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  • Unity throws SynchronizationLockException while debugging

    - by pjohnson
    I've found Unity to be a great resource for writing unit-testable code, and tests targeting it. Sadly, not all those unit tests work perfectly the first time (TDD notwithstanding), and sometimes it's not even immediately apparent why they're failing. So I use Visual Studio's debugger. I then see SynchronizationLockExceptions thrown by Unity calls, when I never did while running the code without debugging. I hit F5 to continue past these distractions, the line that had the exception appears to have completed normally, and I continue on to what I was trying to debug in the first place.In settings where Unity isn't used extensively, this is just one amongst a handful of annoyances in a tool (Visual Studio) that overall makes my work life much, much easier and more enjoyable. But in larger projects, it can be maddening. Finally it bugged me enough where it was worth researching it.Amongst the first and most helpful Google results was, of course, at Stack Overflow. The first couple answers were extensive but seemed a bit more involved than I could pull off at this stage in the product's lifecycle. A bit more digging showed that the Microsoft team knows about this bug but hasn't prioritized it into any released build yet. SO users jaster and alex-g proposed workarounds that relieved my pain--just go to Debug|Exceptions..., find the SynchronizationLockException, and uncheck it. As others warned, this will skip over SynchronizationLockExceptions in your code that you want to catch, but that wasn't a concern for me in this case. Thanks, guys; I've used that dialog before, but it's been so long I'd forgotten about it.Now if I could just do the same for Microsoft.CSharp.RuntimeBinder.RuntimeBinderException... Until then, F5 it is.

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  • POP Forums will be at Mix!

    - by Jeff
    If you've never been to Mix, you're missing out on what is arguably one of the best conferences that Microsoft does. I'm not just saying that because I work here... I felt that way before, having been to most of them. The breadth of people and disciplines make it a really exciting event that pushes it well beyond the "Redmond bubble," as I like to call it. You should go.In any case, there's an Open Source Fest happening the night before Mix starts, on Monday, from 6 to 9 p.m. There will be people there representing a ton of great projects, some as enormous as Umbraco, as well as people doing SDK's, controls and other neat stuff. Best of all, you get to vote for your favorites. Unless your favorite is Orchard, because Microsoft is sponsoring that directly. Or if it's POP Forums, not because Microsoft is sponsoring it, but because that's where I work in my day job. No prizes for me! Come by and say hello. I think the app will be nearly final by then, and it's already running on MouseZoom, one of my little side projects.The quality and diversity of open source projects around the Microsoft stack just keeps getting better. Our platform is also pretty great at running stuff we don't make. This will be a pretty exciting Mix. Can't wait!

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  • Is micro-optimisation important when coding?

    - by BozKay
    I recently asked a question on stackoverflow.com to find out why isset() was faster than strlen() in php. This raised questions around the importance of readable code and whether performance improvements of micro-seconds in code were worth even considering. My father is a retired programmer, I showed him the responses and he was absolutely certain that if a coder does not consider performance in their code even at the micro level, they are not good programmers. I'm not so sure - perhaps the increase in computing power means we no longer have to consider these kind of micro-performance improvements? Perhaps this kind of considering is up to the people who write the actual language code? (of php in the above case). The environmental factors could be important - the internet consumes 10% of the worlds energy, I wonder how wasteful a few micro-seconds of code is when replicated trillions of times on millions of websites? I'd like to know answers preferably based on facts about programming. Is micro-optimisation important when coding? EDIT : My personal summary of 25 answers, thanks to all. Sometimes we need to really worry about micro-optimisations, but only in very rare circumstances. Reliability and readability are far more important in the majority of cases. However, considering micro-optimisation from time to time doesn't hurt. A basic understanding can help us not to make obvious bad choices when coding such as if (expensiveFunction() && counter < X) Should be if (counter < X && expensiveFunction()) (example from @zidarsk8) This could be an inexpensive function and therefore changing the code would be micro-optimisation. But, with a basic understanding, you would not have to because you would write it correctly in the first place.

