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• Rails authorization plugins

  - by jacklin

  We are evaluating plugins for Authorization in Rails. The two at the top of our list are cancan and declarative_authorization. I would like to get some feedback from anyone currently using either of these plugins. The problem we are going to face with any authorization plugin is that we have a database per customer model and will need to modify the plugin to work within that model. Because of this fact I'm interested in hearing from anyone who has had to tweak the plugins at all as well. I'm just starting to look around at the code. It seems like cancan might be a little easier to customize. Any thoughts?

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• How to proprely remove a flash object from a HTML page.

  - by Niklaos

  Hi guys. I made a website using AJAX (with jquery) for the navigation. The pages of the site are sliding and I use remove() to destroy the old page. Every thing seems alright, but some times the browser crashes when he tries to remove the old page containing a Flash object. I suppose this is because Flash is still executing the Flash object. My question is simple. How do i remove this Flash's object for my page without having the browser crashing on my face ? Is there a way to stop the Flash execution before removing the object ? Thanks for your help.

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• Working effectively with unit tests / Anyone tried the in-assembly approach?

  - by CodingCrapper

  I'm trying to re-introduce unit testing into my team as our current coverage is very poor. Our system is quite large 40+ projects/assemblies. We current use a project named [SystemName].Test.csproj were all the test code is dumped and organised to represent the namespaces using folders. This approach is not very scalable and makes it difficult to find tests. I've been thinking about added a Tests folder to each project, this would put the unit tests "in the developers face" and make them easy to find. The downside is the Production release code would contain references to nunit, nmocks as well as the test code and test data.... Has anyone tried this approach? How is everyone else working with unit tests on large projects? Having a Tests project per "real" project/assembly would introduce too many new projs. Thanks in advance

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• What are the repercussions of not checking existing data when adding a foreign key?

  - by scottm

  I've inherited a database that doesn't exactly strive for data integrity. I am trying to add some foreign keys to change that, but there is data in some tables that doesn't fit the constraints. Most likely, the data won't be used again so I want to know what problems I might face by leaving it there. The other option I see is to move it into some kind of table without referential constraints, just for historical purposes. So, what are the repercussions of not checking existing data? If I create a foreign key constraint on a table and don't check existing data, will all new data inserted into the table be enforced?

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• Diamonds Are Forever. Services Are Not.

  - by rayman

  Hi, ive read this article by Mark Murphy, while i was looking for a solution to my case. I have a Listener in my system, which suppose to get a UDP trigger times to times from an outside server, ive done this listener as a service. how could i prevent it being shut off by the user? (SDK 1.5), i`am working for a company which create cell phones, and we spread the device with this Listener. as soon as the listener goes off our systems will be terminated any idea for this scenario? *i`am already aware to the face, that the system could also take it off, but this case will be easier to handle and avoid. thanks, ray.

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• Why is "start in" needed for Windows scheduled tasks?

  - by GomoX

  We develop a web application that can be deployed on Windows or Linux. The Linux implementation uses cron, and the Windows one uses scheduled tasks to run a single PHP script that processes all scheduled tasks for our system. The task is scheduled using schtasks during the install process, like: This has always worked both under W2003 and W2008. A week ago a customer reported that scheduled tasks were not running. He is running on Windows 2008. We checked over and over and finally solved the issue by entering the folder that contains the .vbs script as the "start in" folder for the scheduled task. This said, there is no way to set up the "start in..." value from schtasks without using an XML definition of the tasks. XML definitions don't work in Windows 2003, so I would have to add windows version detection to the installer, additional testing, etc (I'd like to avoid this if at all possible). The only atypical thing I noticed about the install is that the system is installed in D:\ as opposed to the default C:\Program Files (x86)\, but I don't see how this would matter. All the paths are absolute in all the scripts. Can anyone suggest a reasonable solution for this?

