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• SQL Source Control with Vault Support Officially Released

  - by Ajarn Mark Caldwell

  HOORAY!  It is officially here!  Today, Red-Gate officially released SQL Source Control version 2.1 with support for Vault. While we have been happily and successfully running the beta version (a.k.a. the Early Access release) of Red-Gate SQL Source Control with support for Vault for quite a while, it is good to have the official RTM (or GOLD, or PROD, or whatever you call your “no-longer-in-beta”) release of the product. As a courtesy to those who have not already read the series, allow me to provide you with these links to my previous posts about this fantastic tool. Using SQL Source Control with Fortress or Vault – Part 1 – Introduction and initial thoughts about the tool and source controlling SQL code in general. Using SQL Source Control with Fortress or Vault – Part 2 – Additional details about included features and a few warnings. Source Control and SQL Development – Part 3 – How we did it in the good ol’ days before this product came along. Using SQL Source Control and Vault Professional Part 4 – A few closing thoughts.

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• Basic 3D Collision detection in XNA 4.0

  - by NDraskovic

  I have a problem with detecting collision between 2 models using BoundingSpheres in XNA 4.0. The code I'm using i very simple: private bool IsCollision(Model model1, Matrix world1, Model model2, Matrix world2) { for (int meshIndex1 = 0; meshIndex1 < model1.Meshes.Count; meshIndex1++) { BoundingSphere sphere1 = model1.Meshes[meshIndex1].BoundingSphere; sphere1 = sphere1.Transform(world1); for (int meshIndex2 = 0; meshIndex2 < model2.Meshes.Count; meshIndex2++) { BoundingSphere sphere2 = model2.Meshes[meshIndex2].BoundingSphere; sphere2 = sphere2.Transform(world2); if (sphere1.Intersects(sphere2)) return true; } } return false; } The problem I'm getting is that when I call this method from the Update method, the program behaves as if this method always returns true value (which of course is not correct). The code for calling is very simple (although this is only the test code): if (IsCollision(model1, worldModel1, model2, worldModel2)) { Window.Title = "Intersects"; } What is causing this?

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• Validate that a Checkbox is checked using javascript

  - by H(at)Ni

  I was facing a challenge yesterday that I was creating a Visual webpart and I wanted to validate the a submit button is only visible if the user checked a "I agree to terms" checkbox. Something was weired that I tested my code on a normal asp.net website and it worked perfectly while it had a different behaviour inside the webpart which is whenever I check the checkbox, the button is enabled but it will not fire the asp.net validators in client side. It posts back the page and then the validators appear after that. So, I tried to change my type of thinking and I reached a different solution is that to call a javascript function whenever the button is clicked and then check if the checkbox is clicked or not. To illustrate more, here are an example to what I'm saying: 1. Button in aspx page: <asp:Button OnClientClick="CheckForCondition();"  ValidationGroup="CompaniesSection" ID="btnCompaniesSubmit"                         runat="server" Text="Submit" /> 2. CheckForCondition() function: <script language="javascript" type="text/javascript">                         function CheckForCondition() {                             if ($jq('#<%= ChkCompanyCheck.ClientID %>:checked').val() == undefined) {                                 $jq('#lblCheckBox').show();                                 return false;                             }                             else {                                 $jq('#lblCheckBox').hide();                                 return true;                             }                         }                      </script> 3. lblCheckBox is simply a label that shows a red asterisk beside the checkbox to indicate that it's a required field. <label id="lblCheckBox" style="color:Red;display:none">*</label>

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• State changes in entities or components

  - by GriffinHeart

  I'm having some trouble figuring how to deal with state management in my entities. I don't have trouble with Game state management, like pause and menus, since these are not handled as an entity component system; just with state in entities/components. Drawing from Orcs Must Die as an example, I have my MainCharacter and Trap entities which only have their components like PositionComponent, RenderComponent, PhysicsComponent. On each update the Entity will call update on its components. I also have a generic EventManager with listeners for different event types. Now I need to be able to place the traps: first select the trap and trap position then place the trap. When placing a trap it should appear in front of the MainCharacter, rendered in a different way and following it around. When placed it should just respond to collisions and be rendered in the normal way. How is this usually handled in component based systems? (This example is specific but can help figure out the general way to deal with entities states.)

