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• PayPal sandbox Buy Now Problem

  - by Tushar Ahirrao

  Hi , I have paypal sandbox test account. I want to create a 'buy Now' button. I am trying it with GWT. But its even not working with simple HTML form. It displays a 'Buy Now' button on HTML page and after clicking on it redirects to PayPal site. Where it ask to login to buy product but after that it goes on displying message: The email address or password you have entered does not match our records. Please try again. I am using buyer user to purchase product. I am pretty sure about the username and password. Providing here the simple HTML form which I am trying: <form action="https://www.paypal.com/cgi-bin/webscr" method="post" id="payPalForm"> <input type="hidden" name="item_number" value="1"> <input type="hidden" name="cmd" value="_xclick"> <input type="hidden" name="no_note" value="1"> <input type="hidden" name="business" value="[email protected]"> <input type="hidden" name="lc" value="US"> <input type="hidden" name="button_subtype" value="services"> <input type="hidden" name="cn" value="Add special instructions to the seller"> <input type="hidden" name="no_shipping" value="2"> <input type="hidden" name="rm" value="1"> <input type="hidden" name="bn" value="PP-BuyNowBF:btn_paynow_SM.gif:NonHosted"> <input type="hidden" name="variables" value="http://google.com"> <input type="hidden" name="cancel_return" value="http://google.com"> <input type="hidden" name="notify_url" value="http://google.com"> <input type="hidden" name="return" value="http://freelanceswitch.com/payment-complete /"> <input type="hidden" name="currency_code" value="USD"> <input name="item_name" type="hidden" value="Deal Name"> <input name="amount" type="hidden" value="500"> <input type="submit" name="Submit" value="Submit"> </form> Please advice. Thank you.

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• Difference in output from use of synchronized keyword and join()

  - by user2964080

  I have 2 classes, public class Account { private int balance = 50; public int getBalance() { return balance; } public void withdraw(int amt){ this.balance -= amt; } } and public class DangerousAccount implements Runnable{ private Account acct = new Account(); public static void main(String[] args) throws InterruptedException{ DangerousAccount target = new DangerousAccount(); Thread t1 = new Thread(target); Thread t2 = new Thread(target); t1.setName("Ravi"); t2.setName("Prakash"); t1.start(); /* #1 t1.join(); */ t2.start(); } public void run(){ for(int i=0; i<5; i++){ makeWithdrawl(10); if(acct.getBalance() < 0) System.out.println("Account Overdrawn"); } } public void makeWithdrawl(int amt){ if(acct.getBalance() >= amt){ System.out.println(Thread.currentThread().getName() + " is going to withdraw"); try{ Thread.sleep(500); }catch(InterruptedException e){ e.printStackTrace(); } acct.withdraw(amt); System.out.println(Thread.currentThread().getName() + " has finished the withdrawl"); }else{ System.out.println("Not Enough Money For " + Thread.currentThread().getName() + " to withdraw"); } } } I tried adding synchronized keyword in makeWithdrawl method public synchronized void makeWithdrawl(int amt){ and I keep getting this output as many times I try Ravi is going to withdraw Ravi has finished the withdrawl Ravi is going to withdraw Ravi has finished the withdrawl Ravi is going to withdraw Ravi has finished the withdrawl Ravi is going to withdraw Ravi has finished the withdrawl Ravi is going to withdraw Ravi has finished the withdrawl Not Enough Money For Prakash to withdraw Not Enough Money For Prakash to withdraw Not Enough Money For Prakash to withdraw Not Enough Money For Prakash to withdraw Not Enough Money For Prakash to withdraw This shows that only Thread t1 is working... If I un-comment the the line saying t1.join(); I get the same output. So how does synchronized differ from join() ? If I don't use synchronize keyword or join() I get various outputs like Ravi is going to withdraw Prakash is going to withdraw Prakash has finished the withdrawl Ravi has finished the withdrawl Prakash is going to withdraw Ravi is going to withdraw Prakash has finished the withdrawl Ravi has finished the withdrawl Prakash is going to withdraw Ravi is going to withdraw Prakash has finished the withdrawl Ravi has finished the withdrawl Account Overdrawn Account Overdrawn Not Enough Money For Ravi to withdraw Account Overdrawn Not Enough Money For Prakash to withdraw Account Overdrawn Not Enough Money For Ravi to withdraw Account Overdrawn Not Enough Money For Prakash to withdraw Account Overdrawn So how does the output from synchronized differ from join() ?