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• Problem with Maven in Spring roo

  - by Dee

  I was trying to run the Wedding RSVP sample given with Spring Roo 1.0.0.RC3. I am running on Maven 2.2.1 and JDK 1.5.0_19, Java and M2 Home are properly set. Unfortunately none of the commands that involve Maven calls (example: "Perform test" or 'Perform eclipse") work and there is no error either. The cursor immediately returns on the roo command line. I also tried the steps at http://blog.springsource.com/2009/05/27/roo-part-2 but same problem. Did anybody face this issue?

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• How to synchronize two DataBase Schemas Oracle 10G?

  - by gnash-85

  Hi Masters, Good Day, I am new and very naive to Oracle DB. I am using Oracle 10G. Let me explain to you. I have one source database named ( DB1) and Target Database named (DB2). I have 2 schema's named dbs1 and dbs2 in the source database (DB1). I have exported both the database schemas in Source Database (DB1) and imported it successfully into the Target Database (DB2). Now I face a challenge in synchronizing these database schemas every time from Source DB (DB1) to Target DB (DB2). Can anyone please help in letting me know how can achieve this synchronization? It would a great help. Thanks Nash

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• What language is better suited for P2P video streaming?

  - by Roman

  I would like to write a Skype like software which allows P2P video/audio streaming. What language is better suited for that? There are several requirements: Software should be easy to install. It should be easy to program. I want to have access to video information. For example to make a face expression recognition on the fly. It should be free. I am thinking of Python and Java. Which one would be better? Or may be there is a third choice which is better? ADDED Flash is an attractive option since users can use their browser in which flash is installed by default and if not, it's easy to install flash. But I do not know if I can have access to video (if I want to do some processing). Moreover, Flash is not free.

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• Texture repeats even with GL_CLAMP_TO_EDGE set [FIXED]

  - by Lliane

  Hi, i'm trying to put a translucing texture on a face which uses points 1 to 4 (don't mind the numbers) on the following screenshot Sadly as you can see the texture repeats herself in both dimensions, I tried to switch the TEXTURE_WRAP_S from REPEAT to CLAMP_to_EDGE but it doesn't change anything. Texture loading code is here : gl.glBindTexture(gl.GL_TEXTURE_2D, mTexture.get(4)); gl.glActiveTexture(4); gl.glTexParameterf(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR); gl.glTexParameterf(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_CLAMP_TO_EDGE); gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_CLAMP_TO_EDGE); gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGBA, shadowbmp.width, shadowbmp.height, 0, gl.GL_RGBA, gl.GL_UNSIGNED_SHORT_4_4_4_4, shadowbmp.buffer); Texture coordinates are the following : float shadow_bot_text[] = { 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 1.0f }; Thanks

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• send datas to php with ajax - Internal Server Error(500)

  - by user1277467

  i try to send my datas to php with ajax but there's strange mistake. this is my ajax script, function deleteData2() { var artistIds = new Array(); $(".p16 input:checked").each(function(){ artistIds.push($(this).attr('id')); }); $.post('/json/crewonly/deleteDataAjax2', { json: JSON.stringify({'artistIds': artistIds}) }, function(response){ alert(response); }); } i think this works correctly but in php side, i face 500 internal server error(500). public function deleteDataAjax2() { $json = $_POST['json']; $data = json_decode($json); $artistIds = $data['artistIds']; $this->sendJSONResponse($artistIds); } Above code is my php. For example, when i try to send $data to ajax, i print my ids in json mode: However, when i try to send $artistIds to ajax side, i gives 500 error why?

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• interview questions for a test lead

  - by PJ

  Maybe this question has been asked although I didn't find the answer. I am going to attend an interview for a test lead. can you tell me the pattern of questions I will have to face other than the normal question that I was facing previously like What is Software testing? What is Bug life cycle? or Grilling me on my project experience. Also I wnat to know when they are going to hire me for a test lead what would they want to see as an extra add ons?

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• WebSphere hung threads, how can I track then down?