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• using iphone to control mac

  - by Ajay Pandey

  i want to use iPhone touch screen as the touchPad for my mac while both devices are connected via bluetooth. So far i hv gone for two approaches what i want is an application which when launched turns the bluetooth on and get connected to mac.Further ...screen of iPhone becomes the touch pad for mac. i dont want to install anything at the mac like any server........ I have already tried the vnc and remotePad approach. the one with vnc looks more promising for me..but even in that case i have to install a vnc server on mac ,i guess and then we'll have to actually call vnc client while my application is still running,which does not look real in 3.2 verson as it does not support multi tasking. Is there any other way of doing it? or is there anything wrong in my above interpretation? please let me know if there is anyother approach of doing the same or if i can do any thing different with my current approach. hoping for quick response Thanks

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• 15 Puzzle Shuffle Method Issues

  - by Codemiester

  I am making a 15 puzzle game in C# that allows the user to enter a custom row and column value up to a maximum of a 10 x 10 puzzle. Because of this I am having problems with the shuffle method. I want to make it so the puzzle is always solvable. By first creating a winning puzzle then shuffling the empty space. The problem is it is too inefficient to call every click event each time. I need a way to invoke the click event of a button adjacent to the empty space but not diagonal. I also use an invisible static button for the empty spot. The PuzzlePiece class inherits from Button. I am not too sure how to do this. I would appreciate any help. Thanks here is what I have: private void shuffleBoard() { //5 is just for test purposes for (int i = 0; i < 5; i++) { foreach (Control item in this.Controls) { if (item is PuzzlePiece) { ((PuzzlePiece)item).PerformClick(); } } } } void PuzzlePiece_Click(object sender, EventArgs e) { PuzzlePiece piece = (PuzzlePiece)sender; if (piece.Right == puzzleForm.emptyPiece.Left && piece.Top == puzzleForm.emptyPiece.Top) { movePiece(piece); } else if (piece.Left == puzzleForm.emptyPiece.Right && piece.Top == puzzleForm.emptyPiece.Top) { movePiece(piece); } else if (piece.Top == puzzleForm.emptyPiece.Bottom && piece.Left == puzzleForm.emptyPiece.Left) { movePiece(piece); } else if (piece.Bottom == puzzleForm.emptyPiece.Top && piece.Left == puzzleForm.emptyPiece.Left) { movePiece(piece); } }

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• Offset AND incremental backup

  - by Pyrolistical

  I already do backups from my main computer to my server computer using synctoy. But now I also want to do off-site backup. My idea so far: have source hard drive (we'll call S) at home have backup hard drive at work called B have transport hard drive called T connect T at work and record index of files on B take T home and check index of S and note new/changed/deleted files and copy changed files to T take T to work and update S repeat Its basically a sneakernet and using all of the advantages of it. High bandwidth, low latency. Is there some software to do this, or do I have to write it myself?

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• c# scripting execution with xna (actions take more than 1 frame)

  - by user658091

  I'm trying to figure out how to implement c# scripting into my game (XNA with C#). I will be using C# as the scripting language. My question is, how to call functions that take more than 1 frame to finish? For example: class UserScript : Script { public override void execute(Game game) { //script must wait for dialog to be closed game.openDialog("This is a dialog"); //script should'nt wait for this int goldToGive = 100; goldToGive += 100; game.addGold(goldToGive); // //script should wait for cinematic to end game.startCinematic("name_of_cinematic"); //doesn't wait game.addGold(100); } } I found that you can do that with yield, but I'm not sure if it's the correct way (It's from 2010, the article mentioned no longer exists). http://stackoverflow.com/questions/3540231/implementing-a-simple-xml-based-scripting-language-for-an-xna-game Is yield the answer? If so, can anyone point me any examples/tutorials/books? I haven't found any regarding my situation. If not, what approach should I take? or am I better off with multi-threading?

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• Why is wp-cron taking up so many resources?

