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• Spring - using static final fields (constants) for bean initialization

  - by lisak

  Hey, is it possible to define a bean with the use of static final fields of CoreProtocolPNames class like this: <bean id="httpParamBean" class="org.apache.http.params.HttpProtocolParamBean"> <constructor-arg ref="httpParams"/> <property name="httpElementCharset" value="CoreProtocolPNames.HTTP_ELEMENT_CHARSET" /> <property name="version" value="CoreProtocolPNames.PROTOCOL_VERSION"> </bean> public interface CoreProtocolPNames { public static final String PROTOCOL_VERSION = "http.protocol.version"; public static final String HTTP_ELEMENT_CHARSET = "http.protocol.element-charset"; } If it is possible, what is the best way of doing this ?

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• Error when using --static option with macrubyc

  - by Jakub Hampl

  I want to create a binary executable for a relatively simple script that would not require people to install macruby or HotCocoa. The script is here. I've understood that I want to use the --static option for the compiler and I'm using the following command: macrubyc -o postprocessor --static postprocessor.rb I get the following error: ld: library not found for -lLLVMBitWriter collect2: ld returned 1 exit status Error when executing `/usr/bin/g++ -o "postprocessor" -arch x86_64 -L/Library/Frameworks/MacRuby.framework/Versions/0.6/usr/lib -lmacruby-static -L/usr/local/lib -lpthread -lffi -lm -lLLVMBitWriter -lLLVMX86CodeGen -lLLVMX86Info -lLLVMSelectionDAG -lLLVMAsmPrinter -lLLVMJIT -lLLVMExecutionEngine -lLLVMCodeGen -lLLVMScalarOpts -lLLVMTransformUtils -lLLVMipa -lLLVMAnalysis -lLLVMTarget -lLLVMMC -lLLVMCore -lLLVMSupport -lLLVMSystem -lpthread -ldl -lxml2 -lobjc -lauto -licucore -framework Foundation "/var/folders/wU/wUGgoG1JGeKBgwalWLPMAU+++TI/-Tmp-/main-72203.o" "./postprocessor.o"' What should I do to get this running?

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• How to link static libs (archives) to an empty dynamic lib with gcc4

  - by user360607

  Greetings all! I'm using gcc on linux to create a shared library. The library itself has no code but links to a couple of static libraries(archives) also built using gcc. I need to export the static libs' symbols through my shared library. What happens is that the resulting shared lib is too small and it actually does not contain any of the symbols provided by the static libs mentioned above. I also tried with a map of exported symbols but that did not help at all. Could any of you suggest a solution! 10x in advance

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• F# static member

  - by HeMan

  I was working through the PDC 2008 F# videos and seem to run into a problem type StockAnalyzer (lprices, days) = let prices = lprices | Seq.map snd | Seq.take days static member GetAnalyzers(tickers, days) = tickers | Seq.map loadPrices | Seq.map (fun prices - new StockAnalyzer(prices, days)) member s.Return = let lastPrice = prices |> Seq.nth 0 let startPrice = prices |> Seq.nth (days - 1) lastPrice / startPrice - 1. I am getting an error at the static. GetStockPrices.fs(31,6): error FS0010: Unexpected keyword 'static' in binding. Expected incomplete structured construct at or before this point or other token. Does anyone know if they have changed the syntax or can spot what I am doing wrong

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• Mixed static and dynamic link on Mac OS

  - by barbaz

  I want to use gcc to produce a shared library, but i want to link some other libraries it depends on statically. Now to produce the "standard" dynamically linked output file i use gcc -dynamiclib *.o -lfoo -lbar -o outfile which would be gcc -shared *.o -lfoo -lbar -o outfile on for a binutils ld on a linux system. Now if i want libfoo and libbar to be linked statically, I can name the static libraries directly gcc -dynamiclib *.o /usr/lib/libfoo.a /usr/lib/libbar.a -o outfile however, that way i have to look for the library files myself. GNU binutils ld supports this: gcc -shared *.o -l:libfoo.a -l:libbar.a -o outfile but apple's ld doesnt. Is there a way to make apple's ld look for the static libraries himself? If not, is there another way that would avoid naming the exact location of the archives, e.g. producing an intermediate output file out of the object files requiring libfoo and libbar with the -static switch and linking that file together with the remaining objectfiles to create the dynamic object?

