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• How to ask UIImageView if MultipleTouchEnabled is "YES"

  - by Rob

  I have created a few UIImageViews programmatically, but I have a feeling that even though I setMultipleTouchEnabled to YES during the setup, it is not getting set properly and it's leading to multi-touch issues. My question is, within touchesBegan how do I go about asking the UIImageView that was touched if it has MultipleTouchEnabled or not? I am fairly new to this so I'm really stumbling through code and learning as I go (with your help of course). Thank you ahead of time!

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• Sizeof struct in GO

  - by Homer J. Simpson

  I'm having a look at Go, which looks quite promising. I am trying to figure out how to get the size of a go struct, for example something like type Coord3d struct { X, Y, Z int64 } Of course I know that it's 24 bytes, but I'd like to know it programmatically.. Do you have any ideas how to do this ?

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• Identify cause of hundreds of AJP threads in Tomcat

  - by Rich

  We have two Tomcat 6.0.20 servers fronted by Apache, with communication between the two using AJP. Tomcat in turn consumes web services on a JBoss cluster. This morning, one of the Tomcat machines was using 100% of CPU on 6 of the 8 cores on our machine. We took a heap dump using JConsole, and then tried to connect JVisualVM to get a profile to see what was taking all the CPU, but this caused Tomcat to crash. At least we had the heap dump! I have loaded the heap dump into Eclipse MAT, where I have found that we have 565 instances of java.lang.Thread. Some of these, obviously, are entirely legitimate, but the vast majority are named "ajp-6009-XXX" where XXX is a number. I know my way around Eclipse MAT pretty well, but haven't been able to find an explanation for it. If anyone has some pointers as to why Tomcat may be doing this, or some hints on finding out why using Eclipse MAT, that'd be appreciated!

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• PHP ORMs: Doctrine vs. Propel

  - by Tom

  Hi, I'm starting a new project with symfony which is readily integrated with Doctrine and Propel, but I of course need to make a choice.... I was wondering if more experienced people out there have general pros and/or cons for going with either of these two? Thanks a lot. EDIT: Thanks for the all the responses, useful stuff. There's no truly correct answer to this question so I'll just mark as approved the one that got the most popular up-votes.

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• Lack of example escaping special characters in struts2

  - by Dewfy

  Hello colleagues! Googling today I couldn't found sample or mentioning of best practice: how to escape user input in Struts2. Of course I can manually convert characters on validate() method, but it looks too obvious. So may be exists some automation to avoid code/script injection?

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• Jqeury Validate() special function

  - by kevin

  Hi there, i'm using the Jquery validate() plugin for some forms and it goes great. The only thing is that i have an input field that requires a special validation process. Here is how it goes: The Jquery validate plugin is called in the domready for all the required fields. Here is an exemple for an input: <li> <label for="nome">Nome completo*</label> <input name="nome" type="text" id="nome" class="required"/> </li> And here is how i call my special function: <li> <span id="sprytextfield1"> <label for="cpf">CPF* (xxxxxxxxxxx)</label> <input name="cpf" type="text" id="cpf" maxlength="15" class="required" /> <span class="textfieldInvalidFormatMsg">CPF Inv&aacute;lido.</span> </span> </li> And at the bottom of the file i call the Spry function: <script type="text/javascript"> <!-- var sprytextfield1 = new Spry.Widget.ValidationTextField("sprytextfield1","cpf"); //--> </script> Of course i call the Spry css and js files in the head section as well as my special-validate.js. When i just use the Jquery validate() plugin and click on the send button, the page goes automatically back to the first mistaken input field and shows the error type (not a number, not a valid email etc.). But with this new function, this "going-back-to-the-first-mistake" feature doesnt work, of course, because the validate() function sees it all good. I already added a rule for another form (about pictures upload) and it goes like this: $("#commentForm").validate({ rules: { foto34: { required: true, accept: "jpg|png|gif" } } }); Now my question is, how can i add the special validation function as a rule of the whole validation process ? Here is the page to understand it better: link text and the special field is the first one: CPF. Hope i was clear explaining my problem. Thanks in advance. kevin

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• natural language processing internships

  - by user552127

  Hi All, Pls someone guide me in finding paid Grad internships in Natural Language Processing over the summer. I am really interested in NLP/ML and have taken up the excellent course offered at my school in Fall. I would be glad to work for passionate startups that do actual NLP tasks such as semantic extraction (and not just information retrieval) etc. I have worked with Java and teaching myself Python in all NLP tasks. Thanks, Sanjay

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• Open-source generic web service to database interface?

  - by Joe Strout

  I'm looking for a thin, generic layer (probably written in PHP) that sits between a database (probably MySQL) and web service clients (which could be anything). I imagine there would be config files of some sort that tell it how to map web service requests to database queries (or other DB commands). It would also need to handle authentication and authorization, of course. I've done some googling but failed to find anything that fits the bill. Can anyone suggest something like this?