  - by Gaia

  From /var/logs/httpd/error-log: [Thu Apr 22 01:41:15 2010] [notice] mod_fcgid: call /var/www/vhosts/mydomain.com/httpdocs/wp-cron.php with wrapper /usr/bin/php-cgi [Thu Apr 22 01:41:15 2010] [notice] mod_fcgid: server /var/www/vhosts/mydomain.com/httpdocs/wp-cron.php(17999) started ...The previous line shows up 8661 times... What's in Cron? Apr 22, 2010 @ 18:25 (1271960731) Twice Daily wp_version_check Apr 22, 2010 @ 18:25 (1271960731) Twice Daily wp_update_plugins Apr 22, 2010 @ 18:25 (1271960731) Twice Daily wp_update_themes Apr 23, 2010 @ 12:21 (1272025294) Once Daily wp_scheduled_delete Running CentoOS 5/plesk 9.3/php as FastCGI/suExec with WP 2.9.2 Thanks in advance.

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• Switching PHP to FastCGI from mod_php broke AMFPHP

  - by wezzy

  Hi, i've just switched my debian server from mod_php to fastcgi following this tutorial everything goes right but now i've found that one of the hosted application that using AMFPHP for flash remoting is broken. I'm trying to understand what's happend. Looking at it with FireBug and FireAMF it seems that the responses has a content but the Flash callbacks never get called and if i try to open the service browser it displays this error: (mx.rpc::Fault)#0 errorID = 0 faultCode = "Client.Error.RequestTimeout" faultDetail = "The request timeout for the sent message was reached without receiving a response from the server." faultString = "Request timed out" message = "faultCode:Client.Error.RequestTimeout faultString:'Request timed out' faultDetail:'The request timeout for the sent message was reached without receiving a response from the server.'" name = "Error" rootCause = (null) It's strange it seems that the server takes a long time to responde, then (in the service browser) flash made a new call to the server and the old one get a response. Some problem with sessions ? Really no idea ....

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• Best Method/Library For Remote Authentication

  - by Mike

  I have a web app that has a REST API interface: http://api.example.com/core that uses API Keys and domain specific keys (key has to be used on the specified domain). I then will have several client sites with ajax forms where we will require users to sign in before being able to submit the form. This form will add data to a table, and submit an email to several recipients along with checking credentials. This form will use an ajax submit to our REST API. All Communication to/from the API is over SSL Ideal Flow: Visitor Fills Form Out -> Enters User/pass -> Submits Form -> ajax request to REST API -> API Verifies credentials -> does CRUD -> sends emails -> returns 200/403 -> perform DOM manipulation based on return code in ajax call Are there any libraries in PHP that currently do something to this similarly? Would OAuth be a good use for this scenario? Languages used are: js/html/css/php/MySQL

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• SEO for maps-based websites that require user interaction

  - by j0nes

  I have a website that basically shows a lot of locations worldwide on a Google Maps like interface. The map itself is built using the Leaflet library and Open Street Map tiles. In the map, I show markers at each location I have. There is a popup window when I click on a marker that shows additional information and contains links to "detail" pages for this location. I fetch the location data for the viewpoint from an AJAX call from my server, so the additional information is not available in the HTML page itself. The detail pages are the pages my users are interested in. My normal users load the map, search the location they are interested in, click on a marker and click on a link in the popup window. However for search engines, this might look different. As this navigation pattern relies on user interaction, I think they might not be able to find the details page. My questions: Are search engines able to follow a navigation path like outlined above? How can I improve the navigation for search engines? (For example showing textual links below the map, sitemaps...) How important are internal links for SEO?

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• Rails: The Law of Demeter [duplicate]

