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  • onchange on dropdownlist

    - by Abu Hamzah
    my qeustion is continuation of what i have asked see the link. http://stackoverflow.com/questions/2640001/load-country-state-city i have expand to load my drop downs list from db and i just need a way to wire onchange method in my first dropdownlist and second, please see the code. appreciate any help. $(document).ready(function() { var options = { type: "POST", url: "SearchPage.aspx/LoadCountry", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(msg) { var returnedArray = msg.d; list = $("#country"); for (var i = 0; i { list.append("" + returnedArray[i].Name + ""); } error : function(msg) { debugger } } }; $.ajax(options); }); how would i do for STATE dropdownlist ?

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  • What is the correct way of handling a reloaded view after it was dismissed?

    - by favo
    Hi, I have the same problem as the guy here: http://stackoverflow.com/questions/2682844/uiimagepickercontroller-reloads-view-after-its-dismissed I have a UIView with a UIDatePicker within a Popover. When the Popover is dismissed and presented again, it sometimes resets the Picker in the view because hidden views are unloaded when a memory warning occurs. This is the part displaying the view: endCompareDateTimePicker.picker.maximumDate = [NSDate dateWithTimeIntervalSinceNow:0]; [endCompareDateTimePopover presentPopoverFromRect:sender.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES]; The picker (IBOutlet UIDatePicker) does not stay initiated. Adding a [endCompareDateTimePicker loadView] helped out and got me the picker initiated to set the correct date values before displaying the view. While this is working, I dont think this is the proper way doing this. What would be the correct way to handle this situation?

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  • C++/g++: Concurrent programm

    - by phimuemue
    Hi, I got a C++ program (source) that is said to work in parallel. However, if I compile it (I am using Ubuntu 10.04 and g++ 4.4.3) with g++ and run it, one of my two CPU cores gets full load while the other is doing "nothing". So I spoke to the one who gave me the program. I was told that I had to set specific flags for g++ in order to get the program compiled for 2 CPU cores. However, if I look at the code I'm not able to find any lines that point to parallelism. So I have two questions: Are there any C++-intrinsics for multithreaded applications, i.e. is it possible to write parallel code without any extra libraries (because I did not find any non-standard libraries included)? Is it true that there are indeed flags for g++ that tell the compiler to compile the program for 2 CPU cores and to compile it so it runs in parallel (and if: what are they)?

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  • JavaApplicationStub with CFBundleDocumentTypes

    - by mystro
    I'm trying to use CFBundleDocumentTypes to associate a custom file extension with my application. As far as I can tell, this seems to "work" -- my application launches when I double click the file. However, no callback is registered through the ApplicationListener events I setup in java. I used the code listed in http://stackoverflow.com/questions/1460193/set-default-file-association-mac-os-x-java-package-maker-installer to do the file association, and the file association itself appears fine, but it seems as if it is the application stub trying to launch the file, and thus fails. I added the Apple ApplicatinListener code to my java application at (similar to http://developer.apple.com/mac/library/documentation/Java/Reference/1.5.0/appledoc/api/index.html?com/apple/eawt/Application.html) but it doesn't seem like my application ever gets a call back. the code is similar to Application.getApplicatin().addApplicationListener( new ApplicationAdapter() { public void handleOpenFile(ApplicationEvent evt) { //some logging message here that I never get} }); Any help would be appreciated

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  • JavaApplicationStub with CFBundleDocumentTypes

    - by mystro
    I'm trying to use CFBundleDocumentTypes to associate a custom file extension with my application. As far as I can tell, this seems to "work" -- JavaApplicationStub launches my application when I double click the file. However, no callback is registered through the ApplicationListener events I setup in java. I used the code listed in http://stackoverflow.com/questions/1460193/set-default-file-association-mac-os-x-java-package-maker-installer to do the file association, and the file association itself appears fine, but it seems as if it is the application stub trying to launch the file, and thus fails. I added the Apple ApplicatinListener code to my java application at (similar to http://developer.apple.com/mac/library/documentation/Java/Reference/1.5.0/appledoc/api/index.html?com/apple/eawt/Application.html) but it doesn't seem like my application ever gets a call back. the code is similar to Application.getApplicatin().addApplicationListener( new ApplicationAdapter() { public void handleOpenFile(ApplicationEvent evt) { //some logging message here that I never get} }); I should perhaps mention that I'm also using SWT... Any help would be appreciated

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  • memory usage in iOS

    - by varun
    My app has a simple UI interface having simple buttons, date picker, picker view, table view, action sheet, toolbar, alert boxes etc. No images, no network access. Just plain simple UI. It accesses SQLite database a lot. ARC option is enabled. I have many questions to ask: In .h files, I am defining IBOutlets like @property(nonatomic, retain) IBOutlet UIButton *bt; Where do i need to do bt=nil? in didReceiveMemoryWarning or viewDidLoad Live Bytes in Instruments tool is 4-5MB. Is it enough or I need to reduce memory usage? If so, how can I do so? Please mention few important points. Also, what all need to be added to the following methods? applicationDidReceiveMemoryWarning UIApplicationDidReceiveMemoryWarningNotification

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  • Tips for measuring the parallelism speed-up in multi-core development.

