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• robocode engine: how to design (write) the runtime engine -- the robot world

  - by Bob

  IBM has (had) a free learn-Java program called RoboCode, in which custom robots could be written that would then do battle in a 2D space. I would like to write the environment that supports such robots, but don't know what pattern or design to use. Each robot is a thread. Each thread is given a certain (indeterminate) amount of run-time by the JRE. A robot world engine would start by building a list of the players/robots, then enter a loop that allows each player in turn to do whatever it likes: move forward, turn left, fire toward the northwest corner, whatever. Each robot is also informed of events of interest: an enemy or several enemies are within range, it has been hit by a bullet, etc. The combination of handling threads that are also event listeners (are they also producers?) confuses me; it seems that there's more to the game engine. Even some general ideas would help. TIA.

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• Using GIT Smart HTTP via IIS

  - by Andrew Matthews

  I recently read Scott Chacon's post "Smart HTTP Transport", and I was hoping that it might have become possible via IIS (windows 7) since that post was written. I haven't been able to find anything showing how it can be done, and Apache is not an option in my IIS 7 based environment. So, I'm at a loss (git daemon was foiled for me by a combination of AVG anti-virus and AD). I want to provide LDAP authenticated read/write access for selected users. So this question seems not to be relevant. Do you know of a way to provide access to GIT via IIS?

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• Calling a native callback from managed .NET code (when loading the managed code using COM)

  - by evilfred

  Hi, I am really confused by the multitude of misinformation about native / managed interop. I have a C++ exe which is NOT built using CLR stuff (it is not Managed C++ or C++/CLI and never will be). I would like to access some code I have in a C# assembly. I can access the C# assembly using COM. However, when my C# code detects an event I would like it to call back into my C++ code. The C++ function pointer to call back into will be provided at runtime. Note that the C++ function pointer is a function found in the exe's execution environment. I don't want the managed code to try and load up some DLL to call a function (there is no DLL). How do I pass this C++ function pointer to my C# code through .NET and have my C# code successfully call it? Thanks!

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• NHibernate WCF Rest IIS7 Fails with Security Exception

  - by RyanFetz

  Here is the error: System.TypeInitializationException: The type initializer for 'NHibernate.Cfg.Environment' threw an exception. --- System.Security.SecurityException: Request for ConfigurationPermission failed while attempting to access configuration section 'hibernate-configuration'. To allow all callers to access the data for this section, set section attribute 'requirePermission' equal 'false' in the configuration file where this section is declared. --- System.Security.SecurityException: Request for the permission of type 'System.Configuration.ConfigurationPermission, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessPermission.Demand() at System.Configuration.BaseConfigurationRecord.CheckPermissionAllowed(String configKey, Boolean requirePermission, Boolean isTrustedWithoutAptca) We have the trust level set to Full. Note also that we also have a web site that runs the SAME Nhibernate code and has NO issues. Only the WCF REst Web Service Application has this error? Any Thoughts as to WHY this is a problem?

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• HttpWebRequest to different IP than the domain resolves to

  - by fyjham

  Hey, Long story short an API I'm calling's different environments (dev/staging/uat/live) is set up by putting a host-record on the server so the live domain resolves to their other server in for the HTTP request. The problem is that they've done this with so many different environments that we don't have enough servers to use the server-wide host files for it anymore (We've got some environments running off the same servers - luckily not dev and live though :P). I'm wondering if there's a way to make WebRequest request to a domain but explicitly specify the IP of the server it should connect to? Or is there any way of doing this short of going all the way down to socket connections (Which I'd really prefer not to waste time/create bugs by trying to re-implementing the HTTP protocol). PS: I've tried and we can't just get a new sub-domain for each environment.

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• PHP stream_context_set_option SSL certificate as string

  - by Roger Thomas

  I've got a weird issue. Basically, I need to do this: $handle = stream_context_create(); stream_context_set_option($handle , 'ssl', 'local_cert', '/tmp/cert'); However. The certificate is not held as a file within the server. Rather it's an encrypted string held in a clustered database environment. So instead of the certificate being a file name pointer, its the physical content of the certificate. So instead of using the file name, I need to specify the content of the certificate instead. For example: $cert = '-----BEGIN CERTIFICATE-----.... upWbwmdMd61SjNCdtOpZcNW3YmzuT96Fr7GUPiDQ -----END CERTIFICATE-----'; Does anyone have any idea whatsoever how on earth I can do this? I'm scratching my head over this problem, but my gut instinct says it is doable. Thanks in advance everyone!