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  • Dreamweaver CS5 Test server works but cannot connect to host server through files window

    - by Toni
    I've been managing this site for a long time and update coupons on it approximately every 60 days. For some reason, I'm not having problems: I opened DW CS5 today and made the changes necessary to update coupons. I was able to connect to the host server with no problem but most of my coupon images were not showing up. DW tells me I have 70 broken links, which can't be the case because I've reviewed them. Some links work and are the same as the broken links other than the file name. Unable to figure it out, I thought maybe restarting my Mac would help. However, upon logging back into DW, I am now unable to connect to the host server. I get an FTP error notice that the file doesn't exist or there is a permissions problem. Funny thing is, I can connect successfully if I test the connection through the Site Management window. I have connected to my host server through FileZilla and see all the files there, unfortunately, I still can't get the web pages to display the coupons. Has anyone else had this issue and if so, what is the solution? I feel like this is probably a simple fix, but I cannot for the life of me determine what it is! If anyone knows a solution, I'd really appreciate the help! -Toni

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  • compiling php5.4 on macosx 10.6.8

    - by ling
    I'm trying to compile php 5.4.7 on mac osx 10.6.8. I could install it using the default procedure: ./configure \ --prefix=/usr/local \ --with-config-file-path=/usr/local/etc \ --with-apxs2=/usr/local/apache2/bin/apxs \ --with-mysql sudo make clean sudo make sudo make install But now if I try to install to compile php with the curl module it fails: ./configure \ --prefix=/usr/local \ --with-config-file-path=/usr/local/etc \ --with-curl=/usr \ --with-apxs2=/usr/local/apache2/bin/apxs \ --with-mysql sudo make clean sudo make = last lines of make output: Undefined symbols: "_CRYPTO_set_locking_callback", referenced from: _zm_shutdown_curl in interface.o _zm_startup_curl in interface.o "_CRYPTO_num_locks", referenced from: _zm_shutdown_curl in interface.o _zm_startup_curl in interface.o "_CRYPTO_get_id_callback", referenced from: _zm_startup_curl in interface.o "_CRYPTO_set_id_callback", referenced from: _zm_shutdown_curl in interface.o _zm_startup_curl in interface.o ld: symbol(s) not found collect2: ld returned 1 exit status make: * [libs/libphp5.bundle] Error 1 I read somewhere ( http://user.xmission.com/~georgeps/documentation/tutorials/compilation_and_makefiles.html ) that in this case, I should tell the compiler where to find the missing library, so that it can links the missing files. The problem is that I don't what library I should look for, is it libssl2 ?

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  • Session serialization in JavaEE environment

    - by Ionut
    Please consider the following scenario: We are working on a JavaEE project for which the scalability starts to become an issue. Up until now, we were able to scale up but this is no longer an option. Therefore we need to consider scaling out and preparing the App for a clustered environment. Our main concern right now is serializing the user sessions. Sadly, we did not consider from the beginning the issue and we are encountering the following excetion: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: org.apache.catalina.session.StandardSessionFacade I did some research and this exception is thrown because there are objects stored on the session which does not implement the Serializable interface. Considering that all over the app there are quite a few custom objects which are stored on the session without implementing this interface, it would require a lot of tedious work and dedication to fix all these classes declaration. We will fix all this declarations but the main concern is that, in the future, there may be a developer which will add a non Serializable object on the session and break the session serialization & replication over multiple nodes. As a quick overview of the project, we are developing using a home grown framework based on Struts 1 with the Servlet 3.0 API. This means that at this point, we are using the standard session.getAttribute() and session.setAttribute() to work with the session and the session handling is scattered all over the code base. Besides updating the classes of the objects stored on session and making sure that they implement the Serializable interface, what other measures of precaution should we take in order to ensure a reliable Session replication capability on the Application layer? I know it is a little bit late to consider this but what would be the best practice in this case? Furthermore, are there any other issues we should consider regarding this transition? Thank you in advance!

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  • wifi routers and concurrent devices

    - by Joelio
    We have a Linksys WRT54G WiFi router in our office which was working great when we had 5-6 folks. Now on peak days we have 10-15 people, each with a computer, smartphone, etc, and an ooma VOIP device. On average 1-2 times a day I need to go hard reboot the router, and sometimes the border router (Cox-supplied device). I assume this is just because the router cant handle this many concurrent users. So my question is can these consumer routers handle this kind of load? If not, would adding more devices solve the problem, and how close proximity can I put 2 routers without having interference problems (our office area is not that big physically)?

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  • Debugging Windows Service Timeout Error 1053

