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• Memory section handling error

  - by Basilevs

  I'm getting a link time error: WARNING: /home/gulevich/development/camac-fedorov/camac/linux/k0607-lsi6/camac-k0607-lsi6.o (.ctors): unexpected non-allocatable section. Did you forget to use "ax"/"aw" in a .S file? Note that for example <linux/init.h> contains section definitions for use in .S files. The code causing the error (assembly in C source): # if defined(__ELF__) # define __SECTION_FLAGS ", \"aw\" , @progbits" /* writable flag needed for ld ".[cd]tors" sections bug workaround) */ # elif defined(__COFF__) # define __SECTION_FLAGS ", \"dr\"" /* untested, may be writable flag needed */ # endif asm ( ".section .ctors" __SECTION_FLAGS "\n" ".globl __ctors_begin__\n" "__ctors_begin__:\n" ".previous\n" ); Is there any way to fix this? The idea is to put a varaible __ctors_begin__ at the beginning of a certain memory section. This code is a legacy that worked fine using a different build system and older compiler. Meaning of this assembly code explained in an answer to my previous question.

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• DLL dependant on curllib.dll - How can I fix this?

  - by haraldo

  Hi there, I'm new to developing in C++. I've developed a dll where I'm using curllib to make HTTP requests. When running the dll via depend.exe it notifies me that my dll now depends on the curllib.dll. This simply doesn't work for me. My dll is set as a static library not shared and will be distributed on its own. I cannot rely on a user having libcurl.dll installed. I thought by including libcurl into my project this is all that would be needed and my dll could be independent. If this is impossible to resolve is there an alternative method I can use to create HTTP requests? Obviously I would prefer to use libcurl. Thanks in advance.

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• Can a CWinApp be placed in a DLL?

  - by jmucchiello

  I'm updating some legacy apps to Visual Studio 10 and am in linker hell. All of these DLLs derive classes from CWinApp and use AfxGetApp() to get access to the object. When I link the DLLs I get unresolved externals that look like global static objects that would get pulled in by a normal app's main(): Shell.lib(SHELL.obj) : error LNK2001: unresolved external symbol "public: static struct CRuntimeClass const CException::classCException" (?classCException@CException@@2UCRuntimeClass@@B) Shell.lib(SHELL.obj) : error LNK2001: unresolved external symbol "public: static struct CRuntimeClass const CFrameWnd::classCFrameWnd" (?classCFrameWnd@CFrameWnd@@2UCRuntimeClass@@B) Shell.lib(SHELL.obj) : error LNK2001: unresolved external symbol "public: static class CRect const CFrameWnd::rectDefault" (?rectDefault@CFrameWnd@@2VCRect@@B) My current combination of ignore default libraries and additional libraries (the method you can easily google to find the answer to linker hell) is: msvcprtd.lib,mfc100d.lib,mfcs100d.lib,libcmtd.lib When I add nafxcwd.lib (the mfc library), these three external symbols resolve but I end up with a bunch of other duplicate symbols (requiring the use of /FORCE:MULTIPLE) and in end __argc and __argv become unresolved. So the basic question is: Can you link a DLL containing a CWinApp in VS10? How do you setup the linker to do it?

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• With wordpress, is there a statement like current_user_can except show something if a user does not

  - by zac

  I am trying to show a custom css depending on user permissions with a function like : <?php if ( !current_user_can( 'install_themes' ) ) { ?> <link media="all" type="text/css" href="<?php bloginfo( 'template_directory' ); ?>/library/styles/customAdmin.css" rel="stylesheet"> <?php } Perhaps I am being dense about this but I want to do the reverse and show specific CSS if a user can not, in this case, install_themes. I am doing it this way because the css hides parts of the admin area that I do not want hidden globally. I could probably do this with liberal use of !important in my style sheetsbut I was hoping there was an easier way to write this in the function. Or is there a way to write <?php if ( current_user_can('level_7') ) : ?> with something like if < level_7 ?

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• [C#] How to consume web service adheres to the Event-based Asynchronous Pattern?

