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  • Get derived class type from a base's class static method

    - by Marco Bettiolo
    Hi, i would like to get the type of the derived class from a static method of its base class. How can this be accomplished? Thanks! class BaseClass { static void Ping () { Type t = this.GetType(); // should be DerivedClass, but it is not possible with a static method } } class DerivedClass : BaseClass {} // somewhere in the code DerivedClass.Ping();

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  • Declare a Dictionary inside a static class

    - by Ngu Soon Hui
    How to declare a static dictionary object inside a static class? I tried public static class ErrorCode { public const IDictionary<string , string > ErrorCodeDic =new Dictionary<string, string>() { {"1","User name or password problem"} }; } But the compiler complains that "A const field of a reference type other than string can only be initialized with null".

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  • Static member variable containing object instances

    - by tom
    I have the following: function Preferences() { } Preferences.players = { 'player1': new Player() } players is a static member variable of Preferences and I'm trying to make it an object containing an instance of a Player. However, it doesn't appear to let me do this. It seems like it will allow me to define players if I make it a non-static member variable however. Like so: function Preferences() { var players = { 'player1' : new Player() } } Is it possible to create a static member variable containing instances of an object in JS?

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  • turning a project into a static library

    - by numerical25
    I checked out the microsoft documents. it shows how to create a static library upon creation of the project. but not necessarily on how to convert a previously made project, into a static library. So my question is, where do I go to turn my previously made project, into a static lib. so I can include it in my other projects

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  • Extension methods on a static object

    - by Max Malygin
    I know (or so I hear) that writing extension methods for a single stand alone .net class (not an implementation of IEnumerable) is potential code smell. However, for the sake of making the life easier I need to attach a method to the ConfigurationManager class in asp.net. It's a static object so this won't work: public static List<string> GetSupportedDomains(this ConfigurationManager manager) { //the manager needs to be static. } So the question is - is it possible to write an extension method for a static class in .net?

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  • Create Static Library iOS Error

    - by bit-whacker
    This is FIrst time i try to create Cocoa Touch Static Library and follow these steps. Create New Project with Cocoa Touch Static Library named it By default i got single class with Demo.h and Demo.m. 2.Create a public function in .h and implement it in .m. 3.Select iOS Device and press cmd + B. 4.Copy Demo.a from products and the .h file drop it in my iOS App where i want to use it. 5.Then Import Demo.h and try to call the function that i wrote. Issue When try to Run the project showing this error. ld: warning: ignoring file /Users/Zenga/Documents/iOS/Static Library/myAppwithLib/Demo.a, file was built for archive which is not the architecture being linked (i386): /Users/Zenga/Documents/iOS/Static Library/myAppwithLib/Demo.a Undefined symbols for architecture i386: "_OBJC_CLASS_$_Demo", referenced from: objc-class-ref in ViewController.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) Please help if anyone have any idea about it.

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  • Is it possible for a parent to use a child's constant or static variables from inside a static metho

    - by ryeguy
    Below is an example of what I'm trying to do. The parent can't access any of the child's variables. It doesn't matter what technique I use (static or constants), I just need some kind of functionality like this. class ParentClass { public static function staticFunc() { //both of these will throw a (static|const) not defined error echo self::$myStatic; echo self::MY_CONSTANT; } } class ChildClass extends ParentClass { const MY_CONSTANT = 1; public static $myStatic = 2; } ChildClass::staticFunc();

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  • Static referencing error

    - by maxflow
    public class HelloWorld { public static void main(String [] args) { char[] b = {'a', 'b', 'a', 'c'}; int p = 4; deleteRepeats(b, p); } public void deleteRepeats(char[] a, int size) { int currentElement; currentElement = 0; do { for (int i = currentElement; i < size-1; i++) { if (a[currentElement] == a[i+1]) a[i+1] = ' '; } currentElement++; } while (currentElement < size-1); } } I get the error: non-static method deleteRepeats(char[],int) cannot be referenced from a static context deleteRepeats(b,p); Can someone tell me what this means? I tried removing "static" from the main method, but I get the error: Exception in thread "main" java.lang.NoSuchMethodError: main. Thanks in advance