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• python multithread "maximum recursion depth exceed"

  - by user293487

  I use Python multithread to realize Quicksort. Quicksort is implement in a function. It is a recursive function. Each thread calls Quicksort to sort the array it has. Each thread has its own array that stores the numbers needs to be sorted. If the array size is smaller (<10,000). It runs ok. However, if the array size is larger, it shows the "maximum recursion depth exceed". So, I use setrecursionlimit () function to reset the recursion depth to 1500. But the program crash directly...

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• Launch IE with specific BHO enabled

  - by watsonmw

  I have a IE BHO plugin that I only want to be enabled when the user launches IE from my program (The program start IE using CreateProcess()). I don't want this BHO to be enabled when a user launches IE from outside my program, as that would mean any problems in the BHO could potentially mess up the user's normal browsing experience. What's the best way to do this? One way would be to register the BHO, launch IE and then quickly unregister the BHO. This seems kind of messy though, as a crash in the program that launches IE could cause the BHO to remain registered.

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• execute some code at a certain time daily

  - by raklos

  Hi, How can I execute some code, once a day. e.g. call MyMethod() at 3pm every day. (provided the app is running of course)... Im trying to do this in c# winforms.

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• NSMutable String "Out of scope"

  - by Garry

  I have two NSMutableString objects defined in my viewController's (a subclass of UITableViewController) .h file: NSMutableString *firstName; NSMutableString *lastName; They are properties: @property (nonatomic, retain) NSMutableString *firstName; @property (nonatomic, retain) NSMutableString *lastName; I synthesis them in the .m file. In my viewDidLoad method - I set them to be blank strings: firstName = [NSMutableString stringWithString:@""]; lastName = [NSMutableString stringWithString:@""]; firstName and lastName can be altered by the user. In my cellForRowAtIndexPath method, I'm trying to display the contents of these strings: cell.detailTextLabel.text = [NSString stringWithFormat:@"%@ %@", firstName, lastName]; but this is causing the app to crash as soon as the view controller is displayed. Using the debugger, it seems that both firstName and lastName are "out of scope" or that they don't exist. I'm new to Xcode but the debugger seems to halt at objc_msgSend. What am I doing wrong?

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• Help with game development. Render loop?

  - by John

  Hello, I'm working on a simple game, this is my first game project. Most of the samples I find have a Render Loop where all the game logic is made too and I just don't like this. Let's say I have a ball with X=0, and a wall in X=10 and in a slow machine, the first loop places the ball in X=7 and in a second loop, it places the ball in X=14. It would just crash the game! Is this "render loop" the right way to make games? Should I write code to check for things like this in every frame? Example, new frame X=14, last frame have X=7, so I should check if there's anything from X=7 to X=14?? I was thinking that I should have a separated thread for the game logic and in the render loop, I should just "take a snapshot" of the current game logic and display that, no? How do you guys, experienced game developers work around this? thanks!

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• choosing the right RAID level

  - by student

  Recently, we bought a "HP-DL380 G6 Server" with 6 146GB (SCSI)HDD for our colleague course management application and website with 10000 daily visitors. we want to choose the best RAID level. how can we choose the right RAID level ? what is the best RAID level for our application ?

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• Core Data and many Entity

  - by mr.octobor

  I'm newbie and I must save "Ranking" and "Level" of user. I create file Ranking.xcdatamodel for save "Ranking" with entity name Ranking (property is Rank, Name) I can save and show it. but when I create entity Level (property is CurrentLevel) my program is crash and show this message Unresolved error Error Domain=NSCocoaErrorDomain Code=134100 UserInfo=0x60044b0 "Operation could not be completed. (Cocoa error 134100.)", { metadata = { NSPersistenceFrameworkVersion = 248; NSStoreModelVersionHashes = { Users = ; }; NSStoreModelVersionHashesVersion = 3; NSStoreModelVersionIdentifiers = ( ); NSStoreType = SQLite; NSStoreUUID = "41225AD0-B508-4AA7-A5E2-15D6990FF5E7"; "_NSAutoVacuumLevel" = 2; }; reason = "The model used to open the store is incompatible with the one used to create the store"; } I don't know how to save "Level" please suggest me.

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• How to develop a DirectFB app without leaving X.11 environment.

  - by Edu Felipe

  Hi folks, I'm trying to develop a GUI application for an embedded platform, without any windowing whatsoever and I'm doing that with DirectFB, and it suits my needs very fine. Since the embedded I develop for is not that powerful, I would really like to try to develop on my own Ubuntu desktop. The problem is Framebuffer is conflicting with X.org causing me to leave the whole desktop, and shutdown X.org just to see the result of my changes. Is there a good framebuffer simulator that suits my needs? Qt has one, called QVFb, but it only works for developing Qt apps, and the VNC back-end of DirectFB always crash. So, any ideas?