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• ActionListener problem

  - by thegamer

  Hello, i am trying to make an actionListener on a button in another button which has also an actionlistener and i just couldn't figure it out for some way. I am trying to make an action on the 2nd button but i couldn't figure it out.If anyone helps me i'd appreciate! here is the code below: import java.awt.; import java.awt.event.; import javax.swing.; import java.io.; import java.util.*; public class basic implements ActionListener{ public static void main(String[] args) { basic process = new basic (); } public basic(){ JFrame fan = new JFrame("Scheme"); JPanel one = new JPanel(new BorderLayout()); fan.add(one); JPanel uno = new JPanel(); uno.setLayout(new BoxLayout(uno, BoxLayout.Y_AXIS)); JButton addB = new JButton("first choice"); addB.setAlignmentX(Component.CENTER_ALIGNMENT); uno.add(addB); addDButton.setActionCommand("hehe"); addDButton.addActionListener(this); one.add(uno,BorderLayout.CENTER); fan.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); fan.setSize(500,700); fan.setLocationByPlatform(true); fan.setVisible(true); } public void actionPerformed(ActionEvent evt) { JPanel markP = new JPanel(new FlowLayout(FlowLayout.RIGHT,10,20)); JDialog dialog = new JDialog((JFrame)null); dialog.getContentPane().add(markP,BorderLayout.CENTER); if (evt.getActionCommand().equals("hehe")) { JLabel title = new JLabel("Proceed"); title.setFont(new Font("Arial",Font.BOLD,15)); markP.add(title,BorderLayout.NORTH); JButton exit = new JButton("Exit"); markP.add(exit); //here i want to create another actionListener on the exit button only without affecting the other content which is in the button "addB " so that when i click on the addB button the J dialog pops up, and than when i click on exit button the program will return to the menu.I couldn't figure it out. dialog.toFront(); dialog.setModal(true); dialog.pack(); // dialog.setLocationRelativeTo(null); // dialog.setVisible(true); } // here the code goes on but the problem is that of the actionListener which is concerned.

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• My listview is not gaining the keyboard focus in Qt

  - by Solitaire

  Hi, i am trying to operate the listview itesm through keyboard focus, its not moving.. can you folks suggest where i am wrong. if i click on the listview from mouse, listview is gaining the focus. i dont no what is wrong. #include <QtGui> #include <QApplication> class Newlist : public QListView { public: Newlist(QWidget *parent = 0); ~Newlist(){}; public: QListView *list; QStringListModel *model; }; Newlist::Newlist(QWidget *parent) : QListView(parent) { list = new QListView(this); list->setViewMode(QListView::ListMode); list->setSelectionMode(QAbstractItemView::SingleSelection); list->setMinimumSize(300,500); model = new QStringListModel(this); QStringList strlist; strlist<<"Test"<<"fest"<<"mest"; list->setModel(model); model->setStringList(strlist); QModelIndex index = model->index(1,0); list->setCurrentIndex(index); QVBoxLayout *layout = new QVBoxLayout(this); layout->addWidget(list); setLayout(layout); list->setFocus(); } class Test : public QMainWindow { public: Test(QWidget *parent = 0); ~Test(){}; private: Mylistview *newlist; QVBoxLayout *layout; }; Test::Test(QWidget *parent) : QMainWindow(parent) { layout = new QVBoxLayout(); newlist = new Mylistview(); this->setCentralWidget(newlist); } int main(int argc, char *argv[]) { QApplication a(argc, argv); Test test; test.showMaximized(); return a.exec(); } Thanks in advance

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• Error:No SharePoint Site exists at the specified URL while deployong the webpart.

  - by Lalit

  Hi, I have build my custom webpart using the visual studio extensions. I want to deploy it. but getting error: No SharePoint Site exists at the specified URL for the solution I have tried to change the "Start browser with URL" from properties of the project in Debug tab. I gave my site name with port as, http://myserver:500/ but still problem there, when a i say build or deploy. Please guide me.