    - by fnCzar
    I have read many of the good questions and answers around multi-core programming how-tos etc. I am familiar with concurrency, IPC, MPI etc but what I need is advice on how to measure speed-up which will help in making a business case of spending the time to write such code. Please don't answer with "well run it with single-core code then multi-core code and figure out the difference". This is neither a scientific nor a reliable way to measure performance improvement. If you know of tools that will do some of the heavy lifting please mention them. Answers pertaining to methodology will be more fitting but listing tools is ok as well.

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  • Backdoor Strategy- opinion needed.

    - by the Hampster
    I'm creating an application to track publications and grants for a university. Professors will need to put they CV into the system when it is up and running. Yeah, right. The person in charge is planning on hiring someone to input all of the information, but my questions is how? The strategy I'm thinking of is to install a backdoor. The lucky undergrad can log in as any professor using the backdoor. Once all the data is removed, the backdoor can be removed. Doing so would probably be as simple as editing out a comment in the config file. The IT guys would still have access, but since they control the machines, they would have access anyway. Are there any flaws to this strategy?

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  • Check if a symlink has changed

    - by BCS
    I have a daemon that, when it's started, loads its data from a directory that happens to be a symlink. Periodically, new data is generated and the symlink updated. I want a bash script that will check if the current symlink is the same as the old one (that the daemon started with) and if not, restart the daemon. My current thought is: if [[ ! -e $old_dir || $(readlink "$data_dir") == $(readlink "$old_dir") ]]; then echo restart ... ln "$(readlink "$data_dir")" "$old_dir" -sf else echo no restart fi The abstract requirement is: each time the script runs, it needs to check if a symlink on a given path now points to a something other than it did the last time and if so do something. (The alternative would be to check if the data at the path has changed but I don't see that being any cleaner.) My questions: Is this a good approach? Does anyone have a better idea? Where should I put $old_dir?

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  • Getting percentages.

    - by user287798
    Hi, i have got a standing answer in this thread. http://stackoverflow.com/questions/2396203/get-the-count-of-elements-where-candidate-has-won But i am failing to get the percentage, what am i doing wrong. I have the code below. var s4 = from can in allCandidates let noDists= ((from d in root.Elements("Provinces") select d.Attribute("Province").Value).Distinct()).Count() let count = (from winner in (from p in root.Descendants("Province_Data") let maxVotes = (from c in p.Elements("Candidate") select c) .Max(x => ((int)x.Element("votes"))) select (from c in p.Elements("Candidate") select c).Where(x => ((int)x.Element("votes")) == maxVotes) .First().Element("name").Value ) where winner == can select winner).Count() orderby count descending select new { Candidate = can, NumberOfProvincesWon = count,Percentage= (count/noDists)*100}; foreach (var d in s4) Console.WriteLine(" {0}", d.ToString());

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  • Get Array value by string of keys

    - by Esben Petersen
    Hello, i'm building a template engine for my next project, which is going great. It replaces {tag} with a corresponding value. But, i want {tag[0][key]} to be replaced as well. All i need to know is how to get the value, if i have the string representation of the array and key, like this: $arr = array( 0=>array( 'key'=>'value' ), 1=>array( 'key'=>'value2' ) ); $tag = 'arr[0][key]'; echo($$tag); This is a very simple version of the problem, i hope you understand it. Or else i would be happy to anwser any questions about it :) Thanks for any help in advantage

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  • Changing Dropdown based on Other Dropdown Menu

    - by Shaded
    I've seen a few questions like this, but mine is a bit more specific so I hope this isn't considered a repost. I am working on a website that is built with struts 2 and hibernate. I need to dynamically populate a drop down menu using data from a sql query based on an option selected in another drop down menu. So basically when the first option is selected I need to rehit the server and get the results from a query like SELECT column FROM table WHERE option = dropDownOption On top of that, I would really like to use ajax to only refresh the affected elements, however I'm really unfamiliar with ajax. I have jquery on this project and I found they have some ajax built in, but is this a good method for using it? any advice on this topic would be appreciated.