  - by user2158382

  This question already has an answer here: Rails: Law of Demeter Confusion 4 answers I am reading a book called Rails AntiPatterns and they talk about using delegation to to avoid breaking the Law of Demeter. Here is their prime example: They believe that calling something like this in the controller is bad (and I agree) @street = @invoice.customer.address.street Their proposed solution is to do the following: class Customer has_one :address belongs_to :invoice def street address.street end end class Invoice has_one :customer def customer_street customer.street end end @street = @invoice.customer_street They are stating that since you only use one dot, you are not breaking the Law of Demeter here. I think this is incorrect, because you are still going through customer to go through address to get the invoice's street. I primarily got this idea from a blog post I read: http://www.dan-manges.com/blog/37 In the blog post the prime example is class Wallet attr_accessor :cash end class Customer has_one :wallet # attribute delegation def cash @wallet.cash end end class Paperboy def collect_money(customer, due_amount) if customer.cash < due_ammount raise InsufficientFundsError else customer.cash -= due_amount @collected_amount += due_amount end end end The blog post states that although there is only one dot customer.cash instead of customer.wallet.cash, this code still violates the Law of Demeter. Now in the Paperboy collect_money method, we don't have two dots, we just have one in "customer.cash". Has this delegation solved our problem? Not at all. If we look at the behavior, a paperboy is still reaching directly into a customer's wallet to get cash out. EDIT I completely understand and agree that this is still a violation and I need to create a method in Wallet called withdraw that handles the payment for me and that I should call that method inside the Customer class. What I don't get is that according to this process, my first example still violates the Law of Demeter because Invoice is still reaching directly into Customer to get the street. Can somebody help me clear the confusion. I have been searching for the past 2 days trying to let this topic sink in, but it is still confusing.

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• Is it possible to write an htpasswd file that redirects certain users to certain directories?

  - by racl101

  Hi there, Assuming that I have a domain, say, mydomain.com and three directories under it call them dir1, dir2 and dir3, then is it possible to put an htpasswd file at the web root and have it redirect authenticated users to their respective directories (e.g. user joecorleone101 always get redirected to dir3 upon being authenticated.)? First of all I want to know if this is possible and second is it safe or practical (or impractical)? Am I thinking about it the wrong way? Should I maybe use an htaccess file?

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• Count function on tree structure (non-binary)

  - by Spevy

  I am implementing a tree Data structure in c# based (largely on Dan Vanderboom's Generic implementation). I am now considering approach on handling a Count property which Dan does not implement. The obvious and easy way would be to use a recursive call which Traverses the tree happily adding up nodes (or iteratively traversing the tree with a Queue and counting nodes if you prefer). It just seems expensive. (I also may want to lazy load some of my nodes down the road). I could maintain a count at the root node. All children would traverse up to and/or hold a reference to the root, and update a internally settable count property on changes. This would push the iteration problem to when ever I want to break off a branch or clear all children below a given node. Generally less expensive, and puts the heavy lifting what I think will be less frequently called functions. Seems a little brute force, and that usually means exception cases I haven't thought of yet, or bugs if you prefer. Does anyone have an example of an implementation which keeps a count for an Unbalanced and/or non-binary tree structure rather than counting on the fly? Don't worry about the lazy load, or language. I am sure I can adjust the example to fit my specific needs. EDIT: I am curious about an example, rather than instructions or discussion. I know this is not technically difficult...

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• IM and File Transfers Integrated With VoIP

  - by Ehtyar

  I have an Asterisk box serving an office of people. I'd like to provide instant messaging and file sharing capabilities alongside the voice and video capabilities provided by Asterisk (ala Windows Live Messenger, Skype etc). Asterisk does not seem to offer IM outside the context of a SIP call, nor am I aware that it provides file transferring capabilities whatsoever. The clients will be using Jitsi, so there are many protocols to choose from, but I'd like to provide as much integration as possible between the VoIP and IM/file transfer (ideally a single account that facilitates voice/video and IM/file transfer). Is this possible, and if not, what would be the most appropriate alternative? Thank you.

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• How to connect with MySQL server if it won't connect via the socket?

  - by cwd

  I have an account on a shared server. I have jailshell access and also PhpMyAdmin. I want to run mysql commands via SSH but I'm getting an error: $ mysql -u mySqlUser -p mySqlPw Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' I can connect with PHP and phpMyAdmin, so would it be possible to call mysql from the shell and have it connect via an ip and port instead of the socket? The file /var/lib/mysql/mysql.sock does not exist - maybe that is intentional, and the only thing in /etc/my.cnf is [mysqld] skip-innodb More Info I don't have access to change system settings. I did a search in /var for mysql.sock but found nothing. However, phpMyAdmin might be connecting via a socket somehow: Really it would just be great if I could connect via IP. Also tried these two syntaxes: $ mysql -u mySqlUser -p mySqlPw -h localhost $ mysql -u mySqlUser -p mySqlPw -h localhost -P 3306 Both with the same result: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