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  • django : Serving static files through nginx

    - by PlanetUnknown
    I'm using apache+mod_wsgi for django. And all css/js/images are served through nginx. For some odd, reason when others/friends/colleagues try accessing the site, jquery/css is not getting loaded for them, hence the page looks jumbled up. My html files use code like this - <link rel="stylesheet" type="text/css" href="http://x.x.x.x:8000/css/custom.css"/> <script type="text/javascript" src="http://1x.x.x.x:8000/js/custom.js"></script> My nginx configuration in sites-available is like this - server { listen 8000; server_name localhost; access_log /var/log/nginx/aa8000.access.log; error_log /var/log/nginx/aa8000.error.log; location / { index index.html index.htm; } location /static/ { autoindex on; root /opt/aa/webroot/; } } There is a directory /opt/aa/webroot/static/ which have corresponding css & js directories. The odd thing is that the pages show fine when I access them. I have cleared my cache/etc, but the page loads fine for me, from various browsers. Also, I don't see any 404 any error in the nginx log files. Actually the logs for nginx are not getting refreshed at all. I restarted the nginx server using root, is that incorrect ? There is a user www-data defined in the nginx configuration file. Any pointers would be great.

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  • Very long (>300s) request processing time on Apache Server serving static content from particular IP

    - by Ron Bieber
    We are running an Apache 2.2 server for a very large web site. Over the past few months we have been having some users reporting slow response times, while others (including our resources, both on the internal network and our home networks) do not see any degradation in performance. After a ton of investigation, we finally found a "Deny from none" statement in our configuration that was causing reverse DNS lookups (which were timing out) that solved the bulk of our issues, but we still have some customers that we are seeing in the Apache logs (using %D in the log format) with request processing times of 300s for images, css, javascript and other static content. We've checked all Deny / Allow statements for reoccurrence of "none", as well as all other things we know of that would cause reverse DNS lookups (such as using "REMOTE_HOST" in rewrite rules, using %a instead of %h in our log format configuration) as well as verified that HostnameLookups is set to "Off". As an aside, we've also validated that reverse DNS lookups for folks having this problem do not time out - so I'm fairly certain DNS is not an issue in this case. I've run out of ideas. Are there any Apache configuration scenarios that someone can point me to that I might be missing that would cause request times for static content to take so long only for certain users? Thank you in advance.

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  • Ubuntu second static IP, ifconfig, /etc/network/interfaces

    - by Schmoove
    I would like to add a second static IP to my local Ubuntu 11.10 desktop machine and have it automatically available after rebooting. So far I am successfully using ifconfig to to temporarily set up an alias for my primary network interface: # ifconfig eth1:0 192.168.178.3 up # ifconfig eth1 Link encap:Ethernet HWaddr c8:60:00:ef:a3:d9 inet addr:192.168.178.2 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::ca60:ff:feef:a3d9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:61929 errors:0 dropped:0 overruns:0 frame:0 TX packets:64034 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:45330863 (45.3 MB) TX bytes:28175192 (28.1 MB) Interrupt:42 Base address:0x4000 eth1:0 Link encap:Ethernet HWaddr c8:60:00:ef:a3:d9 inet addr:192.168.178.3 Bcast:192.168.178.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 Interrupt:42 Base address:0x4000 However, when I add the following to /etc/network/interfaces, the alias is not up and running as expected after a reboot: # vi /etc/network/interfaces auto eth1:0 iface eth1:0 inet static address 192.168.178.3 netmask 255.255.255.0 I would like to know what to configure to get this to work. As a side note, I am running gnome shell.