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• Process for linking static ObjC libraries in XCode

  - by madmik3

  I'm trying to link to a static library and I keep getting linker errors. I've found a few sites that post examples but I have not been able to see what I am doing wrong. First I create a project that will link to my lib add existing files find my .xcodeproj file select "Copy items into destination groups folder"... Select my host project as Add To Targets. Then I add a direct dependency to my host app expand targets double click MyHost.app click + under direct dependencies select my lib Then I set build flags double click MyHost application icon in Groups and Files. click the build tab then I set the OtherLinerFlag to -ObjC then I set Header Search Paths to my header file location for my static library. I pass the compile stage but any classes in my static lib cause linker error: literal-pointer@_OBJC@_cls_refs@SomeClass in MyHost.o thanks!

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• Creating a project, from Makefile to static/dynamic libraries in UNIX

  - by Sasha

  Guys, would you describe a few things about c++ building blocks, on unix. I want to create an application that links against static libs and dynamic libs (.so). Question 1: How do I create static library using gcc/g++ ?How do I make my app link against it. Question 2: How to specify it in the makefile, linking against static and dynamic libs, assuming that both libraries have header files Summary: I have been using makefiles and libraries for years, written by someone else. Thus every time I modified it, I simply cut-and-pasted things around, without really understanding it. Now I want to get down to the ground and understand the building/linking/Creating Makfile process in-depth. What is a good book describing these concepts in intimate details? Thanks

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• Best way to get an Application Context into a static method in Android

  - by Slapout

  I'm working on an Android application that has several Activities. In it I have a class with several static methods. I would like to be able to call these methods from the different Activities. I'm using the static methods to load data from an xml file via a XmlResourceParser. To create a XmlResourceParser requires a call on the Application Context. So my question is, what is the best way to get a reference to the Application Context into the static methods? Have each Activity get it and pass it in? Store it somehow in a global variable?

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• C# Using singleton instead of a global static instance

  - by Farstucker

  I ran into a problem today and a friend recommended I use a global static instance or more elegantly a singleton pattern. I spent a few hours reading about singletons but a few things still escape me. Background: What Im trying to accomplish is creating an instance of an API and use this one instance in all my classes (as opposed to making a new connection, etc). There seems to be about 100 ways of creating a singleton but with some help from yoda I found some thread safe examples. ..so given the following code: public sealed class Singleton { public static Singleton Instance { get; private set; } static Singleton() { Instance = new Singleton(); } } How/Where would you instantiate the this new class and how should it be called from a separate class? Thanks for your help.

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• d2: strange lowering of protection and possible misbehavior in static imports

  - by modchan

  Consider there is moda.d: module moda; private struct modb {}; And modb.d: module modb; private import moda; And modmain.d: module modmain; static import moda; static import modb; void main() { modb v; // should NOT compile, should it? } I don't know why, but moda.modb is visible in both modmain and modb, while, as far as I understand, it should not - both due to moda being imported as static and moda.modb being private. Or should? Have I run into dmd bug or it's planned behaviour I hadn't understood?

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• Replacing a website on a Tomcat Server with a static HTML website

  - by Ashin Mandal

  I made a small static website for my client and now they want me to replace their present dynamic website with the static one. They have Ubuntu with SSH installed on the remote location. Their existing website is running on a Tomcat6 server and the site root is in "/var/lib/tomcat6/webapps/ROOT/". My website consists of just static HTML pages. How can I reconfigure/ replace the present website with the one I made? Should I just stop the server and replace the files in the site root with my files?