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• mini-dinstall chmod 0600 changes file: Operation not permitted

  - by V. Reileno

  I'm getting "Operation not permitted" in the mini-dinstall.log everytime a new debian package has been uploaded on the custom debian repository using dput. The deb file is installed successfuly but the changes file remains in the incoming folder. I can not use a post-install script when the changes file can not be processed. How can I fix this problem? Traceback (most recent call last): File "/usr/bin/mini-dinstall", line 780, in install retval = self._install_run_scripts(changefilename, changefile) File "/usr/bin/mini-dinstall", line 826, in _install_run_scripts do_chmod(changefilename, 0600) File "/usr/bin/mini-dinstall", line 193, in do_chmod do_and_log('Changing mode of "%s" to %o' % (name, mode), os.chmod, name, mode) File "/usr/bin/mini-dinstall", line 176, in do_and_log function(*args) OSError: [Errno 1] Operation not permitted: '/srv/debian-repository/mini-dinstall/incoming/debian-repository_1.3_amd64.changes' The mini-dinstall permissions: ls -lad incoming/ drwxrws--- 2 mini-dinstall debian-repository-uploader 4096 Jun 6 11:45 incoming/ ls -la incoming/debian-repository_1.3_amd64.changes -rw-rw---- 1 uploader-user debian-repository-uploader 1322 Jun 6 11:43 incoming/debian-repository_1.3_amd64.changes groups uploader-user uploader-user : uploader-user adm users debian-repository debian-repository-uploader puppet-client-updater groups mini-dinstall mini-dinstall : mini-dinstall debian-repository-uploader Cheers and thanks V.

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• Conference Calling Meetme.conf PROBLEM - Astarisk

  - by Zafer

  I am facing problem in conference calling (OS ubuntu latest) ... I created a conference Room and an extension no .. when i dial from my softphone (3cx or X-Lite) it says "YOU ARE ENTERING CONFERENCE NO 1234. YOU ARE CURRENTLY THE ONLY PERSON IN THE CONFERENCE) and then a music for a second and then shows connected... Now when i dial form another soft phone the same extension it goes to second conference room and plays the same message .. if i create only one conference room .. the second no. didn't connect to it and says no conference room. CAN some one help me out .... I just want to create a conference room OR extension where 4-5 or 6 people can call and make a conference ... i am not very much expert in linux and asterisk so simple steps to achieve my goal .. Thanks

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• How to Script a backup for each database on an MSSQL Engine?

  - by Geo

  We need to backup 40 databases inside an MS SQL Server Engine. We backup each database with the following script: BACKUP DATABASE [dbname1] TO DISK = N'J:\SQLBACKUPS\dbname1.bak' WITH NOFORMAT, INIT, NAME = N'dbname1-Full Database Backup', SKIP, NOREWIND, NOUNLOAD, STATS = 10 GO declare @backupSetId as int select @backupSetId = position from msdb..backupset where database_name=N'dbname1' and backup_set_id=(select max(backup_set_id) from msdb..backupset where database_name=N'dbname1' ) if @backupSetId is null begin raiserror(N'Verify failed. Backup information for database ''dbname1'' not found.', 16, 1) end RESTORE VERIFYONLY FROM DISK = N'J:\SQLBACKUPS\dbname1.bak' WITH FILE = @backupSetId, NOUNLOAD, NOREWIND GO We will like to add to the script the functionality of taking each database and replacing it in the above script. Basically a script that will create and verify each database backup from an engine. I am looking for something like this: For each database in database-list sp_backup(database) // this is the call to the script above. End For any ideas?

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• Is using a dedicated thread just for sending gpu commands a good idea?

  - by tigrou

  The most basic game loop is like this : while(1) { update(); draw(); swapbuffers(); } This is very simple but have a problem : some drawing commands can be blocking and cpu will wait while he could do other things (like processing next update() call). Another possible solution i have in mind would be to use two threads : one for updating and preparing commands to be sent to gpu, and one for sending these commands to the gpu : //first thread while(1) { update(); render(); // use gamestate to generate all needed triangles and commands for gpu // put them in a buffer, no command is send to gpu // two buffers will be used, see below pulse(); //signal the other thread data is ready } //second thread while(1) { wait(); // wait for second thread for data to come send_data_togpu(); // send prepared commands from buffer to graphic card swapbuffers(); } also : two buffers would be used, so one buffer could be filled with gpu commands while the other would be processed by gpu. Do you thing such a solution would be effective ? What would be advantages and disadvantages of such a solution (especially against a simpler solution (eg : single threaded with triple buffering enabled) ?