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• Symfony2 bindrequest error

  - by user1321109

  namespace Topxia\LiftBundle\Form; use Symfony\Component\Validator\Constraint as Assert; class AddUser { /** * @Assert\NotBlank(message="???????") */ public $username; /** * @Assert\NotBlank(message="????????") */ public $name; /** * @Assert\NotBlank(message="??????") * @Assert\MinLength(limit=4,message="?????") * @Assert\MaxLength(limit=24,message="?????") */ public $password; /** * @Assert\NotBlank(message="??????") */ public $rpassword; /** * @Assert\NotBlank(message="???????") * @Assert\Email(message="???????") */ public $email; /** * @Assert\NotBlank(message="k3????????") */ public $num; /** * @Assert\NotBlank() * @Assert\Choice({"0", "1", "2", "3", "4"}) */ public $roles; public $changePassword; } namespace Topxia\LiftBundle\Form; use Symfony\Component\Form\AbstractType; use Symfony\Component\Form\FormBuilder; class AddUserType extends AbstractType{ public function buildForm(FormBuilder $builder, array $options){ $builder->add('username', 'text', array('label' => '????')); $builder->add('name', 'text', array('label' => '???')); $builder->add('password', 'password', array('label' => '??')); $builder->add('rpassword', 'password', array('label' => '????')); $builder->add('email', 'email', array('label' => '??')); $builder->add('num', 'text', array('label' => 'K3????')); $builder->add('roles', 'choice', array('label' => '???', 'multiple' => false, 'expanded' => true, 'choices' => array( '0' => '?????', '1' => '?????', '2' => '?????', '3' => '???', '4' => '???' ), )); $builder->add('changePassword', 'checkbox', array('label' => '??????', 'value' => '1')); } public function getName(){ return 'add_user'; } } when i use $form-bindRequest($request); in conctollor there is an error : [Semantical Error] The annotation "@Symfony\Component\Validator\Constraint\NotBlank" in property Topxia\LiftBundle\Form\AddUser::$username does not exist, or could not be auto-loaded. 500 Internal Server Error - AnnotationException I have no idea about this. Thanks

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• Problem with std::map and std::pair

  - by Tom

  Hi everyone. I have a small program I want to execute to test something #include <map> #include <iostream> using namespace std; struct _pos{ float xi; float xf; bool operator<(_pos& other){ return this->xi < other.xi; } }; struct _val{ float f; }; int main() { map<_pos,_val> m; struct _pos k1 = {0,10}; struct _pos k2 = {10,15}; struct _val v1 = {5.5}; struct _val v2 = {12.3}; m.insert(std::pair<_pos,_val>(k1,v1)); m.insert(std::pair<_pos,_val>(k2,v2)); return 0; } The problem is that when I try to compile it, I get the following error $ g++ m2.cpp -o mtest In file included from /usr/include/c++/4.4/bits/stl_tree.h:64, from /usr/include/c++/4.4/map:60, from m2.cpp:1: /usr/include/c++/4.4/bits/stl_function.h: In member function ‘bool std::less<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = _pos]’: /usr/include/c++/4.4/bits/stl_tree.h:1170: instantiated from ‘std::pair<typename std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator, bool> std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_M_insert_unique(const _Val&) [with _Key = _pos, _Val = std::pair<const _pos, _val>, _KeyOfValue = std::_Select1st<std::pair<const _pos, _val> >, _Compare = std::less<_pos>, _Alloc = std::allocator<std::pair<const _pos, _val> >]’ /usr/include/c++/4.4/bits/stl_map.h:500: instantiated from ‘std::pair<typename std::_Rb_tree<_Key, std::pair<const _Key, _Tp>, std::_Select1st<std::pair<const _Key, _Tp> >, _Compare, typename _Alloc::rebind<std::pair<const _Key, _Tp> >::other>::iterator, bool> std::map<_Key, _Tp, _Compare, _Alloc>::insert(const std::pair<const _Key, _Tp>&) [with _Key = _pos, _Tp = _val, _Compare = std::less<_pos>, _Alloc = std::allocator<std::pair<const _pos, _val> >]’ m2.cpp:30: instantiated from here /usr/include/c++/4.4/bits/stl_function.h:230: error: no match for ‘operator<’ in ‘__x < __y’ m2.cpp:9: note: candidates are: bool _pos::operator<(_pos&) $ I thought that declaring the operator< on the key would solve the problem, but its still there. What could be wrong? Thanks in advance.