  - by Puzzled

  We have an application running on WebSphere (unfortunately it is 6.1 which is no longer supported, it has not yet been migrated in production to a later version) which becomes entirely unresponsive because of hung threads. As far as I can tell we entirely exhaust one of the thread pools. I have activated hung thread detection and I get a core/thread dump when hung threads are detected. The server can run for several days without problems but has crashed twice this week. When load the core/thread dump in "IBM Thread and Monitor Dump Analyzer for Java", it tells me that there are a certain number of hung threads (this time it was 2, last time 11) and multiple (usually around 40) threads "waiting on condition" and some running threads. I believe one of the thread pool has around that size (50). Now what I see in there are threads waiting for locks, having locks or in wait. Most of them show a stack track which always ends like this: at java/lang/Object.wait(Native Method) at java/lang/Object.wait(Object.java:231) Now, how can I track this down to either a server configuration problem, application issue, WebSphere problem or something else? How is this supposed to help me track down the problem when almost everything in there refers to IBM code? I cannot ask IBM's help as 6.1 is now an unsupported version of WebSphere and while work has been done to make it work under WebSphere 7 we are not yet ready to switch to it in Production yet.

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• What advantages can I get from learning C++ if I'm mainly a C# Programmer?

  - by Sergio Tapia

  Hello, Recently I've started to notice a lot of smirks and generally rude comments whenever I mention C#. Everyone I talk to either says learn Python or learn C++. Python is a nice language, I get it. But I don't find much use for it right now (for my use cases), and C++ I heard is a faster language (not sure). So my question is this, what advantage can I get from learning C++ (besides the knowledge and expansion of my horizons), when I mainly program in C#. If anyone can make a legitimate claim, I'll for sure look into learning the language because let's face it, I trust you guys. Thanks so much for all the help.

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• system() not working in php using windows server 2003

  - by jazzy

  hi i have to extract the cabfile(.cab) on the server. i am Finding such script which extract cab file but i didn't get it yet. So now i am try to extract using cabarc.exe. But i face the problem that when i run command throuw commandline its work fine but when i give same command to system() or exec() function in php it is not work. code is as follow: $command = "c:\\exe\\cabarc X c:\\cab\\data.cab c:\\data\\"; if(($output = system($command,$return) != false) { echo "$return"; } it is not working when i use same string in commandline it works fine. please any body help me to why it not working what to do tomake it work is ther any rights issue. I had give the execute permission to the site. thanks

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• "UserWarning: Unbuilt egg for setuptools" - What does this actually mean?

  - by Wolo

  Hiya. When I install things into a virtualenv using pip I often see the message "UserWarning: Unbuilt egg for setuptools". I always safely ignore it and go about my business and it doesn't seem to cause me any problems. But I've suddenly been smacked in the face with curiosity, and wondered if someone could explain what it means, exactly? Also, does the new virtualenv option to use distribute instead fit into all this somewhere? Should I be using that instead, or just ignoring it until distutils2 comes out? (apologies if that's totally unrelated - maybe it should be a new question?) Thanks!

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• c: memory allocation (what's going on)

  - by facha

  Hi, everyone Please take a look at this piece of code. I'm allocating one byte for the first variable and another byte for the second one. However, it seems like the compiler allocates more (or I'm missing something). The program outputs both strings, even though their length is more the one byte. void main() { char* some1 = malloc(1); sprintf(some1,"cool"); char* some2 = malloc(1); sprintf(some2,"face"); printf("%s ",some1); printf("%s\n",some2); } Please, could anyone spot some light on what's going on when memory is being allocated.

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• .htaccess - deny downloading of files

  - by user317005

  I keep several fonts in the directory "/fonts/" on my server which I then load into my css files via @font-face. However, I want to make sure that people cannot download the file just by simply going to http://www.domain.com/fonts/fontname.ttf. Can I somehow prevent this, and still be able to load the font files into my css files? Because I think putting deny from all into the .htaccess file will even prevent the css files for correctly loading the fonts. I hope this makes sense.