  - by codemonkie

  I am following the example from http://msdn.microsoft.com/en-us/library/8wy069k1.aspx to consume a web service implemented (by 3rd party) using the Event-based Asynchronous Pattern. However, my program needs to do multiple calls to the DoStuffAsync() hence will get back as many DoStuffCompleted. I chose the overload which takes an extra parameter - Object userState to distinguish them. My first question is: Is it valid to cast a GUID to Object as below, where GUID is used to generate unique taskID? Object userState = Guid.NewGuid(); Secondly, do I need to spawn off a new thread for each DoStuffAsync() call, since I am calling it multiple times? Also, would be nice to have some online examples or tutorials on this subject. (I've been googling for it the whole day and didn't get much back) Many thanks

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• show definition (browse) in *.pdb of *.dll file

  - by ala

  I have built a Library project (DLL) in .NET. And sometimes I use the DLL along with its PDB file as a reference in some other projects. Now in the new project, I cant browse through the code of the DLL to debug. I can only see the definitions of class/methods/variables. That's by using "show definition" by browsing through the "class view" However, only in case of an exception I the contents of the DLL opens and I could see the entire code of the DLL from the new project. How could I see the contents (code) of the DLL before an exception occur?

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• Mapping Hilbert values to 3D points

  - by Alexander Gladysh

  I have a set of Hilbert values (length from the start of the Hilbert curve to the given point). What is the best way to convert these values to 3D points? Original Hilbert curve was not in 3D, so I guess I have to pick by myself the Hilbert curve rank I need. I do have total curve length though (that is, the maximum value in the set). Perhaps there is an existing implementation? Some library that would allow me to work with Hilbert curve / values? Language does not matter much.

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• how to debug java mail

  - by voipp

  My goal is to debug my programm, that uses java mail library(including javax.mail and com.sun.mail). So i decided first to download java mail sources and compile it with option -g. I go to the java mail sources and binaries , downloaded them. Somehow sources store in jar but not just zip. Ok. Then i decided to decompile jar into zip with JAD plugin in eclipse. After decompiling i receive empty directory. I downloaded jad.exe and run it , but it throwed a message : JavaClassFileParseException: Not a class file. It says it decompiles only classes, but what about jars? Is it so hard just store sources in fu** zip ???!!!!

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• C# Socket Server

  - by Snoopy

  In .NET 3.5 a new socket classes was released: http://msdn.microsoft.com/en-us/library/bb968780.aspx i found a sample but some questions regarding best practicses are remaining: http://code.msdn.microsoft.com/nclsamples/Wiki/View.aspx?title=Socket%20Performance m_numConnections (the maximum number of connections the sample is designed to handle simultaneously) is probably equal to the amount of cpu cores i have. m_receiveBufferSize is the size for one packet? like 8kb? how should i handle a length byte? opsToPreAlloc i dont understand. is this if i code a transparent proxy? Regarding the multithreading, what should be used? The reactive extension seem to be a good choice. Has anyone tried this in a real world project? Are there better options? I had bad experiences with the .NET thread pool in the past.

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• Creating a Custom UserControl TestContainer for Visual Studio

  - by AMissico

  I like to use the "UserControl TestContainer" that works great for testing a controls properties during design time. Yet it has limitations. Usually, I just create a Windows Form Application to test the control's run-time interface. It would be nice to combine the two phases. Today, I discovered that the test-container is defined in the project file as show below. What I like to do is create my own test-container and use it for my Windows Forms Control Library projects in Visual Studio 2008. I cannot find any specific documentation, and the documentation I found was related to MSTest and not helpful. Any help, suggestions, or research directions for implementing my own test-container? <ItemGroup> <Service Include="{94E38DFF-614B-4cbd-B67C-F211BB35CE8B}" /> </ItemGroup>

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• How to improve performance

  - by Ram

  Hi, In one of mine applications I am dealing with graphics objects. I am using open source GPC library to clip/merge two shapes. To improve accuracy I am sampling (adding multiple points between two edges) existing shapes. But before displaying back the merged shape I need to remove all the points between two edges. But I am not able to find an efficient algorithm that will remove all points between two edges which has same slope with minimum CPU utilization. Currently all points are of type PointF Any pointer on this will be a great help.

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• SQL Encryption - Asymmetric Key - 2nd Server

  - by Jason Heine

  Hello, I created an asymmetric key on one of my SQL servers (2008). I encrypted a password field and I am able to retrieve that password just fine on my development server. The issue comes into play where I need to move this data to a production server. Here is the code for the key that was created: CREATE MASTER KEY ENCRYPTION BY PASSWORD='#########' CREATE ASYMMETRIC KEY UserEncryptionKey WITH ALGORITHM = RSA_2048 Now, when I run this on the production server, it creates the key just fine. However, when I run my sproc to get the password, it returns NULL. SQL: SELECT EncryptByAsymKey(AsymKey_ID('UserEncryptionKey'), Password ) FROM Users WHERE UserName = '######' Any thoughts on what I need to do to get the encrypted field to work on multiple SQL Servers? Please let me know if I need to clarify something. Thanks

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• Qt LGPL licencing for a free application with closed source

  - by Andy M

  Hey everyone, I'm working on an application developped with Qt 4.6.2. I'm linking dynamicaly and I don't want to share my source code. The application is totally free and I don't plan on selling any part of it. I did not make any changes in the Qt library, I'm only using it to develop the application... I just want to share my free application, without having to share the source code... My question is, what would be your advices in choosing the correct licencing ? Thanks in advance for your answers !