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• Issue with angular gradient algorithm

  - by user146780

  I have an angular gradient algorithm: GLuint OGLENGINEFUNCTIONS::CreateAngularGradient( std::vector<ARGBCOLORF> &input,POINTFLOAT start, POINTFLOAT end, int width, int height ) { std::vector<GLubyte> pdata(width * height * 4); float pi = 3.1415; float cx; float cy; float r1; float r2; float ang; float px; float py; float t; cx = start.x; cy = start.y; r1 = 0; r2 = 500; ang = end.x / 100; ARGBCOLORF color; for (unsigned int i = 0; i < height; i++) { for (unsigned int j = 0; j < width; j++) { px = j; py = i; if( px * px + py * py <= r2 * r2 && px * px + py * py >= r1 * r1 ) { t= atan2(py-cy,px-cx) + ang; t= t+ pi; if (t > 2* pi) { t=t-2*pi; t=t/(2*pi); } } //end + start color.r = (0 * t) + (120 * (1 - t)); color.g = (50 * t) + (255 * (1 - t)); color.b = (0 * t) + (50 * (1 - t)); color.a = (255 * t) + (200 * (1 - t)); pdata[i * 4 * width + j * 4 + 0] = (GLubyte) color.r; pdata[i * 4 * width + j * 4 + 1] = (GLubyte) color.g; pdata[i * 4 * width + j * 4 + 2] = (GLubyte) 12; pdata[i * 4 * width + j * 4 + 3] = (GLubyte) 255; } } It works fine except the ang variable only controls the end sweep, not the start sweep. The start sweep is always facing the middle left as seen here: http://img810.imageshack.us/img810/9623/uhoh.png Basically I have no control over the end one going this <- way. How could I control this one? Thanks

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• Lazy loading the addthis script? (or lazy loading external js content dependent on already fired eve

  - by Keith Bentrup

  I want to have the addthis widget available for my users, but I want to lazy load it so that my page loads as quickly as possible. However, after trying it via a script tag and then via my lazy loading method, it appears to only work via the script tag. In the obfuscated code, I see something that looks like it's dependent on the DOMContentLoaded event (at least for firefox). Since the DOMContentLoaded event has already fired, the widget doesn't render properly. What to do? I could just use a script tag (slower)... or could I fire (in a cross browser way) the DOMContentLoaded (or equivalent) event? I have a feeling this may not be possible b/c I believe that (like jQuery) there are multiple tests of the content ready event, and so multiple simulated events would have to occur. Nonetheless, this is an interesting problem b/c I have seen a couple widgets now assume that you are including their stuff via static script tags. It would be nice if they wrote code that was more useful to developers concerned about speed, but until then, is there a work around?? And/or are any of my assumptions wrong? Edit: Because the 1st answer to the question seemed to miss the point of my problem, I wanted to clarify the situation. This is about a specific problem. I'm not looking for yet another lazy load script or check if some dependencies are loaded script. Specifically this problem deals with external widgets that you do not have control over and may or may not be obfuscated delaying the load of the external widgets until they are needed or at least, til substantially after everything else has been loaded including other deferred elements b/c of the how the widget was written, precludes existing, typical lazy loading paradigms While it's esoteric, I have seen it happen with a couple widgets - where the widget developers assume that you're just willing to throw in another script tag at the bottom of the page. I'm looking to save those 500-1000 ms** though as numerous studies by yahoo, google, and amazon show it to be important to your user's experience. **My testing with hammerhead and personal experience indicates that this will be my savings in this case.

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• How to write this JavaScript code without eval?

  - by karlthorwald

  How to write this JavaScript code without eval? var typeOfString = eval("typeof " + that.modules[modName].varName); if (typeOfString !== "undefined") { doSomething(); } The point is that the name of the var that I want to check for is in a string. Maybe it is simple but I don't know how. Edit: Thank you for the very interesting answers so far. I will follow your suggestions and integrate this into my code and do some testing and report. Could take a while. Edit2: I had another look at the could and maybe itis better I show you a bigger picture. I am greatful for the experts to explain so beautiful, it is better with more code: MYNAMESPACE.Loader = ( function() { function C() { this.modules = {}; this.required = {}; this.waitCount = 0; this.appendUrl = ''; this.docHead = document.getElementsByTagName('head')[0]; } function insert() { var that = this; //insert all script tags to the head now! //loop over all modules: for (var modName in this.required) { if(this.required.hasOwnProperty(modName)){ if (this.required[modName] === 'required') { this.required[modName] = 'loading'; this.waitCount = this.waitCount + 1; this.insertModule(modName); } } } //now poll until everything is loaded or //until timout this.intervalId = 0; var checkFunction = function() { if (that.waitCount === 0) { clearInterval(that.intervalId); that.onSuccess(); return; } for (var modName in that.required) { if(that.required.hasOwnProperty(modName)){ if (that.required[modName] === 'loading') { var typeOfString = eval("typeof " + that.modules[modName].varName); if (typeOfString !== "undefined") { //module is loaded! that.required[modName] = 'ok'; that.waitCount = that.waitCount - 1; if (that.waitCount === 0) { clearInterval(that.intervalId); that.onSuccess(); return; } } } } } }; //execute the function twice a second to check if all is loaded: this.intervalId = setInterval(checkFunction, 500); //further execution will be in checkFunction, //so nothing left to do here } C.prototype.insert = insert; //there are more functions here... return C; }()); var myLoader = new MYNAMESPACE.Loader(); //some more lines here... myLoader.insert();