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• C++ static classes & shared_ptr memory leaks

  - by HardCoder1986

  Hello! I can't understand why does the following code produce memory leaks (I am using boost::shared_ptr with static class instance). Could someone help me? #include <crtdbg.h> #include <boost/shared_ptr.hpp> using boost::shared_ptr; #define _CRTDBG_MAP_ALLOC #define NEW new(_NORMAL_BLOCK, __FILE__, __LINE__) static struct myclass { static shared_ptr<int> ptr; myclass() { ptr = shared_ptr<int>(NEW int); } } myclass_instance; shared_ptr<int> myclass::ptr; int main() { _CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF | _CRTDBG_CHECK_ALWAYS_DF | _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG)); return 0; }

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• Add static const data to a struct already defined

  - by Kyle

  Since static const data inside a class is really just namespace sugar for constants I would think that struct A { float a; struct B { static const int b = a; }; }; would be equivalent to struct A { float a; }; struct A::B { static const int b = a; }; or something similar. Is something like this possible in C++? It would be useful for me to be able to tag class definitions that I'm pulling in from third party libraries with information like this.

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• Static dictionary in .Net Thread safety

  - by Emmanuel

  Reading msdn documentation for dictionaries it says : "Public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe." Those this mean that with a dictionary such as this : static object syncObject = new object(); static Dictionary<string,MyObject> mydictionary= new Dictionary<string, MyObject>(); Is doing something like the code below unnecessary? lock (syncObject) { context = new TDataContext(); mydictionary.Add("key", myObject); }

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• static effect on python

  - by fatai

  how we can construct static effect on python instead of using class and global ? not like that one : global a a = [] #simple ex ; fonk ( a , b , d) x = 1 a.append ( x) EDIT: I want to create temporary memory , if I exit the function namely fonk , I want to save change as list on temporary memory . We can do that demand only put static keyword in front of data type but in python , we dont have static, so I want that effect in python . Therefore , how can I do ? As above code say "a" represents temporary memory

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• Force to reimplement a static function in inherit classes

  - by pacopepe

  Hi, I have a program in C++ with plugins (dynamic libs). In the main program, I want to execute a static function to check if i can create a object of this type. An example without dynamic libs (aren't neccesary to understand the problem): #include "libs/parent.h" #include "libs/one.h" #include "libs/two.h" int main(int argc, char * argv[]) { Parent obj; if (One.match(argv[1])) { obj = new One(); else if (Two.match(argv[1])) { obj = new Two(); } Now, i have a interface class named Parent. All plugins inherit from this class. Ideally, I have a virtual static function in Parent named match, and all the plugins need to reimplement this function. The problem with this code is that i can't do a static virtual function in C++, so i don't know how to solve the problem. Sorry for mi english, i did my best

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• Access a static variable by $var::$reference

  - by chuckg

  I am trying to access a static variable within a class by using a variable class name. I'm aware that in order to access a function within the class, you use call_user_func(): class foo { function bar() { echo 'hi'; } } $class = "foo"; all_user_func(array($class, 'bar')); // prints hi However, this does not work when trying to access a static variable within the class: class foo { public static $bar = 'hi'; } $class = "foo"; call_user_func(array($class, 'bar')); // nothing echo $foo::$bar; // invalid How do I get at this variable? Is it even possible? I have a bad feeling this is only available in PHP 5.3 going forward and I'm running PHP 5.2.6. Thanks.

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• How to initialize static const char array for ASCII codes [C++]

  - by Janney

  I want to initialize a static const char array with ASCII codes in a constructor, here's my code: class Card { public: Suit(void) { static const char *Suit[4] = {0x03, 0x04, 0x05, 0x06}; // here's the problem static const string *Rank[ 13 ] = {'A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'}; // and here. } However i got a whole lot of errors stating that 'initializing' : cannot convert from 'char' to 'const std::string *' 'initializing' : cannot convert from 'int' to 'const std::string *' please help me! Thank you so much.