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• Rails - Help with rake task

  - by jyoseph

  I have a rake task I need to run in order to sanitize (remove forward slashes) some data in the database. Here's the task: namespace :db do desc "Remove slashes from old-style URLs" task :substitute_slashes => :environment do puts "Starting" contents = Content.all contents.each do |c| if c.permalink != nil c.permalink.gsub!("/","") c.save! end end puts "Finished" end end Which allows me to run rake db:substitute_slashes --trace If I do puts c.permalink after the gsub! I can see it's setting the attribute properly. However the save! doesn't seem to be working because the data is not changed. Can someone spot what the issue may be? Another thing, I have paperclip installed and this task is triggering [paperclip] Saving attachments. which I would rather avoid.

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• Office ribbon for WPF 4.0

  - by Arcturus

  Hi all, It is rumoured that WPF 4.0 would deliver us an out-of-the-box Office Ribbon. A new WPF Ribbon Control will be available for download shortly after the release of WPF 4. [1] Now my internet and MSDN search turned out to be fruitless, and as far as I know, it would be release after the .NET 4.0 framework would launch. My search lead me to the Office plugin ribbon controls and the CTP prereleased before the release of .net 4.0 with a limited featureset. So my question is: does anyone know if and when Microsoft will release this Office Ribbon with the framework? Or if they don't a nice press note saying that they ditched the project. Also if anyone has experience with the Ribbon I'm talking about, will this Ribbon work in a partial trusted environment? My thanks will be ever lasting! ;)

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• How to use JTA support in Tomcat 6 for Hibernate ?

  - by EugeneP

  They recommend using JTA transaction support in JEE environment. But how to configure JTA in Tomcat6 so that Hibernate Session could use it ? Starting with version 3.0.1, Hibernate added the SessionFactory.getCurrentSession() method. Initially, this assumed usage of JTA transactions, where the JTA transaction defined both the scope and context of a current session. Given the maturity of the numerous stand-alone JTA TransactionManager implementations, most, if not all, applications should be using JTA transaction management, whether or not they are deployed into a J2EE container. Based on that, the JTA-based contextual sessions are all you need to use.

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• Linking LAPACK/BLAS libraries

  - by Daniel Bremberg

  Background: I am working on a project written in a mix of C and Fortran 77 and now need to link the LAPACK/BLAS libraries to the project (all in a Linux environment). The LAPACK in question is version 3.2.1 (including BLAS) from netlib.org. The libraries were compiled using the top level Makefile (make lapacklib and make blaslib). Problem: During linking, error messages claimed that certain (not all) BLAS-routines called from LAPACK-routines were undefined. This gave me some headache but the problem was eventually solved when (in the Makefile) the order of appearance of the libraries to be linked was changed. Code: In the following, (a) gives errors while (b) does not. The linking is performed by (c). (a) LIBS = $(LAPACK)/blas_LINUX.a $(LAPACK)/lapack_LINUX.a (b) LIBS = $(LAPACK)/lapack_LINUX.a $(LAPACK)/blas_LINUX.a (c) gcc -Wall -O -o $@ project.o project.a $(LIBS) Question: What could be the reason for the undefined references of only some routines and what makes the order of appearance relevant?

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• ASP.NET Load unmanaged dll from bin folder

  - by Quandary

  Question: I use an embedded Firebird database in ASP.NET. Now, Firebird has a .NET wrapper around native dlls. The problem is, with the .NET compilation and execution process, the dlls get shadow copied to a temporary folder. Unfortunately, only the .NET dlls, and not the native dll. See http://msdn.microsoft.com/en-us/library/ms366723.aspx for details. Now, this makes it necessary to put the unmanaged dll somewhere into the system32 directory (or any other directory in the path environment variable). Now, I want to change the wrapper/native dll (opensource), so it loads the dll also if they are only in the bin folder. Now, my problem is, how can I, in .NET, load an unmanaged dll from an absolute path ? The absolute path is determined at runtime, not at compile-time...