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• Advice for Architecture Design Logic for software application

  - by Prasad

  Hi, I have a framework of basic to complex set of objects/classes (C++) running into around 500. With some rules and regulations - all these objects can communicate with each other and hence can cover most of the common queries in the domain. My Dream: I want to provide these objects as icons/glyphs (as I learnt recently) on a workspace. All these objects can be dragged/dropped into the workspace. They have to communicate only through their methods(interface) and in addition to few iterative and conditional statements. All these objects are arranged finally to execute a protocol/workflow/dataflow/process. After drawing the flow, the user clicks the Execute/run button. All the user interaction should be multi-touch enabled. The best way to show my dream is : Jeff Han's Multitouch Video. consider Jeff is playing with my objects instead of the google maps. :-) it should be like playing a jigsaw puzzle. Objective: how can I achieve the following while working on this final product: a) the development should be flexible to enable provision for web services b) the development should enable easy web application development c) The development should enable client-server architecture - d) further it should also enable mouse based drag/drop desktop application like Adobe programs etc. I mean to say: I want to economize on investments. Now I list my efforts till now in design : a) Created an Editor (VB) where the user writes (manually) the object / class code b) On Run/Execute, the code is copied into a main() function and passed to interpreter. c) Catch the output and show it in the console. The interpreter can be separated to become a server and the Editor can become the client. This needs lot of standard client-server architecture work. But some how I am not comfortable in the tightness of this system. Without interpreter is there much faster and better embeddable solution to this? - other than writing a special compiler for these objects. Recently learned about AXIS-C++ can help me - looks like - a friend suggested. Is that the way to go ? Here are my questions: (pl. consider me a self taught programmer and NOT my domain) a) From the stage of C++ objects to multi-touch product, how can I make sure I will develop the parallel product/service models as well.? What should be architecture aspects I should consider ? b) What technologies are best suited for this? c) If I am thinking of moving to Cloud Computing, how difficult/ how redundant / how unnecessary my efforts will be ? d) How much time in months would it take to get the first beta ? I take the liberty to ask if any of the experts here are interested in this project, please email me: [email protected] Thank you for any help. Looking forward.

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• jquery block UI malfunction on ajax loading event

  - by Ygam

  problem: trigger errored when block UI is called on this code (function($){ function preloader() { $('a#preloader').click(function(e){ e.preventDefault(); var url = base_url + 'runtest/preloader'; $('div#content').load(url, preloaderCallback); }); } function remotePreload() { $('a#remotepreload').click(function(e){ e.preventDefault(); var object = $(this); object.data('clicked', 'yes'); var url = base_url + 'runtest/remote_preloader'; $('div#content').load(url); }); } /* * callback functions */ function preloaderCallback() { $('div.imageholder img').hide(); $('div.imageholder img').each(function(){ var img = new Image(); var sursa = $(this).attr('src'); var parent = $(this).parent(); var preloaderSource = '<img src="' + base_url + 'media/images/preloader.gif' + '" alt="loader"/>'; parent.append(preloaderSource); $(img).load(function(){ parent.append($(this)); $(this).hide().fadeIn(500); $(this).siblings().remove(); }).attr('src', sursa); }); } function blocker() { $('#content').block(); } function handlePageLoad() { $('a#remotepreload').ajaxStart(function(e){ var elem = $(e.target); if (elem.data('clicked') == 'yes') { // error when blocker() function is called here alert('Started'); } }); $('a#remotepreload').ajaxComplete(function(e){ var elem = $(e.target); if (elem.data('clicked') == 'yes') { elem.removeData('clicked'); alert('Ended'); } }); } // call onready functions $(function(){ preloader(); remotePreload();handlePageLoad(); }); })(jQuery); // here's the error from firefox's debugger uncaught exception: [Exception... "Could not convert JavaScript argument arg 0" nsresult: "0x80570009 (NS_ERROR_XPC_BAD_CONVERT_JS)" location: "JS frame :: http://localhost/testsuite/media/js/jquery.min.js :: anonymous :: line 115" data: no] here's the html markup <div id="wrap"> <div id="header"> <?= $header ?> </div> <div id="content"> <?= $content ?> </div> <div id="sidebar"> <?= $sidebar ?> </div> <div id="footer"> <?= $footer ?> </div> </div> EDIT I was using Jquery 1.4.1 when this happened. Switched back to 1.3 and everything went back to normal.