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• Lead Programmer definition clarification

  - by Junaid

  I am working on PHP and MySQL based web application for more than 5 years now. I started my career from Intern - Jr Developer - Software Developer - Sr. Software Engineer [Team Lead] that's what I am nowadays. I was looking at the link at Wikipedia regarding who is a lead programmer. The link states the following: A lead programmer is a software engineer in charge of one or more software projects. Alternative titles include Development Lead, Technical Lead, Senior Software Engineer, Software Design Engineer Lead (SDE Lead), Software Manager, or Senior Applications Developer. When primarily contributing in a high-level enterprise software design role, the title Software Architect (or similar) is often used. All of these titles can have different meanings depending on the context. My current job responsibilities are more or less like a Development Lead and to some extent near Software Architect because I usually design the core structure of new products and managing 2-3 project simultaneously and in the meantime involved in assisting other teams regarding the structural design of their projects, I am usually on call with clients along with project managers, I code most of the time when my team stuck somewhere / workload / integrating some third party API and etc. Primary reason of this writing is to know if I qualify for a Development Lead Title? in accordance with my above mentioned job descriptions?

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• How can I malloc an array of struct to do the following using file operation?

  - by RHN

  How can malloc an array of struct to do the following using file operation? the file is .txt input in the file is like: 10 22 3.3 33 4.4 I want to read the first line from the file and then I want to malloc an array of input structures equal to the number of lines to be read in from the file. Then I want to read in the data from the file and into the array of structures malloc. Later on I want to store the size of the array into the input variable size. return an array.After this I want to create another function that print out the data in the input variable in the same form like input file and suppose a function call clean_data will free the malloc memory at the end. I have tried somthing like: struct input { int a; float b,c; } struct input* readData(char *filename,int *size); int main() { return 0; } struct input* readData(char *filename,int *size) { char filename[] = "input.txt"; FILE *fp = fopen(filename, "r"); int num; while(!feof(fp)) { fscanf(fp,"%f", &num); struct input *arr = (struct input*)malloc(sizeof(struct input)); } }

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• YouTube style linking inside HTML5 Video player

  - by Barney

  After a video has played on YouTube, often there will be a follow up link after the video has finished playing in the form of related videos. I'm looking to implement similar into my HTML5 Video. It would look something like this: At the moment, it seems there is nothing in the W3C spec for this (Links inside HTML5 video). Could anyone advise on a method of achieving? I have 50-100 videos on my site on which I would like to implement. Currently I'm thinking a Javascript callback which initiates the Call to action buttons, though I have a feeling this could get complicated...

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• Ubuntu 12.10 Unity & Gnome Shell problems

  - by user109292

  I'm experiencing some problems since I decided to upgrade Ubuntu to 12.10 version two days ago. Firstly, I cannot select the Unity environment I previously used on 12.04 without opening the terminal with Ctrl+Alt+T and typing setsid unity. When I select the Unity environment on the account page when I start the computer, it automatically switch back to Gnome and launch my session. I tried to set back Unity using the setsid unity tip, and it worked fine. But after few minutes, everything freeze and I cannot control anything anymore. The only option left is to press the Power button of my Asus EeePC and switch everything off. Question 1 : What can I do to get my Unity environment back on 12.10 from the start, without using the terminal every time? What should I do to prevent the all system to freeze once done? Secondly, and since I cannot use Unity for new, I'm using an other interface, GNOME Shell. What's bothering me is that the Activities bar (let's call it like that, 'cause I don't know the proper name) and the Internet bar (or any bar from any other window) cannot merge into one another, reducing the display of the screen I'm actually using to peanuts! Question 2 : Is there a way to merge those two bars? Or is there a way to hide the Activities bar when I'm not using it like on Unity environment?

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