    - by Joe Mayo
    If you ever receive an Error 1053 for a timeout when starting a Windows Service you've written, the underlying problem might not have anything to do with a timeout.  Here's the error so you can compare it to what you're seeing: --------------------------- Services --------------------------- Windows could not start the Service1 service on Local Computer.   Error 1053: The service did not respond to the start or control request in a timely fashion. --------------------------- OK   --------------------------- Searching the Web for a solution to this error in your Windows Service will result in a lot of wasted time and advice that won't help.  Sometimes you might get lucky if your problem is exactly the same as someone else's, but this isn't always the case.  One of the solutions you'll see has to do with a known error on Windows Server 2003 that's fixed by a patch to the .NET Framework 1.1, which won't work.  As I write this blog post, I'm using the .NET Framework 4.0, which is a tad bit past that timeframe. Most likely, the basic problem is that your service is throwing an exception that you aren't handling.  To debug this, wrap your service initialization code in a try/catch block and log the exception, as shown below: using System; using System.Diagnostics; using System.ServiceProcess; namespace WindowsService { static class Program { static void Main() { try { ServiceBase[] ServicesToRun; ServicesToRun = new ServiceBase[] { new Service1() }; ServiceBase.Run(ServicesToRun); } catch (Exception ex) { EventLog.WriteEntry("Application", ex.ToString(), EventLogEntryType.Error); } } } } After you uninstall the old service, redeploy the service with modifications, and receive the same error message as above; look in the Event Viewer/Application logs.  You'll see what the real problem is, which is the underlying reason for the timeout. Joe

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  • Resolving real IP address out of a dynamic dns address

    - by stavnir
    I recently opened a dynamic dns user (at no-ip for that matter..) for my own personal needs and especially for ssh-ing my computer whenever I need to, without knowing it's static IP. My questions are: Am I misusing the concept of dynamic dns? Are there more appropriate methods to do what I want to do? If not, how do I resolve my router's real ip address? Firefox somehow manages to do so, nslookup and other similar commands only resolve the ip of the ddns server (e.g. no-ip.org). Trying to figure this mystery with wireshark failed miserably ;)

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  • HTTP 400 error for all websites

    - by Jason Sherman
    A couple of days ago, I started getting HTTP 400 responses from all websites. Nothing will go across port 80. However, everything works if I connect to VPN. The weird thing is, without VPN, other things still work; such as IM and anything else that doesn’t use port 80. Pinging also works. I haven’t noticed this behavior on any other computer on my network. The kicker is, if I log on as a local admin, everything works fine!!! I haven’t installed anything in the last couple weeks and I don’t remember changing any configuration. I ran Forefront and HouseCall and neither found any problems.

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  • OS X will not register newly installed network adapters

    - by Chris
    I have purchased an Edimax 7318USg and tested it on a Windows machine (works). The installation process for the software for this adapter runs smoothly. However, OS X simply does not recognize new network adapters. When you go to System Preferences/Network, a new network adapter should be present/there should be an alert. This is not the case. Why might this be? Is there a setting I may reset to force the operating system to recognize this? Thanks!

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  • How to proceed on the waypoint path?

    - by Alpha Carinae
    I'm using Dijkstra algorithm to find shortest path and I'm drawing this path on the screen. As the character object moves on, path updates itself(shortens as the object approaches the target and gets longer as the object moves away from it.) I tried to visualize my problem. This is the beginning state. 'A' node is the target, path is the blue and the object is the green one. I draw this path, from object to the closest node. In this case my problem occurs. Because 'D' node is more closer to the object than 'C' node, something like this happens: So, how can i decide that the object passed the 'D' node? Path should be look like this: One thing comes to my mind is that I use some distance variables between the two closest nodes in the route path. (In this example these are 'C' and 'D' nodes.) As the object approaches 'C' and moves away from the 'D' node at the same time, this means character passed the 'D'. However, I think there are some standardized and easy ways to solve this. What approach should I take?

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  • How can I change my language/keyboard input language system-wide temporarily?

    - by Adam Lynch
    I currently have two languages set up; English and Dutch. The only difference is in keyboard input. The Dutch one uses the French/Belgian AZERTY layout and the English one uses the Irish/English QWERTY layout (@ = Shift+'). When a Belgian colleague needs to use my computer, I switch the language to NL (Dutch) (therefore the input to AZERTY) using the language bar, but it seems to be application-specific. (I.e: After changing the input to AZERTY for my colleague, if he then clicks on another program it switches back to QWERTY for that program). Is there a way I can quickly switch between the two comprehensively yet temporarily?

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  • Vector with Constant-Time Remove - still a Vector?

    - by Darrel Hoffman
    One of the drawbacks of most common implementations of the Vector class (or ArrayList, etc. Basically any array-backed expandable list class) is that their remove() operation generally operates in linear time - if you remove an element, you must shift all elements after it one space back to keep the data contiguous. But what if you're using a Vector just to be a list-of-things, where the order of the things is irrelevant? In this case removal can be accomplished in a few simple steps: Swap element to be removed with the last element in the array Reduce size field by 1. (No need to re-allocate the array, as the deleted item is now beyond the size field and thus not "in" the list any more. The next add() will just overwrite it.) (optional) Delete last element to free up its memory. (Not needed in garbage-collected languages.) This is clearly now a constant-time operation, since only performs a single swap regardless of size. The downside is of course that it changes the order of the data, but if you don't care about the order, that's not a problem. Could this still be called a Vector? Or is it something different? It has some things in common with "Set" classes in that the order is irrelevant, but unlike a Set it can store duplicate values. (Also most Set classes I know of are backed by a tree or hash map rather than an array.) It also bears some similarity to Heap classes, although without the log(N) percolate steps since we don't care about the order.