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• How to use WSDL2Java generated files?

  - by vikasde

  I generated the .java files using wsdl2java found in axis2-1.5. Now it generated the files in this folder structure: src/net/mycompany/www/services/ The files in the services folder are: SessionIntegrationStub and SessionIntegrationCallbackHandler. I would like to consume the webservice now. I added the net folder to the CLASSPATH environment variable. My java file now imports the webservice using: import net.mycompany.www.services; public class test { public static void main(String[] args) { SessionIntegrationStub stub = new SessionIntegrationStub(); System.out.println(stub.getSessionIntegration("test")); } } Now when I try to compile this using: javac test.java I get: package net.mycompany.www does not exist. Any idea?

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• Having problems building Cairo on x64 CentOS

  - by Vnuk

  I've done this many times on 32 bit CentOS and everything went ok without a hitch. But now, on x64 CentOS, I can't get cairo to find pixman. Pixman 0.18.0 is installed in /usr/local/lib (which I believe is the usual location). Configure for Cairo 1.8.10 can't find it: checking for cairo's image surface backend feature... checking for pixman... no no checking whether cairo's image surface backend feature could be enabled... no (requires pixman-1 >= 0.12.0 http://cairographics.org/releases/) configure: error: mandatory image surface backend feature could not be enabled I've tried setting environment variable pixman_LIBS=/usr/local/lib but wihtout any luck. Any idea what is going wrong? Is it possible for me to see where is cairo's configure looking for pixman? Search paths or something like that?

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• Method to capture a screenshot of user's browser to aid in bug reporting

  - by Buzz

  I'm looking for a way to make it easy for technically unsophisticated users to submit screenshots of their browser to me, to aid in debugging web application problems. There will be a button on all pages inside a web application they can use to report problems, which I would like to submit a screenshot (among other things). http://www.snapabug.com/ is very close to what I want, but I need to be able to customize a few things that service won't let me. Production environment is LAMP. I expect there must be something Flash-based that can do this, but I've not been able to find something. Thanks!

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• Can GhostScript run in Medium Trust

  - by SkippyFire

  I am using GhostScript to generate some thumbnails of PDF pages in an ASP.NET application. I have it wrapped in this library called GhostScriptSharp that just uses DllImport to call methods in the GhostScript DLL. It looks like this wont work on a medium trust hosting environment, either because of the fact that it is calling unmanaged code, or that it looks like the library is creating files all over the place (outside my virtual directory). I ran Process Monitor and saw it trying to Read, QueryNameInformationFile, CreateFile and QueryStandardInformationFile in places like: C:\WINDOWS\system32\Halftone\Default or C:\gs\gs8.63\lib\Halftone\Default or C:\gs\font\Halftone\Default Any ideas about whether this is "fixable" to run in medium trust? If I can't use GhostScript, is there another free/open source library that WILL work in Medium trust?

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• Session bug using facebook-connect-with-authlogic in Rails

  - by Jesse

  I'm trying to follow this article: http://ryanbigg.com/2010/03/testing-facebook, but I'm stuck. I think the problem is with my session, in that the current_usermethod comes up with nil for session[:facebook_session]. According to the original authlogic, it says to use the active_record_store for sessions: # config/environment.rb config.action_controller.session_store = :active_record_store # db/schema includes create_table "sessions", :force => true do |t| t.string "session_id", :null => false t.text "data" t.datetime "created_at" t.datetime "updated_at" end The article calls for the use of cookies. I'm confused; can I use cookies and the active record sessions? I'm also confused by the use of cattr_accessor :current_user from within the User model -- current_user still goes in the application controller, right? Please help.

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• How to debug a native Java crash on Linux?