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• Commands implicitly threaded in Makefiles ?

  - by apple92

  Hi, I have a "super" makefile which launches two "sub" make file: libwebcam: @echo -e "\nInvoking libwebcam make." $(MAKE) -C $(TOPDIR)/libwebcam uvcdynctrl: @echo -e "\nInvoking uvcdynctrl make." $(MAKE) -C $(TOPDIR)/uvcdynctrl uvcdynctrl uses libwebcam... I noticed that those two builds are launched as separate threads by make ! Thus sometimes the lib is not available when uvcdynctrl starts being built, and I get errors. By default, make should not launch commands as threads since this is available only through -j (number of jobs) and, according to the make manual, there is no thread by default. I run this on an Ubuntu. Did someone face the same issue ? Apple92

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• font from psd file for web page

  - by fablife

  I recently took on a project to build a webpage. I am an experienced developer but never worked with coding a psd file into a webpage. Now, the psd file uses a specific font, which I do not have probably, as I can see it in grey and [ ] at the bottom of the fonts list. Sorry for the naive question, but what am I supposed to do from the client's point of view? Should I have that font? Should I buy it? Can I extract it from the psd file? And then, does it come into the web-page as @font-face? Thanks for any suggestion

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• Help with validation rules

  - by George Garman

  I am trying to figure out how to validate a section of a form using php. If at least one of value 1-5 is checked, then at least one of value A-E must be checked. Value's A-E cannot be allowed without at least one of 1-5 being checked. Multiple values in each section can be selected, as long as there is at least one value in each section checked. I have tried individual IF statements and arrays without success. Does anyone have any suggestions or examples? I am missing something and I am certain it is pretty obvious, right in my face.

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• 3D Mesh Joining

  - by morlst

  I have 2 (or more) intersecting meshes, which require joining into 1 mesh object. I want to have some control over the resulting seam vertex insertion, so looking to write myself rather than use a library. Has anyone come across some open source code to base the algorithm on / ideas on the process? Initial impressions are: 1. Present in every 3D modelling program - mostly reinventing existing process (hence search for examples) 2. Potential for fiddly-ness around the polygon face direction and just touching conditions. (see above point)

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• Which is the 'correct' way to do this (if statement)

  - by frinkz

  I've got plenty of these lying around, and I'm wondering if I'm going to face any trouble - or performance problems. I have method A: MyClass monkey; ... if(monkey != null) { ... } Or method B: boolean hasMonkey; //This is set to TRUE when monkey is not null MyClass monkey; ... if(hasMonkey) { ... } On a functional level, they both do the same thing. Right now, I'm using method A. Is that a bad way of doing things? Which is going to perform better?

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• 2 DataBase Schema's syncronization in Oracle 10G

  - by gnash-85

  Hi Masters, Good Day, I am new very naive to oracle DB. I am using Oracle 10G. Let me explain to you. I have one source database named ( DB1) and Target Database named (DB2). I have 2 schema's named dbs1 and dbs2 in the source database (DB1). I have exported both the database schema in Source Database (DB1) and imported it successfully into the Target Database (DB2). Now I face a challenge in synchronizing these database schema's every time from Source DB (DB1) to Target DB (DB2). Can anyone please help in letting me know how can achieve this synchronization. It would a great help. Thanks Nash

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• allow waiting user experience while file upload with rails and jquery

  - by poseid

  I am trying to display a waiting spinnger, while uploading a file. I am able to show the spinner, and to do the upload, when doing it individually. My problem is how to combine these two. The Jquery Javascript looks like: <% javascript_tag do %> function showLoading() { $("#loading").show(); } function hideLoading() { $("#loading").hide(); } function submitCallback() { showLoading(); $.post("create"); } <% end % My form looks like: <% semantic_form_for @face, :html => {:multipart => true} do |f| %> <%= f.error_messages %> <%= render 'fields', :f => f %> <p> <%= button_to_function 'create', "submitCallback()" %> </p> <% end %>

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