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• What is a Web Framework ? How does it compare with LAMP

  - by Nishant

  I started web development in LAMP/WAMP and it was logical to me . There is a Web Server program called Apache which does the networking part of setting up a service on port 80 ( common port ) . If the request is regular HTML it uses the HTTP headers to transport files .And if the request for the file is a PHP one , it has a mod_php with which Apache invokes the PHP interpreter to process the file and it gives back HTML which is again transferred as usual HTML . Now the question is what is a Web Framework ? I came across Python based website creation and there is Flask . What is a flask , how does it compare with LAMP . Further are DJango / Ruby on Rails different from flask ? Can someone answer me and also give some good places to read on these .Thanks for your answers in advance . Further is things like LAMP slower than the common FRAMEWORKS because they claimn easy deplyment fo web apps .

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• atlbase.h not found when using Visual C++ Express 2010

  - by hcwang

  So I tried moving my project to Visual C++ Express 2010 on Windows 7 from a previous version on Windows XP. I got all sorts of errors where atlbase.h was not found. This isn't so much a question but I wanted to document what my resolution was for others. Copied the following PlatformSDK files from my previous install and put them on my Windows 7 machine. PlatformSDK/include/atl PlatformSDK/include/mfc PlatformSDK/lib PlatformSDK/src/atl I then change the VC++ Directories in the project Properties to point to those directories. Include Directories- *include/atl *include/mfc Library Directories- *lib Source Directories- *src/atl Make a change to stdafx.h right after this line: #include "atlbase.h" add this line: extern CComModule _Module; Hopefully you're ready to go now! Probably not but perhaps you are well on your way.

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• browser back acts on nested iframe before the page itself - is there a way to avoid it??

  - by kfiroo

  hi, i have a page with dynamic data loaded by some ajax and lots of javascript. the page contains a list from which the user can choose and each selected value loads new data to the page. one of these data items is a url provided to an iframe. i use jQuery BBQ: Back Button & Query Library to simulate the browser-back behavior. all works well besides the fact that when i click the back button for the first time the iframe goes back to its previous location and then i need to click back again to make the page go back. is there a way to disable the iframe's back behavior?

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• Simple neon optimization in Android

  - by Peter

  In my Android application, I use a bunch of open source libraries such as libyuv, libvpx, libcrypto, libssl, etc. Some of them come with Android.mk. For others, I hand-crafted Android.mk. The code is built only for arm for now. Here is my Application.mk: APP_ABI := armeabi-v7a APP_OPTIM := release APP_STL := gnustl_static APP_CPPFLAGS := -frtti I am looking for way to generate binaries that are optimized for neon. Browsing the net, I found the following setting that someone is using in his Android.mk: LOCAL_CFLAGS += -mfloat-abi=softfp -mfpu=neon -march=armv7 I wonder if I simply put this setting in Application.mk, will it automatically get applied across all the libraries? A step before each library is built is the following: include $(CLEAR_VARS) Is it better to include LOCAL_CFLAGS directive after this line (instead of including it in Application.mk)? Finally, why doesn't ndk-build automatically optimize for neon when it sees armabi in Application.mk? Regards.

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• Ldap search query with parameters

  - by djerry

  Hey guys, I'm using a ldap server to store phonerecords. I want to select a record with a specific telnumber. So this is what I'm doing: LdapSearchResults lsc = _conn.Search(dnForPhonebook, 1, "(&(objectClass=*)(uid=" + id + "))", null, false); I'm using novell library for ldap commands. The options i need to give in for the Search command are the dn to the node "phonebook" (string), scope (int), filter (string), attrrs (string[]) and typesOnly (bool). As you can see, for the filter, i'm pasting the parameter as string in de stringfilter. I was wondering, does ldap have the same way of work as mysql or sql server, which can work with paramaters? Thanks in advance.

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• How well do (D)VCS cooperate with workflows involving several people editing files in the same direc

  - by frankster

  Imagine because of tradition that your team's preferred development method involved several people with a shared login, editing files on a build server using vim. [Note that there are well known issues to do with only one person being able to edit a file at once, people going away from their desk and leaving the file locked in vim, system builds/restarts requiring everybody to stop debugging while this occurs. This is not what the question is about] If source control was to be introduced without changing the workflow, would there be much benefit? I am guessing that the commit history won't be much use as it will contain all changes by everybody in big lumps. So it wouldn't really be possible to rewind individual changes apart from at a really big level.

