAL approach and I'm wondering how to use EF here. My DAL would usually be something like GetPerson(id) { // some sql return new Person(...) } BLL: GetPerson(id) { Return personDL.GetPerson(id) } UI: Person p = personBL.GetPerson(id) My question now is: since EF creates my model and DAL, is it a good idea to wrap EF inside my own DAL or is it just a waste of time? If I don't need to wrap EF would I still place my Model.esmx inside its own class library or would it be fine to just place it inside my BLL and work some there? I can't really see the reason to wrap EF inside my own DAL but I want to know what other people are doing. So instead of having the above, I would leave out the DAL and just do: BLL: GetPerson(id) { using (TestEntities context = new TestEntities()) { var result = from p in context.Persons.Where(p => p.Id = id) select p; } } What to do?

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• mac osx software always order files alphabetically rather than by type.

  - by george

  i have noticed many mac applications sort the files alphabetically rather than by type. a good example would be coda by panic.com the files in the file menu are organized alphabetically, i requested for them to add the feature to organize files by type and they've said that its a finder thing. so i went in search to look at other applications to see if they were organizing by type i noticed dreamweaver cs4 had this same problem and now including dreamweaver cs5. there has to be something in the mac that does this and that i can modify. i played with spotlight and it now displays its files by type (thinking thats what i can do) but it didnt take affect in other applications. what library are these applications using to display a file menu for its files?

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