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  • Sharing internet from a laptop to other laptop

    - by Rocky Singh
    Here is my scenario. I have two laptops with me A and B. A is getting wireless internet connection from a Router. B(no wireless) is connected to A via LAN (I can ping two laptops from each other and this is working). My goal is to connect internet in B from A via proxy. Right now I can only seeing LAN connection but internet connectivity is not there in B. Here is the screenshot of B: What settings I need to make in A computer so that B can access the Internet via A via proxy.

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  • How to get Word 2003 to make my print layout go from left to right?

    - by Shaul
    My copy of MS Word 2003 was installed on my computer with the locale set to Israel, so among other things my Normal.dot template was set up for right-to-left. I managed to fix most of the Hebrew support things so that I am working in English by default now. The only thing I haven't found a cure for is how to make the "print layout" view also go from left to right; as things are, the page flow always appears from right to left, even in English documents - IOW, page 1 appears on the right of page 2, as shown below. I can't see any obvious option to change this. How do I do it?

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  • Interfaces and Virtuals Everywhere????

    - by David V. Corbin
    First a disclaimer; this post is about micro-optimization of C# programs and does not apply to most common scenarios - but when it does, it is important to know. Many developers are in the habit of declaring member virtual to allow for future expansion or using interface based designs1. Few of these developers think about what the runtime performance impact of this decision is. A simple test will show that this decision can have a serious impact. For our purposes, we used a simple loop to time the execution of 1 billion calls to both non-virtual and virtual implementations of a method that took no parameters and had a void return type: Direct Call:     1.5uS Virtual Call:   13.0uS The overhead of the call increased by nearly an order of magnitude! Once again, it is important to realize that if the method does anything of significance then this ratio drops quite quickly. If the method does just 1mS of work, then the differential only accounts for a 1% decrease in performance. Additionally the method in question must be called thousands of times in order to produce a meaqsurable impact at the application level. Yet let us consider a situation such as the per-pixel processing of a graphics processing application. Here we may have a method which is called millions of times and even the slightest increase in overhead can have significant ramification. In this case using either explicit virtuals or interface based constructs is likely to be a mistake. In conclusion, good design principles should always be the driving force behind descisions such as these; but remember that these decisions do not come for free.   1) When a concrete class member implements an interface it does not need to be explicitly marked as virtual (unless, of course, it is to be overriden in a derived concerete class). Nevertheless, when accessed via the interface it behaves exactly as if it had been marked as virtual.

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  • Strange DNS problem [seems to be IPv6 issue]

    - by Homer J. Simpson
    Hi, I'm experiencing strange problems with my Kubuntu 9.10 when doing DNS requests from various applications. The requests are extremely slow, so loading any pages in Firefox or Konqueror, doing package installations in Kpackagemanager and other apps is really painful, while for example Opera doesnt have any problems, and ping is normally fast as well for DNS pings. I checked the proxy settings of both the used applications as well as of the general system and there are none, so to me it doesn't seem as there was something inbetween.. Does anybody have an idea on what to check for possible problem sources or how to solve this ? I'm behind a DSL home router which does the DHCP (and works well with my other computer). Any kind of advice would be really helpful. Edit: It seems to be some kind of IPv6 problem, as I could get it to work by disabling IPv6 explicitly in Firefox. Is there a general solution to this ?

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  • How do http proxies determine https traffic with a single port?

    - by badunk
    If a proxy receives the tcp packet, then the destination ip address and port are that of the proxy. In that case, I imagine the only way a proxy can still resolve the intended destination is either through routing the source ip address/port or through the host field in the http header. Is this correct? In both Fiddler and Charles http proxies, I noticed that the tool accepts both http and https connections through a single port that you can specify. What do these tools do to tell the difference between the two types of connections?

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  • How do I get Chrome to not try to open in Windows 8 mode?

    - by Citrus Rain
    It's not that I'm trying to make it more like 7. That's not the problem. My problem is that whenever I click the Google Chrome icon on my taskbar or even the desktop, Windows brings up this screen-spanning message box saying that my resolution is too low to launch run Google Chrome, and to set my computer to a higher resolution. (I can't.) It then continues to open Chrome correctly after I hit close. This also happens when I click a link in an external program like skype or psi.