  - by Paul J. Lucas

  I've seen this question and this article on how to debug a native Java crash. The article is with respect to Windows. What are the equivalent debugging aids on Linux? Note: All I have is this crash log from a user in the field. I do not have access to the machine on which the crash occurred. Update: I am pretty sure the crash is due to JNI code we have. I never meant to imply that it was the JVM itself that was faulty. Per request, here is the crash dump (or as much of it as will fit in the 30K stackoverflow limit): # # An unexpected error has been detected by Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x06300e76, pid=9983, tid=4106996592 # # Java VM: Java HotSpot(TM) Client VM (1.6.0_03-b05 mixed mode, sharing) # Problematic frame: # V [libjvm.so+0x300e76] # # If you would like to submit a bug report, please visit: # http://java.sun.com/webapps/bugreport/crash.jsp # --------------- T H R E A D --------------- Current thread (0x0922e000): VMThread [id=9985] siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x00000008 Registers: EAX=0x00000008, EBX=0x88a829b3, ECX=0x88a829b0, EDX=0xa7d6c1dc ESP=0xf4cbba5c, EBP=0xf4cbba68, ESI=0xa7d6d1d8, EDI=0x00000404 EIP=0x06300e76, CR2=0x00000008, EFLAGS=0x00010202 Top of Stack: (sp=0xf4cbba5c) 0xf4cbba5c: a7d6c1c8 0920cc30 aa0de5c0 f4cbba98 0xf4cbba6c: 063517d7 cf8f2a20 a7d6c1c8 0920cc30 0xf4cbba7c: 0920cc30 00000000 00000000 6d224c40 0xf4cbba8c: 00000001 f4cbbbb0 0920b440 f4cbbab8 0xf4cbba9c: 061dd4df 0920cc30 f4cbbb10 f4cbbac8 0xf4cbbaac: 0633cb7e 0643b5b8 f4492968 f4cbbad8 0xf4cbbabc: 061dcd68 f4cbbaf0 0920cc30 f4cbbaf8 0xf4cbbacc: 061df31e f4cbbb10 d4cbcc2c f4cbbb08 Instructions: (pc=0x06300e76) 0x06300e66: 82 39 f2 73 34 90 8d 74 26 00 8b 02 85 c0 74 22 0x06300e76: 8b 18 80 3d 45 10 42 06 00 74 0c 89 d8 31 c9 83 Stack: [0xf4c3c000,0xf4cbd000), sp=0xf4cbba5c, free space=510k Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code) V [libjvm.so+0x300e76] V [libjvm.so+0x3517d7] V [libjvm.so+0x1dd4df] V [libjvm.so+0x1dcd68] V [libjvm.so+0x1dc3cc] V [libjvm.so+0x1d4c52] V [libjvm.so+0x1d32cc] V [libjvm.so+0x1d4229] V [libjvm.so+0x1dc82a] V [libjvm.so+0x1d1d34] V [libjvm.so+0x186125] V [libjvm.so+0x1d20bc] V [libjvm.so+0x3b2cbe] V [libjvm.so+0x3c5037] V [libjvm.so+0x3c46bc] V [libjvm.so+0x3c488a] V [libjvm.so+0x3c446f] V [libjvm.so+0x30b719] C [libpthread.so.0+0x5cb2] VM_Operation (0xf2b60728): generation collection for allocation, mode: safepoint, requested by thread 0x09449c00 --------------- P R O C E S S --------------- Java Threads: ( = current thread ) 0x092afc00 JavaThread "RawImageCache" daemon [_thread_blocked, id=10026] 0xf37d1000 JavaThread "TimerQueue" daemon [_thread_blocked, id=10022] 0x09410000 JavaThread "SunTileScheduler0Standard7" daemon [_thread_blocked, id=10021] 0x0940f000 JavaThread "SunTileScheduler0Standard6" daemon [_thread_blocked, id=10020] 0x0946fc00 JavaThread "SunTileScheduler0Standard5" daemon [_thread_blocked, id=10019] 0x0946e800 JavaThread "SunTileScheduler0Standard4" daemon [_thread_blocked, id=10018] 0x0946d400 JavaThread "SunTileScheduler0Standard3" daemon [_thread_blocked, id=10017] 0x0946c000 JavaThread "SunTileScheduler0Standard2" daemon [_thread_blocked, id=10016] 0x0946ac00 JavaThread "SunTileScheduler0Standard1" daemon [_thread_blocked, id=10015] 0x0946a000 JavaThread "SunTileScheduler0Standard0" daemon [_thread_blocked, id=10014] 0x0944a800 JavaThread "Image List Poller" [_thread_blocked, id=10012] 0x09449c00 JavaThread "Image Task Queue" [_thread_blocked, id=10011] 0xf37e3c00 JavaThread "Laf-Widget fade tracker" [_thread_blocked, id=10010] 0x094abc00 JavaThread "FileCacheMonitor" daemon [_thread_blocked, id=10009] 0xf37e3800 JavaThread "DestroyJavaVM" [_thread_blocked, id=9984] 0xf37ee400 JavaThread "Thread-6" daemon [_thread_blocked, id=10006] 0xf3a7c800 JavaThread "DirectoryMonitor.MonitorThread" daemon [_thread_blocked, id=10005] 0xf3a73800 JavaThread "AWT Watchdog" daemon [_thread_blocked, id=10004] 0xf3adb800 JavaThread "TileReaper" daemon [_thread_blocked, id=10003] 0x093c3c00 JavaThread "process reaper" daemon [_thread_in_native, id=10001] 0x093ac800 JavaThread "Timer-0" daemon [_thread_blocked, id=9999] 