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• Sorting a text file by date - Date looks like DD/MM/YYYY

  - by John N

  I am trying to sort the dates from the earliest to the latest. I was thinking about using the bufferedreader and do a try searching the first 2 characters of the string and then the 4th and 5th characters and finally the 7th and 8th characters, ignoring the slashes. The following is an example of the text file I have: 04/24/2010 - 2000.0 (Deposit) 09/05/2010 - 20.0 (Fees) 02/30/2007 - 600.0 (Deposit) 06/15/2009 - 200.0 (Fees) 08/23/2010 - 300.0 (Deposit) 06/05/2006 - 500.0 (Fees)

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• current location too slow for view

  - by Christian

  Hi, I make an App with a Map in the App and a button to change to the google.Map-App. The code for my position is: -(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { float avgAccuracy = (newLocation.verticalAccuracy + newLocation.horizontalAccuracy)/2.0; if (avgAccuracy < 500) { [locationManager stopUpdatingLocation]; locationManager.delegate = nil; } storedLocation = [newLocation coordinate]; The code for the view is: - (void)viewDidLoad { [super viewDidLoad]; UIImage *image = [UIImage imageNamed: @"LogoNavBar.png"]; UIImageView *imageview = [[UIImageView alloc] initWithImage: image]; UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithCustomView: imageview]; self.navigationItem.rightBarButtonItem = button; [imageview release]; [button release]; locationManager=[[CLLocationManager alloc] init]; locationManager.delegate = self; locationManager.desiredAccuracy = kCLLocationAccuracyBest; locationManager.distanceFilter = kCLDistanceFilterNone; [locationManager startUpdatingLocation]; mapView.showsUserLocation = YES; NSLog(@"storedLocation-latitude für MKregion: %f", storedLocation.latitude); MKCoordinateRegion region; region.center.latitude = (storedLocation.latitude + 45.58058)/2.0; region.center.longitude = (storedLocation.longitude - 0.546835)/2.0; region.span.latitudeDelta = ABS(storedLocation.latitude - 45.58058); region.span.longitudeDelta = ABS(storedLocation.longitude + 0.546835); [mapView setRegion:region animated:TRUE]; MKCoordinateRegion hotel; hotel.center.latitude = 45.58058; hotel.center.longitude = -0.546835; HotelPositionMarker* marker = [[HotelPositionMarker alloc] initWithCoordinate:hotel.center]; [mapView addAnnotation:marker]; [marker release]; } My problem: when the "viewDidLoad" start, the "storedLocation" is still 0.0000 it takes a bit longer to get the own position than to start the view. The Log for the "storedLocation" in the "viewDidLoad"-section is 0 while the Log of the "storedLocation" in the "-(IBAction)" when the map is visible contains the right values. How can I manage it to have my coordinates before the view load? I need them to center the view concerning the own position and the position given by me. MKCoordinateRegion region; region.center.latitude = (storedLocation.latitude + 45.58058)/2.0; region.center.longitude = (storedLocation.longitude - 0.546835)/2.0; region.span.latitudeDelta = ABS(storedLocation.latitude - 45.58058); region.span.longitudeDelta = ABS(storedLocation.longitude + 0.546835); [mapView setRegion:region animated:TRUE];

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• What are the types and inner workings of a query optimizer?