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  • ipv6 auto configuration not working in ubuntu natty

    - by allan ruin
    In win7, my computer can automatically get a IPV6 global address and use ipv6 network, but in ubuntu natty, I can't find out how to let stateless configuration work. My network is a university campus network,so I don't need tunnels. I think if one thingg can silently and successfully complished in windows it shouldn't be impossible in linux. I did can manually edit /etc/network/interfaces and use a static ipv6 address, and I can use ipv6 this way, but I just want to use auto-configuration. I found this post: How to disable autoconfiguration on IPv6 in Linux? and try sudo sysctl -w net.ipv6.conf.all.autoconf=1 sudo sysctl -w net.ipv6.conf.all.accept_ra=1 but no luck

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  • How to run an Application as another user?

    - by takpar
    I use krusader for file management stuff. the problem is that apache's DocumentRoot should be under chown www-data:www-data /path/to/www. so using krusader (which is run under my account) I've not write access to /path/to/www while I really need. I don't know how other developers can continue doing things with such a restriction! I wondered if I could run krusader as www-data then I will be able to easily play with files. but using su - www-data asked me for www-data's password!! So, how can I run an application (like krusader) as another user (like www-data) in Gnome? or is there any other solution for my case? (tough I'm really curious to know the answer!) keep in mind that I know I can run it as root! but this will cause some permission problems when using cp and mkdir, you know. PS: sudo and gksudo did not help: $ gksudo -u -www-data krusader No protocol specified krusader: cannot connect to X server :0.0 Final Note: according the best answer, i did chmod u+w /path/to/www and my problem solved. but i still has not been succeeded in opening krusader as another user!

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  • How can I recover [data from] my failing USB key?

    - by moe37x3
    I have a Corsair Flash Voyager USB key, and it's almost completely failed. When I plug it into my [WinXP] computer, the OS mounts it and open up explorer to the drive's root directory. However, if I try to copy any data off, I get an error message saying that the device is not there. If I leave it plugged in, the OS seems to oscillate between seeing it and not seeing it, since the "Safely Remove Hardware" tray icon appears and disappears every few seconds. The damage was probably caused by my abuse, either from plugging it in with my keys hanging off of it or from losing the cap and keeping it in my pocket uncapped. Is there anything I can do to save the data from it or even rehabilitate the drive?

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  • Breadcrumbs in a modern web application, make sense? [on hold]

    - by Xtreme Biker
    I'm currently beginning with the development of a new web application. The whole web application is going to be bookmarkable and all the pages accesible via GET requests and url parameters. Having said that, let's suppose I've got three entities in my application, Customer, Team and City. Each Customer and Team belong to a city and I've got a city-detail page which displays the detail for a concrete city. So next navigation cases are possible: Customers - Customer detail (id=2) - City detail (id=3) Football teams - Team detail (id=5) - City detail (id=3) Cities - City detail (id=3) There are three possible ways of ending up in a city detail view. My question is, does it make sense to implement a breadcrumb to show such a history, having it available in the browser itself? Would it be more appropiate to show a breadcrumb with the last case, no matter where we're coming from (hierarchical breadcrumb)? That's what Jakob Nielsen points out here: Offering users a Hansel-and-Gretel-style history trail is basically useless, because it simply duplicates functionality offered by the Back button, which is the Web’s second-most-used feature. A history trail can also be confusing: users often wander in circles or go to the wrong site sections. Having each point in a confused progression at the top of the current page doesn’t offer much help. Finally, a history trail is useless for users who arrive directly at a page deep within the site. Also, even if the history trail seems the most natural way to implement it, it requires an extra effort to keep the whole track being HTTP a stateless mean.

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  • Ubuntu Froze Keyboard and mouse (laptop)

    - by fernando
    something similar to what happened to me was this post Updates kill Keyboard and mouse. unfortunately I'm stuck there. I also read on a couple other threads that I should go and use recovery mode, but when i select the option from GRUB it stops at a certain point, the screen that will allow me to fix packages won't appear. i decided to diagnose the computer, and test the RAM; so far everything seems to be going well. but this whole thing happened when I was doing an update around 230mb's... i still havent found a solution to the frozen Keyboard and mouse (trackpad). but if all else fails can i just reinstall Ubuntu? would that fix the issue? what else can I try? btw, I'm not not great with coding, so if there is anything that I need to type and put correct syntax or anything please guide me through it. I've had Ubuntu literally for 1 day, and this happens. any suggestions would be appreciated.

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