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  • Saving data that is in a table efficiently and also is easy to retrieve and echo back out

    - by Harry
    Information I currently have a table which image is below, Problem I have made this table using ul & li Here is the code http://jsfiddle.net/8j2qe/1/ Question What would be the best way of storing the data in the image and easily displaying it? Keeping in mind that each column can only have 1 entry. Thank you! And any questions will be answered ASAP! EDIT Sorry, I dont think I was clear enough in my initial question. What I am asking is, what is the best way to store and then display this type of data. I want to DISPLAY data from my database to show like it would in the image. Should I have a column in my database for each column on the table, then say either A,B,C or D depending on what column it is in but then how would I display it using PHP in my code provided? Im struggling to find a good way of explaining this, I am sorry.

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  • Why are most really fast servers written in C instead of C++?

    - by orokusaki
    I'm trying to decide which to learn and I've read all the "Which is better" questions/arguments, so I thought I'd get your take on something more specific. Is there a platform dependency issue that C++ developers run into with such applications? Or, is it because there are more C developers out there than C++? I also noticed that many more third party C modules exist for Python even thought C++ modules are supported. From what I've read on different threads the consensus is that C++ is easier and faster to write, and runs just as fast. Am I missing something really big. Examples: NGINX APE (comet server) Apache

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  • getting started with qpid server

    - by London
    I'd like to get started with qpid, can anyone recommend some useful resources/links/code examples for me to study? I'm interested about java implementations?I'd like to create message sender/listener. I've already done messaging with jboss where I send the message to the queue and the listener picks it up from there, what is different with qpid? Is it the same only replacing jboss as a server with qpid or?I'm new to all of this it might sound weird when I ask it. Oh yes similar question: http://stackoverflow.com/questions/1693099/get-started-with-qpid Doesn't really help me much. Any hints would help me a lot. thank you

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  • Are upper bounds of indexed ranges always assumed to be exclusive?

    - by polygenelubricants
    So in Java, whenever an indexed range is given, the upper bound is almost always exclusive. From java.lang.String: substring(int beginIndex, int endIndex) Returns a new string that is a substring of this string. The substring begins at the specified beginIndex and extends to the character at index endIndex - 1 From java.util.Arrays: copyOfRange(T[] original, int from, int to) from - the initial index of the range to be copied, inclusive to - the final index of the range to be copied, exclusive. From java.util.BitSet: set(int fromIndex, int toIndex) fromIndex - index of the first bit to be set. toIndex - index after the last bit to be set. As you can see, it does look like Java tries to make it a consistent convention that upper bounds are exclusive. My questions are: Is this the official authoritative recommendation? Are there notable violations that we should be wary of? Is there a name for this system? (ala "0-based" vs "1-based")

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  • Badword filter in PHP?

    - by morpheous
    I am writing a badword filter in PHP. I have a list of badwords in an array and the method cleanse_text() is written like this: public static function cleanse_text($originalstring){ if (!self::$is_sorted) self::doSort(); return str_ireplace(self::$badwords, '****', $originalstring); } This works trivially, for exact matches, but I wanted to also censor words that have been disguised like 'ab*d' where 'abcd' is a bad word. This is proving to be a bit more difficult. Here are my questions: Is a badword filter worth bothering with (it is a site for professionals so a certain minimum decorum is required - I would have thought) Is it worth the hustle of trying to capture obvious work arounds like 'f*ck' - or should I not attempt to filter those out. Is there a better way of writing the cleanse_text() method above?

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  • Flex/Air: Sending data with a certificate

    - by BS_C3
    Hello Community, I need to send data from an Air application, using a certificate. This certificate is to be provided by the user through a USB Key. I've got a lot of questions regarding this. Is it possible to do what I'm looking for? If yes, is it possible to do that only with the Flex/Air sdk or should I use Java or some other language to load the certificate? Would anyone have a link where I can learn some more about this? I've been looking through the web, but haven't really found anything useful... Thanks for any help you can provide. Regards. BS_C3

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  • Using locks inside a loop

    - by Xaqron
    // Member Variable private readonly object _syncLock = new object(); // Now inside a static method foreach (var lazyObject in plugins) { if ((string)lazyObject.Metadata["key"] = "something") { lock (_syncLock) { if (!lazyObject.IsValueCreated) lazyObject.value.DoSomething(); } return lazyObject.value; } } Here I need synchronized access per loop. There are many threads iterating this loop and based on the key they are looking for, a lazy instance is created and returned. lazyObject should not be created more that one time. Although Lazy class is for doing so and despite of the used lock, under high threading I have more than one instance created (I track this with a Interlocked.Increment on a volatile shared int and log it somewhere). The problem is I don't have access to definition of Lazy and MEF defines how the Lazy class create objects. My questions: 1) Why the lock doesn't work ? 2) Should I use an array of locks instead of one lock for performance improvement ?

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  • What Programming Book would you NOT recommend to Developers?