0x093a8c00 JavaThread "AWT-EventQueue-0" [_thread_blocked, id=9997] 0x093a8000 JavaThread "AWT-Shutdown" [_thread_blocked, id=9996] 0x09378c00 JavaThread "AWT-XAWT" daemon [_thread_blocked, id=9994] 0x09368400 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=9993] 0x09350000 JavaThread "Thread-1" daemon [_thread_blocked, id=9992] 0x0923b400 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=9990] 0x09239c00 JavaThread "CompilerThread0" daemon [_thread_blocked, id=9989] 0x09238800 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=9988] 0x09230800 JavaThread "Finalizer" daemon [_thread_blocked, id=9987] 0x0922f400 JavaThread "Reference Handler" daemon [_thread_blocked, id=9986] Other Threads: =0x0922e000 VMThread [id=9985] 0x09245000 WatcherThread [id=9991] VM state:at safepoint (normal execution) VM Mutex/Monitor currently owned by a thread: ([mutex/lock_event]) [0x09205178/0x092051a0] Threads_lock - owner thread: 0x0922e000 [0x09205638/0x09205650] Heap_lock - owner thread: 0x09449c00 Heap def new generation total 83968K, used 9280K [0x55600000, 0x5b110000, 0x5ec40000) eden space 74688K, 0% used [0x55600000, 0x55600000, 0x59ef0000) from space 9280K, 100% used [0x5a800000, 0x5b110000, 0x5b110000) to space 9280K, 0% used [0x59ef0000, 0x59ef0000, 0x5a800000) tenured generation total 1233640K, used 1233529K [0x5ec40000, 0xaa0fa000, 0xcf800000) the space 1233640K, 99% used [0x5ec40000, 0xaa0de5c0, 0x8b4af400, 0xaa0fa000) compacting perm gen total 13312K, used 13175K [0xcf800000, 0xd0500000, 0xd3800000) the space 13312K, 98% used [0xcf800000, 0xd04ddd70, 0xd04dde00, 0xd0500000) ro space 8192K, 69% used [0xd3800000, 0xd3d8f608, 0xd3d8f800, 0xd4000000) rw space 12288K, 57% used [0xd4000000, 0xd46eee98, 0xd46ef000, 0xd4c00000) Dynamic libraries: [ snip ] VM Arguments: jvm_args: -Dinstall4j.jvmDir=/home/berbmit/bin/LightZone/jre -Dinstall4j.appDir=/home/berbmit/bin/LightZone -Dexe4j.moduleName=/home/berbmit/bin/LightZone/LightZone -Dcom.lightcrafts.licensetype=ESD -Xmx2000000k java_command: com.install4j.runtime.Launcher launch com.lightcrafts.platform.linux.LinuxLauncher true false /home/berbmit/bin/LightZone/LightZone.log /home/berbmit/bin/LightZone/LightZone.log false true false true true -1 -1 20 20 Arial 0,0,0 8 500 20 40 Arial 0,0,0 8 500 -1 Launcher Type: SUN_STANDARD Environment Variables: PATH=/home/berbmit/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games USERNAME=berbmit LD_LIBRARY_PATH=/home/berbmit/bin/LightZone/jre/lib/i386/client:/home/berbmit/bin/LightZone/jre/lib/i386:/home/berbmit/bin/LightZone/jre/../lib/i386:/home/berbmit/bin/LightZone/.: SHELL=/bin/bash DISPLAY=:0.0 Signal Handlers: SIGSEGV: [libjvm.so+0x3b29c0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGBUS: [libjvm.so+0x3b29c0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGFPE: [libjvm.so+0x309ec0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGPIPE: SIG_IGN, sa_mask[0]=0x00000000, sa_flags=0x00000000 SIGILL: [libjvm.so+0x309ec0], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGUSR1: SIG_DFL, sa_mask[0]=0x00000000, sa_flags=0x00000000 SIGUSR2: [libjvm.so+0x30bef0], sa_mask[0]=0x00000000, sa_flags=0x10000004 SIGHUP: [libjvm.so+0x30b910], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGINT: [libjvm.so+0x30b910], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGQUIT: [libjvm.so+0x30b910], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGTERM: [libjvm.so+0x30b910], sa_mask[0]=0x7ffbfeff, sa_flags=0x10000004 SIGUSR2: [libjvm.so+0x30bef0], sa_mask[0]=0x00000000, sa_flags=0x10000004 --------------- S Y S T E M --------------- OS:squeeze/sid uname:Linux 2.6.35-23-generic #41-Ubuntu SMP Wed Nov 24 11:55:36 UTC 2010 x86_64 libc:glibc 2.12.1 NPTL 2.12.1 rlimit: STACK 8192k, CORE 0k, NPROC infinity, NOFILE 1024, AS infinity load average:0.67 0.54 0.36 CPU:total 8 (8 cores per cpu, 2 threads per core) family 6 model 10 stepping 5, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, ht Memory: 4k page, physical 8191552k(3359308k free), swap 1016828k(1016828k free) vm_info: Java HotSpot(TM) Client VM (1.6.0_03-b05) for linux-x86, built on Sep 24 2007 22:45:46 by "java_re" with gcc 3.2.1-7a (J2SE release)