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• IIS serving static content gives 503 at random

  - by Steffen

  We're having a few issues with our image server. It's a Win 2008 running IIS 7.5 and it only serves static content: images. It has run without issues for quite a while, until recently when we disabled Output Caching, as we noticed having it enabled meant it sent no-cache host-headers to the clients (forcing them to fetch the images from the server every time) We've read quite a bit about it, and it seems IIS just works that way - either you use Output Caching or you get to use cache host-headers. Anyway having disabled the Output Cache, we now experience random 5 minutes intervals, where all requests just get a 503 Service Unavailable. During this period the "Files cached" performance counter staggers (neither increased nor decreased) and after the period all caches are flushed. You might find it weird I talk about caching, since we disabled Output Caching. The thing is we changed the ObjectTTL parameter in registry, so we cache files for 3 minutes (which has worked very well, our Disk I/O dropped significantly) So even with Output Caching disabled, we're still caching plenty of files - if we could just get rid of the random 503 it'd be perfect :-D We don't get any messages in the Windows event log during these 503 intervals, so we're pretty stumped as to what to do. Any ideas are very welcome :-)

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• nginx+passenger +static websites= problems

  - by Eugene K

  I've got a Rails app that nginx serves through passenger. I'd also like to serve some static content for a different domain name. But when I add another server block to my config, both websites become unavailable returning HTTP 204. What have I done wrong? What can I do to fix it? Here's the http block of my nginx.conf: https://gist.github.com/4243256 Here's what I added : server { listen 80; server_name website2; root /var/www/website2; location / { index index.html; } } It's going to be a Rails app as well at some point in the future (though I'm not really sure about that, maybe I'm going to use a different back-end solution.) Either way, I don't want anything dynamic to eat away the resources just yet. As of now, this website consists of nothing but index.html and stylesheet.css files in the root directory. What should I do? Thank you in advance. Sincerely yours, Eugene.

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• access an IP restricted service from a dynamic IP (Broadband modem) on a windows machine

  - by Joel Alenchery

  Hi, I dont know if this is the correct place to ask this question but here goes .. (please note that I am pretty much a newbie in terms of networking and I work primarily on the windows platform) I have been working on accessing and consuming some web services in C#/ASP.Net, these web services that I consume are IP restricted. Currently they allow access only from my work network (we have a static ip set up through which all our internet requests are routed). Every now and then we have people who go out and about and are stuck with using a usb dongle based internet connection and hence are not able to now access these web services that they are working on. What I would like to do is to provide some way for these remote workers to access the IP restricted web services using the static ip at our office. For example when the remote worker tries to access a service say http://exampleService.com .. the request gets routed to some box at our office and then out to the actual service. That way the service always sees the static ip of the office and not the dynamic ip that the remote user is actually using. I have done a fair bit of googling and its difficult to search for it as most of the results come back for dynamic DNS which is not really what I am looking for. I have also looked at a couple of posts on here namely Accessing IP restricted server from dynamic IP which does provide some insight but the fellow seems to have access to the source that does the ip restriction and is able to change the restrictions. In my case i dont have that access. another one that looked interesting was Static IP for dynamic IP the first answer seems exactly what I need but I dont know how I would go about doing the same on a windows machine. any help would be really appreciated. (am sorry about being soo noob-ish) PS: Right now everyone is using RDC/LogMeIn to access an internet connected machine in the office to manually check the webservice and getting work done. Which is a very tedious process.

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• access an IP restricted service from a dynamic IP (Broadband modem) on a windows machine

  - by Joel Alenchery

  Hi, I dont know if this is the correct place to ask this question but here goes .. (please note that I am pretty much a newbie in terms of networking and I work primarily on the windows platform) I have been working on accessing and consuming some web services in C#/ASP.Net, these web services that I consume are IP restricted. Currently they allow access only from my work network (we have a static ip set up through which all our internet requests are routed). Every now and then we have people who go out and about and are stuck with using a usb dongle based internet connection and hence are not able to now access these web services that they are working on. What I would like to do is to provide some way for these remote workers to access the IP restricted web services using the static ip at our office. For example when the remote worker tries to access a service say http://exampleService.com .. the request gets routed to some box at our office and then out to the actual service. That way the service always sees the static ip of the office and not the dynamic ip that the remote user is actually using. I have done a fair bit of googling and its difficult to search for it as most of the results come back for dynamic DNS which is not really what I am looking for. I have also looked at a couple of posts on here namely http://serverfault.com/questions/187231/accessing-ip-restricted-server-from-dynamic-ip which does provide some insight but the fellow seems to have access to the source that does the ip restriction and is able to change the restrictions. In my case i dont have that access. another one that looked interesting was http://serverfault.com/questions/136806/static-ip-for-dynamic-ip the first answer seems exactly what I need but I dont know how I would go about on a windows machine. any help would be really appreciated. (am sorry about being soo noob-ish) PS: Right now everyone is using RDC/LogMeIn to access an internet connected machine in the office to manually check the webservice and getting work done. Which is a very tedious process.