  - by Frank Developer

  As I understand it, most query optimizers are cost-based. Some can be influenced by hints like FIRST_ROWS(). Others are tailored for OLAP. Is it possible to know more detailed logic about how Informix IDS and SE's optimizers decide what's the best route for processing a query, other than SET EXPLAIN? Is there any documentation which illustrates the ranking of SELECT statements? I would imagine that "SELECT col FROM table WHERE ROWID = n" ranks 1st. What are the rest of them?.. If I'm not mistaking, Informix's ROWID is a SERIAL(INT) which allows for a max. of 2GB nrows, or maybe it uses INT9 for TB's nrows?.. However, I think Oracle uses HEX values for ROWID. Too bad ROWID can't be oftenly used, since a rows ROWID can change. So maybe ROWID is used by the optimizer as a counter? Perhaps, it could be used for implementing the query progress idea I mentioned in my "Begin viewing query results before query completes" question? For some reason, I feel it wouldn't be that difficult to report a query's progress while being processed, perhaps at the expense of some slight overhead, but it would be nice to know ahead of time: A "Google-like" estimate of how many rows meet a query's criteria, display it's progress every 100, 200, 500 or 1,000 rows, give users the ability to cancel it at anytime and start displaying the qualifying rows as they are being put into the current list, while it continues searching?.. This is just one example, perhaps we could think other neat/useful features, the ingridients are more or less there. Perhaps we could fine-tune each query with more granularity than currently available? OLTP queries tend to be mostly static and pre-defined. The "what-if's" are more OLAP, so let's try to add more control and intelligence to it? So, therefore, being able to more precisely control, not "hint-influence" a query is what's needed and therefore it would be necessary to know how the optimizers logic is programmed. We can then have Dynamic SELECT and other statements for specific situations! Maybe even tell IDS to read blocks of indexes nodes at-a-time instead of one-by-one, etc. etc.

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• Trouble binding command in grid menu item.

  - by Pete

  I have a grid that's inside a usercontrol derived class called MediatedUserControl. I'm adding a context menu to let the user delete an item, but I've been unable to figure out how to bind the command to my command property. I'm using MVVM and my viewmodel implements a public ICommand property called DeleteSelectedItemCommand. However, when the view is displayed, I get the following message in the output window: System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='BRO.View.MediatedUserControl', AncestorLevel='1''. BindingExpression:Path=DataContext.DeleteSelectedItemCommand; DataItem=null; target element is 'BarButtonItem' (HashCode=6860584); target property is 'Command' (type 'ICommand') I feel like I generally have a good handle on bindings like this and can't figure out what it is I'm missing here. Thanks for any help you can provide. <dxg:GridControl HorizontalAlignment="Left" Margin="12,88,0,0" x:Name="gridControl1" VerticalAlignment="Top" Height="500" Width="517" DataSource="{Binding ItemList}" BorderBrush="{StaticResource {x:Static SystemColors.ActiveBorderBrushKey}}" ShowBorder="True" Background="{StaticResource {x:Static SystemColors.ControlLightBrushKey}}" UseLayoutRounding="False" DataContext="{Binding}"> <dxg:GridControl.Columns> <dxg:GridColumn FieldName="Code" Header="Code" Width="107" /> <dxg:GridColumn FieldName="Name" Header="Item" Width="173" /> <dxg:GridColumn FieldName="PricePerItem" Header="Unit Price" Width="70"> <dxg:GridColumn.EditSettings> <dxe:TextEditSettings DisplayFormat="N2" /> </dxg:GridColumn.EditSettings> </dxg:GridColumn> <dxg:GridColumn FieldName="Quantity" Header="Qty" Width="50" AllowEditing="True" /> <dxg:GridColumn FieldName="TotalPrice" Header="Total Price" Width="90"> <dxg:GridColumn.EditSettings> <dxe:TextEditSettings DisplayFormat="N2" /> </dxg:GridColumn.EditSettings> </dxg:GridColumn> </dxg:GridControl.Columns> <dxg:GridControl.View> <dxg:TableView ShowIndicator="False" ShowGroupPanel="False" MultiSelectMode="Row" AllowColumnFiltering="False" AllowBestFit="False" AllowFilterEditor="False" AllowEditing="False" AllowGrouping="False" AllowSorting="False" AllowResizing="False" AllowMoving="False" AllowMoveColumnToDropArea="False" AllowDateTimeGroupIntervalMenu="False" > <dxg:TableView.RowCellMenuCustomizations> <dxb:BarButtonItem Name="deleteRowItem" Command="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType=view:MediatedUserControl, AncestorLevel=1}, Path=DataContext.DeleteSelectedItemCommand}"> </dxb:BarButtonItem> </dxg:TableView.RowCellMenuCustomizations> </dxg:TableView> </dxg:GridControl.View>