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• sharp architecture question - no strongly typed views

  - by csetzkorn

  Hi, I am trying to get my head around the sharp architecture and used the visual studio template as described on the web: http://wiki.sharparchitecture.net/VSTemplatesAndCodeGen.ashx This is all cool. Unfortunately, I cannot add a strongly typed view as easily as I am used to ‘under’ asp.net mvc. What can I do to ‘enable’ this in VS 2008 Prof? I have also installed asp.net mvc 2.0 and would like to reflect this in my ‘vs studio sharp environment’. Any pointers would be very much appreciated. Many thanks in advance. Best wishes, Christian

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• Where is sdl-config installed on MacOS 10.6 (Snow Leopard)

  - by jmglov

  After installing SDL and SDL-devel in MacOS X 10.6 (Snow Leopard), trying to configure some source code that requires SDL yields: checking for sdl-config... no checking for SDL - version >= 1.2.0... no *** The sdl-config script installed by SDL could not be found *** If SDL was installed in PREFIX, make sure PREFIX/bin is in *** your path, or set the SDL_CONFIG environment variable to the *** full path to sdl-config. configure: error: *** SDL version 1.2.0 not found! Does anyone know where to find sdl-config? I guess I can build SDL from source, but why should I have to, when there exist pre-built packages?

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• Slow SQL Sync with Microsoft Sync Framework on Mobile Client

  - by Malkier

  Hello, we are developing an application which uses MS Sync Framework to sync data between Windows CE 6.0 with SQL CE 3.5 SP1 Clients and an SQL 2008 Database. Our major problem is a slow sync time up to 1 minute for 15 tables which are totally empty. Here's a break down of our components: Server: Sql Server 2008 15 tables with activated change tracking WCF Service with endpoint for the mobile sync (uses Sync Framework 2.0) Client (Mobile) Windows CE 6.0 NET Application using Sync Framework for Devices (CTP 1) which starts the sync As I mentioned above, the sync takes up to 1 minute without any changes and empty tables. The mobile device is in its dock. This is a deal breaker for a production environment. Does anybody have any experience in this field? Is there a way to improve things? Thanks for any responses.