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• TFS Client APIs for creating workitem templates?

  - by amazedsaint

  Of course, it is pretty possible to create work items, get a list of work items etc in TFS. In addition to this, we need to have the functionality of allowing our users to create their own work item templates, for various file types. Whether the TFS Client APIs are capable of uploading work item templates to TFS server?

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• Creating an image of an Android phone

  - by Danny

  Does anyone know how to create a 1:1 disk image of an Android phone? I am taking a forensics course and our final project involves creating tools to recover information from a suspect's Android based phone, however to do this we need to be able to create a 1:1 image of the phone's disk for baseline comparisons. Also would the image be loadable into AVD?

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• What are some topics you'd like to see covered in an 'Introduction to Network Security' book?

  - by seth.vargo

  I'm trying to put together a list of topics in Network Security and prioritize them accordingly. A little background on the book - we are trying to gear the text towards college students, as an introduction to security, and toward IT professionals who have recently been tasked with securing a network. The idea is to create a book that covers the most vital and important parts of securing a network with no assumptions. So, if you were a novice student interested in network security OR an IT professional who needed a crash course on network security, what topics do you feel would be of the upmost importance in such a text?

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• Is Haskell "mainstream", or is it mainly used by hobbyists and academics?

  - by Asher

  I came across a post where someone wrote something inaccurate about Haskell (won't go into it) and he got flammed for it. Which (pleasantly) surprised me. About 3 years ago I read this joke about Haskell: All the haskell programmers in the world can fit into a 747 and if that plane were to crash no one would care... or something along those lines. Which brings me to my question: how healthy is the Haskell community, anyway? Is Haskell "mainstream"? Is it mainly used by hobbiest and academics or someone making some serious money from it (which is the true yardstick of how good a language is - just kidding, geez!)?

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• Localizing MVVM based WPF applications

  - by bitbonk

  What would be a good aproach to localize a MVVM based WPF allication that can change its language at runtime? Of course I could create a string property in the ViewModel for each and every string that is displayed somewhere in the View but that seems rather tedious to me. Is there a common approach/best practice for this?

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• How to manipulate page number in FOP?

  - by Fred Rocha

  I am using Apache FOP 0.95, and all I want to do is add 1 to the current page number. So, on page 12, I want to show 12 / 13. Then nothing on page 13, of course. Any ideas how I could do this, perhaps by manipulating <fo:page-number /> ? Thanks y'all!

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• When is a C++ terminate handler the Right Thing(TM)?

  - by Joseph Garvin

  The C++ standard provides the std::set_terminate function which lets you specify what function std::terminate should actually call. std::terminate should only get called in dire circumstances, and sure enough the situations the standard describes for when it's called are dire (e.g. an uncaught exception). When std::terminate does get called the situation seems analagous to being out of memory -- there's not really much you can sensically do. I've read that it can be used to make sure resources are freed -- but for the majority of resources this should be handled automatically by the OS when the process exits (e.g. file handles). Theoretically I can see a case for if say, you needed to send a server a specific message when exiting due to a crash. But the majority of the time the OS handling should be sufficient. When is using a terminate handler the Right Thing(TM)? Update: People interested in what can be done with custom terminate handlers might find this non-portable trick useful.

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• 2 IE8 behave differently

  - by portoalet

  Hi, I am having a problem where 2 IE8 (with the same version number 8.0.6001.18702) behave differently in processing a webpage. The misbehaving one is of course used by the client :) , and I just cannot reproduce it on my machine or on our test machine. How can I narrow down what is causing this problem? Thanks

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• iPhone In-App Purchase Store Kit error -1003 "Cannot connect to iTunes Store"

  - by Rei

  Hi all- I've been working on adding in-app purchases and was able to create and test in-app purchases using Store Kit (yay!). During testing, I exercised my app in a way which caused the app to crash mid purchase (so I guess the normal cycle of receiving paymentQueue:updatedTransactions and calling finishTransaction was interrupted). Now I am unable to successfully complete any transactions and instead am getting only transactions with transactionState SKPaymentTransactionStateFailed when paymentQueue:updatedTransactions is called. The transaction.error.code is -1003 and the transaction.error.localizedDescription is "Cannot connect to iTunes Store"! I have tried removing all products from iTunesConnect, and rebuilt them using different identifiers but that did not help. I have also tried using the App Store app to really connect to the real App Store and download some apps so I do have connectivity. Finally, I have visited the Settings:Store app to make sure I am signed out of my normal app store account. Any ideas? -Rei

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