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  • Add static route through DHCP

    - by MathieuK
    I'm trying to get an OSX Lion Server to provide a static route to its clients (all OSX Lion) over DHCP. I can't get the client to actually apply the static route. So far, I've managed to get the DHCP server (BOOTPD) to actually serve the DHCP OPTION 33 (static_route) on the DHCP offers by editing /etc/bootpd.plist and adding something like: <key>dhcp_option_33</key> <data>[some base64 goes here]</data> .. and restarting the DHCP service. On the client I've managed to get the client to actually request the dhcp option by modifying and adding option 33 to the DHCPRequestedParameterList key: <key>DHCPRequestedParameterList</key> <array> ... keys snipped for brevity ... <integer>33</integer> </array> .. and rebooting the client. This makes the client request the static_route option from the DHCP server ( i can see the proper output in ipconfig getpacket en0 ) but it doesn't actually apply the rule. Has anyone ever succeeded in applying static_route options on OSX clients through DHCP?

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  • How to remove static IP from Mitel 5312 and enable DHCP

    - by jimbo
    I'm not sure this is the right forum for this question -- although I'm confident I'll be told if not! -- but I've read the fine manual (at least, such a manual as I have), I've googled and I cannot get any insight into where to even start solving this problem. I have a bunch of Mitel 5312 handsets, talking to a 3300 ICP controller. Some handsets are at a remote location, get an address from my DHCP server over there, and use the Mitel "Teleworker" extension to connect in over the Internet. The remaining handsets were set up with static IPs by a BT-supplied engineer, on the same subnet as the ICP itself. So far, so good. I have one remaining teleworker licence, and need to move a handset from the home location to the remote. I've managed to boot it and configure teleworker, but I cannot for the life of me see where I tell it to forget its static IP, and make a DHCP request. Any ideas? Should I be looking on the controller, or holding magic combinations of buttons on the handset itself? EDIT: Following some advice from Robert, below, I've broken out a spare device and reassigned the profile for this user's extension to the MAC of the new phone, and a new profile to the old MAC. Unfortunately this still doesn't get me anywhere -- the new handset now asks for the teleworker install password. I suspect I'm going to have to get a Mitel engineer involved here, since I've never been given that password... Unless anyone has any great ideas?

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  • Configure static IPv6 on Ubuntu

    - by Charles Offenbacher
    I'm trying to configure IPv6 on a dedicated Ubuntu server. My provider gave me a "/64" (whatever that is - I'm still confused) of IPv6 addresses. However, when I try to use them, I can't ping anything. What do I do? :( # ping6 ipv6.google.com PING ipv6.google.com(vx-in-x63.1e100.net) 56 data bytes From fe80::219:d1ff:fefb:42d8 icmp_seq=1 Destination unreachable: Address unreachable From fe80::219:d1ff:fefb:42d8 icmp_seq=2 Destination unreachable: Address unreachable From fe80::219:d1ff:fefb:42d8 icmp_seq=3 Destination unreachable: Address unreachable --- ipv6.google.com ping statistics --- 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2014ms # tracepath6 ipv6.google.com 1?: [LOCALHOST] 0.025ms pmtu 1500 1: fe80::219:d1ff:fefb:42d8%eth0 2000.022ms !H Resume: pmtu 1500 # cat /etc/network/interfaces # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 64.***.***.*** netmask 255.255.255.248 gateway 64.***.***.*** iface eth0 inet6 static pre-up modprobe ipv6 address 2607:F878:1:***::1 netmask 64 gateway 2607:F878:1:***(same as address)::1 # ifconfig eth0 Link encap:Ethernet HWaddr 00:19:d1:fb:42:d8 inet addr:64.***.***.*** Bcast:64.***.***.*** Mask:255.255.255.248 inet6 addr: fe80::219:d1ff:fefb:42d8/64 Scope:Link inet6 addr: 2607:f878:1:***::1/64 Scope:Global UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:52451 errors:0 dropped:0 overruns:0 frame:0 TX packets:39729 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:6817761 (6.8 MB) TX bytes:6153835 (6.1 MB) Interrupt:41 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:166 errors:0 dropped:0 overruns:0 frame:0 TX packets:166 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:31714 (31.7 KB) TX bytes:31714 (31.7 KB)

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  • Serving static content with Apache web server and Tomcat