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• Borland C++ builder 6 linker error

  - by david

  Hello, I am recompling a project using Borland C++ Builder 6. The recompile process failed due to linker error. The message was: "[Linker Fatal error] Fatal unable to open file ABCC.lib" I removed all references of ABCC.lib in the project option and environment options, but the same error still occurred. I even tried manually removed ABCC.lib from the .bpr file, but the error just did not go away. Also, what is the ABCC.lib? Any help is appreciated. Thanks in advance. David.

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• Getting Rails Application Running Under IronRuby Rack

  - by NotMyself

  Anyone else playing with ironruby? I have successfully got the IronRuby.Rails.Example project running on my local machine under IIS 5.1. I am now attempting to get my own demo rails site running in the same way. My web.config is slightly different from the example project. I am attempting to only use what was distributed with IronRuby 1.0 and what I have installed using gems. I am getting the following error which doesn't give me a lot to go on: D:/demo/config/boot.rb:66:in `exit': exit (SystemExit) After trying many different things, I think it is having a problem finding gems. I have attached my web config and ironrack.log. Does anyone have pointers on what I am doing wrong? Thanks! <?xml version="1.0"?> <configuration> <configSections> <!-- custom configuration section for DLR hosting --> <section name="microsoft.scripting" type="Microsoft.Scripting.Hosting.Configuration.Section, Microsoft.Scripting" requirePermission="false"/> </configSections> <system.webServer> <handlers> <!-- clear all other handlers first. Don't do this if you have other handlers you want to run --> <clear/> <!-- This hooks up the HttpHandler which will dispatch all requests to Rack --> <add name="IronRuby" path="*" verb="*" type="IronRuby.Rack.HttpHandlerFactory, IronRuby.Rack" resourceType="Unspecified" requireAccess="Read" preCondition="integratedMode"/> </handlers> </system.webServer> <system.web> <!-- make this true if you want to debug any of the DLR code, IronRuby.Rack, or your own managed code --> <compilation debug="true"/> <httpHandlers> <!-- clear all other handlers first. Don't do this if you have other handlers you want to run --> <clear/> <!-- This hooks up the HttpHandler which will dispatch all requests to Rack --> <add path="*" verb="*" type="IronRuby.Rack.HttpHandlerFactory, IronRuby.Rack" /> </httpHandlers> </system.web> <!-- DLR configuration. Set debugMode to "true" if you want to debug your dynamic language code with VS --> <microsoft.scripting debugMode="false"> <options> <!-- Library paths: make sure these paths are correct --> <!--<set option="LibraryPaths" value="..\..\..\Languages\Ruby\libs\; ..\..\..\..\External.LCA_RESTRICTED\Languages\Ruby\ruby-1.8.6p368\lib\ruby\site_ruby\1.8\; ..\..\..\..\External.LCA_RESTRICTED\Languages\Ruby\ruby-1.8.6p368\lib\ruby\1.8\"/>--> <set option="LibraryPaths" value="C:\IronRuby\lib\IronRuby;C:\IronRuby\lib\ruby\1.8;C:\IronRuby\lib\ruby\site_ruby;C:\IronRuby\lib\ruby\site_ruby\1.8"/> </options> </microsoft.scripting> <appSettings> <add key="AppRoot" value="."/> <add key="Log" value="ironrack.log"/> <!-- <add key="GemPath" value="..\..\..\..\External.LCA_RESTRICTED\Languages\Ruby\ruby-1.8.6p368\lib\ruby\gems\1.8"/> --> <add key="GemPath" value="C:\IronRuby\Lib\ironruby\gems\1.8\gems"/> <add key="RackEnv" value="production"/> </appSettings> </configuration> === Booting ironruby-rack at 4/15/2010 1:27:12 PM [DEBUG] >>> TOPLEVEL_BINDING = binding => Setting GEM_PATH: 'C:\\IronRuby\\Lib\\ironruby\\gems\\1.8\\gems' => Setting RACK_ENV: 'production' => Loading RubyGems [DEBUG] >>> require 'rubygems' => Loading Rack >=1.0.0 [DEBUG] >>> gem 'rack', '>=1.0.0';require 'rack' => Loaded rack-1.1 => Application root: 'D:\\demo' => Loading Rack application [DEBUG] >>> Rack::Builder.new { ( require "config/environment" ENV['RAILS_ENV'] = 'development' use Rails::Rack::LogTailer use Rails::Rack::Static run ActionController::Dispatcher.new ) }.to_app exit D:/demo/config/boot.rb:66:in `exit': exit (SystemExit) from D:/demo/config/boot.rb:66:in `load_rails_gem' from D:/demo/config/boot.rb:54:in `load_initializer' from D:/demo/config/boot.rb:38:in `run' from D:/demo/config/boot.rb:11:in `boot!' from D:/demo/config/boot.rb:110 from C:/IronRuby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from C:/IronRuby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from D:/demo/config/environment.rb:7 from C:/IronRuby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from C:/IronRuby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from (eval):1 from C:/IronRuby/lib/ironruby/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `instance_eval' from C:/IronRuby/lib/ironruby/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `initialize' from (eval):0 from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\RubyEngine.cs:52:in `Execute' from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\RubyEngine.cs:45:in `Execute' from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\Application.cs:68:in `Rackup' from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\Application.cs:32:in `.ctor' from D:\Dev\ironruby\ironruby-ironruby-20bc41b\Merlin\Main\Hosts\IronRuby.Rack\HttpHandlerFactory.cs:37:in `GetHandler' from System.Web:0:in `MapHttpHandler' from System.Web:0:in `System.Web.HttpApplication.IExecutionStep.Execute' from System.Web:0:in `ExecuteStep' from System.Web:0:in `ResumeSteps' from System.Web:0:in `System.Web.IHttpAsyncHandler.BeginProcessRequest' from System.Web:0:in `ProcessRequestInternal' from System.Web:0:in `ProcessRequestNoDemand' from System.Web:0:in `ProcessRequest'