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• Windows 2008 R2 forgets static IP configuration after reboot

  - by Andrew

  I've got an issue where a Windows 2008 R2 Standard (SP1) server loses its static IP configuration upon a reboot. It's a sysprep'd image. The following steps reproduces the problem: Using the SAC, set the IP using 'i' Use the Win32 EnableStatic() method to set an IP (and then SetGateways()) through PowerShell Reboot The machine boots up with the following configuration: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Link-local IPv6 Address . . . . . : [...] Autoconfiguration IPv4 Address. . : 169.254.152.31 (incorrect) Subnet Mask . . . . . . . . . . . : 255.255.0.0 (incorrect, was set to /24) Default Gateway . . . . . . . . . : 1.1.1.1 (correct) Occasionally, the gateway is also incorrect (0.0.0.0) The images have a script that runs 'netsh int ip reset' after sysprep finishes (before the reboot), so it appears that does not solve the issue. (the problem also happens without this step) After the reboot, using 'i' on the SAC resolves the issue permanently. (But I'd like to know the root cause as having to run 'i' again isn't ideal)

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• Static file serving only works if root is a subfolder under public

  - by lulalala

  I am trying to serve static cache files using nginx. There are index.html files under the rails_root/public/cache directory. I tried the following configuration first, which doesn't work: root <%= current_path %>/public; # $uri always contains one slash(the first slash but not the last) try_files /cache$uri/index.html /cache$uri.html @rails; This give error: [error] 4056#0: *13503414 directory index of "(...)current/public/" is forbidden, request: "GET / HTTP/1.1" I then tried root <%= current_path %>/public/cache; # $uri always contains one slash(the first slash but not the last) try_files $uri/index.html $uri.html @rails; And to my surprise this works. Why is it that I can do the latter not the former( since they point to the same location) The permissions of the folders are: 775 public 755 cache 644 index.html The thing is that my favicon sitting under public/ is served correctly: # asset server server { listen 80; server_name assets.<%= server_name %>; expires max; add_header Cache-Control public; charset utf-8; root <%= current_path %>/public; }

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• Static Network configuration with bridge in CentOS 6.2

  - by Kyle

  I have a server with CentOS 6.2 installed, I want to use it as a VM host to run some windows installations for development purposes. I wanted to be able to directly RDP and serve websites from IIS on these windows server installations, so I figured I would set it up as bridged networking. I have been struggling with this all morning, usually the result being that when I brought up the bridge interface all network connectivity to the CentOS would go away, however, I think I finally have that all figured out. However, here's what happens. The eth0 and br0 interfaces are defined in /etc/sysconfig/network-scripts with ifcfg-eth0 and ifcfg-br0. I DO NOT have ifup or ifdown or any other files for these interfaces, I have not found if they are needed. I can login and use firefox to browse the web, however, running ifconfig reveals that my eth0 does not have an IPAddress, but the br0 does. I can actually RDP into the Windows installation, and browse the internet from there as well, but I cannot directly connect(via putty, vnc, nor viewing web pages) to the CentOS box. Any idea what's up? ifcfg-eth0 DEVICE=eth0 BOOTPROTO=none IPADDR=192.168.1.20 GATEWAY=192.168.1.1 NETMASK=255.255.255.0 NETWORK=192.168.1.0 ONBOOT=yes BRIDGE=br0 ifcfg-br0 DEVICE=br0 TYPE=Bridge BOOTPROTO=static DNS1=192.168.1.1 DNS2=8.8.8.8 GATEWAY=192.168.1.1 IPADDR=192.168.1.2 NETMAS=255.255.255.0 ONBOOT=yes I know some of the options are inconsistent (DNS and BOOTPROTO) because I tried changing those in the eth0 file to make it work, and the changes haven't adversly affected web browsing or the other functionality Thank you!

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