    - by Ender
    Like a lot of people on Stack Overflow I love to read books about programming, almost as much as I love to read the lists that people add onto their websites, Blog's and this very website. However, for every gem there are a thousand turds, and to one developer a gem could just be a shiny turd to another. Whilst there are hundreds of book questions on this website asking users to recommend books that they have loved I have decided (after looking for a similar question and not finding it) to create a list of books that users have detested. After all, if we're going to fork out money for these books it'd be a good idea to get both positive and negative aspects out there. Please refer to a specific book, and with it add an image of either the latest version or the version you have read. Also, if you have the time please comment on the answers to provide your experiences with the books.

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  • MessageBox.Show not raising HelpRequested event

    - by Trevortni
    I have a form that is showing a MessageBox using MessageBox.Show, and trying to receive events from the Help button on the MessageBox so I can execute my own code. The Microsoft documentation shows how to do this; however, using what is suggested does not work. Here's a shortened version of my code: Private Function MethodName() As Boolean AddHandler Me.HelpRequested, AddressOf Me.MsgBoxHelpRequested Select Case MessageBox.Show("Text", "Title", MessageButtons.YesNoCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2, 0, True) Case MsgBoxResult.Yes ' Do stuff Case MsgBoxResult.No ' Do stuff Case MsgBoxResult.Cancel RemoveHandler Me.HelpRequested, AddressOf Me.MsgBoxHelpRequested Return False End Select RemoveHandler Me.HelpRequested, AddressOf Me.MsgBoxHelpRequested End Function Private Sub MsgBoxHelpRequested(ByVal sender As Object, ByVal hlpevent As System.Windows.Forms.HelpEventArgs) ' Breakpoint that never gets hit ' More code End Sub I've been searching for a solution to this problem, but the best I've found is this question: http://stackoverflow.com/questions/2407880/how-to-detect-help-button-press-in-windows-forms-messagebox that refers me back to the same Microsoft code that doesn't seem to be working. Can anybody help me with this? Thank you.

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  • Transitioning from C++ to C#

    - by Jim
    I am very experienced in C and C++ but am having problems finding current opportunities. I decided to switch to C# but noticed that while the syntax is very similar, the programming styles are very different (we don't have IEnumerable etc in C). So the problem I am having now is having 20 years of experience but is only a junior when it comes to interviewing for a C# job. Most of the problems are me not being able to answer questions like 1) How do you do XYZ in Sql Server? 2) What's the use of in Spring.NET In other words, the phone interviewers don;t care if you know DB programming or not - they want to know if you know SQL Server. I am frustrated because the guys who are doing the interviews seem to be so narrow sighted in knowing ONLY C#, .NET and SQL Server, that I don't know how to get past them.

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  • How to analyse Wikipedia article's data base with R?

    - by Tal Galili
    Hi all, This is a "big" question, that I don't know how to start, so I hope some of you can give me a direction. And if this is not a "good" question, I will close the thread with an apology. I wish to go through the database of Wikipedia (let's say the English one), and do statistics. For example, I am interested in how many active editors (which should be defined) Wikipedia had at each point of time (let's say in the last 2 years). I don't know how to build such a database, how to access it, how to know which types of data it has and so on. So my questions are: What tools do I need for this (besides basic R) ? MySQL on my computer? RODBC database connection? How do you start planning for such a project?

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  • Active Record's SessionScope in BL or DL ?

    - by StupidDeveloper
    Imagine that I have 3 projects: DL, BL and WS. DL contains Active Record implementation with all the mappings, BL has some logic (calling various DL methods) and finally WebService project exposes some BL methods (using some DTO mappings). The questions are: Should I put all data related methods in DL or is it allowed to use SessionScope in BL ? There are some complicated stuff that is right now done on BL. Should/can BL operate on classes-mappings of the Active record? The question is where should be the translation to DTO be made (at the BL level? ) ?

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  • Do MySQL Locked Tables affect related Views?

    - by CogitoErgoSum
    So after reading http://stackoverflow.com/questions/1415602/performance-in-pdo-php-mysql-transaction-versus-direct-execution in regards to performance issues I was thinking about I did some research on locking tables in MySQL. On http://dev.mysql.com/doc/refman/5.0/en/table-locking.html Table locking enables many sessions to read from a table at the same time, but if a session wants to write to a table, it must first get exclusive access. During the update, all other sessions that want to access this particular table must wait until the update is done. This part struck me particularly becuase most of our queries will be updates rather than inserts. I was wondering if one created a table called foo on which all updates/inserts were carried out and then a view called foo_view (A copy of foo, or perhaps foo and a linkage of several other tables plus foo) on which all selects occured, would this locking issue still occur? That is, would SELECT quries on foo_view still have to wait for an update to finish on foo?

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