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• ASP.NET 4 UpdatePanel and IIS7 Problem

  - by rwponu

  I have an ASP.NET 4 webpage that contains an update panel which just allows me to add a few items to a drop down list without reloading the entire page. The page works fine on the Visual Studio 2010 ASP.NET Development Server, performs the Async call and the page is properly laid out. However, when I deploy the page to IIS7, the Async call no longer works (the page is completely reloaded) and the layout of some items on the page is incorrect. I used Fiddler to look at what's happening and it looks like there are 404's when the page tries to access ScriptResource.axd, with everything else working correctly. I think that has to do with the Javascript required for the call but I'm not sure how to fix it. Any suggestions?

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• Is naming a software product the same as a book legally problematic?

  - by Jake Petroules

  I came up with a name for a software product I'm developing. It's composed of two common English words put together (for example, Firefox, Silverlight, etc.). I Googled the name to see if it was being used by any other software product before committing to it. After finding none, I did notice that there is a book published around 60 years ago, by that same name. Would it be legally problematic to name my software product as such, or does it being a software product vs a book make it irrelevant? PS - I know this isn't really a programming question, but naming is related to software development, isn't it? ;) PPS - How do companies like Microsoft get away with naming things "Windows" and "Office"? Or are they just legally called "Microsoft Windows" and "Microsoft Office"? Do developer names always precede software product names? Would naming a software product "Jones Office" be illegal?

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• Defining - and dealing with - Evil

  - by Chris Becke

  As a software developer one sometimes gets feature requests that seem to be in some kind of morally grey area. Sometimes one can deflect them, or implement them in a way that feels less 'evil' - sometimes - on reflection - while the feature request 'feels' wrong theres no identifiable part of it that actually causes harm. Sometimes one feels a feature is totally innocent but various anti virus products start tagging one as malware. For example - I personally consider EULAs to (a) hopefully be unenforceable and (b) a means by which rights are REMOVED from consumers. However Anti Virus scanners frequently mark as malware any kind of download agent that does not display a EULA. Which to me is the result of a curious kind of double think. What I want to know is - are there any online (or offline) resources that cover evil software development practices? How can I know if a software practice that I consider dodgy is in fact evil enough to consider fighting?

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• Hibernate or JPA or JDBC or ???

  - by Yatendra Goel

  I am developing a Java Desktop Application but have some confusions in choosing a technology for my persistence layer. Till now, I have been using JDBC for DB operations. Now, Recently I learnt Hibernate and JPA but still I am a novice on these technologies. Now my question is What to use for my Java Desktop Application from the following? JPA Hibernate JDBC DAO any other suggestion from you... I know that there is no best choice from them and it totally depends on the complexity and the requeirements of the project so below are the requirements of my project It's not a complex application. It contains only 5 tables (and 5 entities) I wan't to make my code flexible so that I can change the database later easily The size of the application should remain as small as possible as I will have to distribute it to my clients through internet. It must be free to use in commercial development and distribution.

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• Wiki for requirements engineering

  - by Shanon

  Hi, I'm looking to to build a wiki based tool the helps/aides in the requirements engineering process. More specifically I am hoping to end up with a tool that helps inexperienced users easily create and design requirements documents on a wiki platform. I was wondering if there exist any wiki/wiki platforms that either already exist or are easily extendible or would be worth looking at that for this purpose. For instance some of the features I was hoping to add would be to add structure to a document so that information is filled out in a standardised manner. Another idea I was looking at was to somehow create relationships between different types of documents (for example- a goal diagram gets evolves/ helps in the development of the class diagram). So far I have come across FOSwiki which claims to to fully customisalble...but I'm not sure what it means and what I can really do with that. Any input on FOSwiki is also highly appreciated.

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• Zend Framework Error:Invalid parameter number: no parameters were bound'

  - by roast_soul

  I'm using the Zend Frameworker 1.12. According to the help file, I used the Zend_Db_Statement to execute my sql. Below is my php code: $sql = "delete from options where id=?"; $stmt = new Zend_Db_Statement_Mysqli($this->getAdapter(), $sql); return $stmt->execute(array('1')); But the error is exception 'PDOException' with message 'SQLSTATE[HY093]: Invalid parameter number: no parameters were bound' in D:\Zend\workspaces\DefaultWorkspace.metadata.plugins\org.zend.php.framework.resource\resources\ZendFramework-1\library\Zend\Db\Statement\Mysqli.php:209 Stack trace: ......... ......... I googled for days, but nothing works. Any one know how to fix it?

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