    - by Hunter
    I've configured Apache web server and Tomcat like this: I created a new file in apache2/sites-available, named it "myDomain" with this content: <VirtualHost *:80> ServerAdmin [email protected] ServerName myDomain.com ServerAlias www.myDomain.com ProxyPass / ajp://localhost:8009 <Proxy *> AllowOverride AuthConfig Order allow,deny Allow from all Options -Indexes </Proxy> </VirtualHost> Enabled mod_proxy and myDomain a2enmod proxy_ajp a2ensite myDomain Edited Tomcat's server.xml (inside the Engine tag) <Host name="myDomain.com" appBase="webapps/myApp"> <Context path="" docBase="."/> </Host> <Host name="www.myDomain.com" appBase="webapps/myApp"> <Context path="" docBase="."/> </Host> This works great. But I don't like to put static files (html, images, videos etc.) into {tomcat home}/webapps/myApp's subfolders instead I'd like to put them the apache webserver's root WWW directory's subdirectories. And I'd like Apache web server to serve these files alone. How could I do this? So all incoming request will be forwarded to Tomcat except those that ask for a static file.

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  • Non-dynamic CMS [closed]

    - by user20457
    Some of the web sites I visit every day (news, sports, etc..), although the content changes very often (several times per day), the URLs always have .html extension, what makes me thing that the content has been generated once, and then published as a static page, rather than generated in every call, or even cached in memory. For example, the fictitious site "mysports.com" have a "futbol.html" page, and then yesterday Messi gets injured and they have another thing to put in that page, then I presume they post the new item in their CMS system, and automatically a publishing action is triggered aftewards that recreates "futbol.html" in a CDN with the new item and probably discard the oldest one. Then the ETag changes and clients will get the new page if they try to access it. (the site is fictitious but this is what I believe happened yesterday in the sports site I read) This would fit in the CQRS approach, and I presume they have a huge performance. I know lots of CMS (WP, Drupal, BlogEngine.net, DNN, etc...), but I have never seen any able of doing this, or at least, I was not aware this feautre. How are called those distributed CMS? Which are the most well known? Cheers.

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  • IP assignment in small network

    - by nooneon
    What is the best way to assign IPs in your opinion? I've got ~100 PCs, some servers and see three ways to assign IPs: Static IPs for every PC/server Static IP reservation by MAC-address in DHCP Dynamic IPs via DHCP. Of course, you can combine them, i.e. dynamic for PCs, static for servers. But, again, what is the best way? How do you do that?

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  • XCode and Instruments for memory leaks

    - by coure06
    I have tested my iphone app using XCode and instrument. I am watching the memory allocation tables, its showing me that every things is increasing i.e Bytes, Live Bytes and so on. What does it means? Am i not deallocating the objects? Can i find which objects are not deallocating using instruments?

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  • Drawable advantage over bitmap for memory in android

    - by Tabish
    This question is linked with the answers in the following question: Error removing Bitmaps[Android] Is there any advantage of using Drawable over Bitmap in Android in terms of memory de-allocation ? I was looking at Romain Guy project Shelves and he uses SoftReference for images caches but I'm unable to search where is the code which is de-allocating these Drawables when SoftReference automatically reclaims the memory for Bitmap. As far as I know .recycle() has to be explicitly called on the Bitmap for it to be de-allocated.

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  • Memory ReAllocation

    - by davispuh
    What is the right and best way to reallocate memory? for example I allocate 100 bytes with WinAPI function HeapAlloc then I fill 100 bytes of that memory with some data and now I want to add more new data at end of previous... What Should I do? Make a new allocation with more bytes and then copy old+new to new location and free old memory? Or there is some way to allocate new memory at end of old data and then copy only new data?

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  • .NET allocations profiling

    - by nimoraca
    I need a way to track all allocations in a .NET application that happen during a single step in the process of debugging my application. I mean, when I'm in the debugger, stepping through code, I would like to see for a single step what allocation took place. Is there a tool or a way to do it? I tried several memory profilers including CLR profiler, JetBrains and .NET Memory Profiler 3.5 and none of them seems to provide this kind of funcionality.

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