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• Reputable geo-ip location Services

  - by Alan Storm

  Who are some of the reputable and/or stable geo-ip location service providers? I'm specing out an application that needs this functionality, and whenever I google geo-ip I get a ton of hits, but it's hard to tell who the legit providers are and who the fly-by-night folks are. Ideally I'd like something that can run without a call to an external API (i.e. regular database updates), but would be interested in hearing about experience with providers who offer live/http services. If it ran in PHP that would be great, but so long as it could run in a *nix environment that's fine. I'd prefer a paid service from a reputable provider than an awesome free service that could vanish tomorrow (free services are welcome, just convince me they're not going to vanish).

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• Code folding for LaTeX in Emacs

  - by ShreevatsaR

  Is there an Emacs minor-mode (or piece of elisp code) that lets you selectively hide/show environments while in LaTeX mode? For instance, I would like to move to the beginning of a long \begin{figure} block, hit a keystroke, and have the contents of that figure environment hidden from view. Similarly with \begin{proof} and so on, and ideally even with \subsections. Is this possible? I just tried hs-minor-mode, allout-mode, and outline-minor-mode, but most of them don't recognize LaTeX's environments, e.g. hs-minor-mode fails with "scan error: unbalanced parentheses". I would prefer not to have to enter explicit folding marks like {{{ as in folding-mode. [Ideally it would be great if the folding were persistent, but I see that that question doesn't have an accepted answer yet.]

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• Deploying Sinatra app on Dreamhost/Passenger with custom gems

  - by darkism

  I've got a Sinatra app that I'm trying to run on Dreamhost that makes use of pony to send email. In order to get the application up and running at the very beginning (before adding pony), I had to gem unpack rack and gem unpack sinatra into the vendor/ directory, so this was my config.ru: require 'vendor/rack/lib/rack' require 'vendor/sinatra/lib/sinatra' set :run, false set :environment, :production set :views, "views" require 'public/myapp.rb' run Sinatra::Application I have already done gem install pony and gem unpack pony (into vendor/). Afterwards, I tried adding require 'vendor/sinatra/lib/pony' to config.ru only to have Passenger complain about pony's dependencies (mime-types, tmail) not being found either! There has to be a better way to use other gems and tone down those long, ugly, redundant requires. Any thoughts?

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