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• Display multiple new windows

  - by Ricardo Deano

  Afternoon all. I have the following scenario: I have a search page where by a client searches for a product from a drop down list, upon clicking a button, a gridview is produced display the spec. What I would like is the functionality for the user to make their selection and a new window pops up with the spec. So I have a simple code behind for the search page: protected void Button1_Click(object sender, EventArgs e) { Session["Product"] = DropDownList1.SelectedValue; string strScript = "window.open('GridViewPage.aspx', 'Key', 'height=500,width=800,toolbar=no,menubar=no,scrollbars=yes,resizable=yes,titlebar=no');"; ScriptManager.RegisterStartupScript(this, typeof(string), "", strScript, true); } And a gridviewpage that presents the data based upon the session created in the search page: <asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False" DataSourceID="LinqDataSource1"> <Columns> <asp:BoundField DataField="Product" HeaderText="MemberID" SortExpression="MemberID" /> <asp:BoundField DataField="Spec" HeaderText="Spec" SortExpression="Spec" /> </Columns> </asp:GridView> <asp:LinqDataSource ID="LinqDataSource1" runat="server" ContextTypeName="GridViewInNewWindow.ProductDataContext" EntityTypeName="" TableName="tblProducts" Where="Product == @Product"> <WhereParameters> <asp:SessionParameter Name="Product" SessionField="Product" Type="String" /> </WhereParameters> </asp:LinqDataSource> Now upon first iteration, this does the job...gridview presented in new window...hurrah! i.e. a user searches for egg, the spec for an egg is presented in a new window. However, what I would like to happen is that the user can make multiple searches so a number of new windows are opened. i.e. a user searches for egg once, the spec is returned in a new window; they then wish to see the spec for a chicken, so they use the search page to find said chicken, click the button and another new window is shown displaying the chicken's specs. Does anyone know how I can achieve this? Apologies if this is simple stuff, I am just finding my feet.

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• string categorization strategies

  - by Andrew Heath

  I'm the one-man dev team on a fledgling military history website. One aspect of the site is a catalog of ~1,200 individual battles, including the nations & formations (regiments, divisions, etc) which took part. The formation information (as well as the other battle info) was manually imported from a series of books by a 10-man volunteer team. The formations were listed in groups with varying formatting and abbreviation patterns. At the time I set up the data collection forms I couldn't think of a good way to process that data... and elected to store it all as strings in the MySQL database and sort it out later. Well, "later" - as it tends to happen - has arrived. :-) Each battle has 2+ records in the database - one for each nation that participated. Each record has a formations text string listing the formations present as the volunteer chose to add them. Some real examples: 39th Grenadier Rgmt, 26th Volksgrenadier Division 2nd Luftwaffe Field Division, 246th Infantry Division 247th Rifle Division, 255th Tank Brigade 2nd Luftwaffe Field Division, SS Cavalry Division 28th Tank Brigade, 158th Rifle Division, 135th Rifle Division, 81st Tank Brigade, 242nd Tank Brigade 78th Infantry Division 3rd Kure Special Naval Landing Force, Tulagi Seaplane Base personnel 1st Battalion 505th Infantry Regiment The ultimate goal is for each individual force to have an ID, so that its participation can be traced throughout the battle database. Formation hierarchy, such as the final item above 1st Battalion (of the) 505th Infantry Regiment also needs to be preserved. In that case, 1st Battalion and 505th Infantry Regiment would be split, but 1st Battalion would be flagged as belonging to the 505th. In database terms, I think I want to pull the formation field out of the current battle info table and create three new tables: FORMATION [id] [name] FORMATION_HIERARCHY [id] [parent] [child] FORMATION_BATTLE [f_id] [battle_id] It's simple to explain, but complicated to enact. What I'm looking for from the SO community is just some tips on how best to tackle this problem. Ideally there's some sort of method to solving this that I'm not aware of. However, as a last resort, I could always code a classification framework and call my volunteers back to sort through 2,500+ records...

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• How to force VS 2010 to skip "builds" of projects which haven't changed?

  - by Ladislav Mrnka

  Our product's solution has more than 100+ projects (500+ksloc of production code). Most of them are C# projects but we also have few using C++/CLI to bridge communication with native code. Rebuilding the whole solution takes several minutes. That's fine. If I want to rebuilt the solution I expect that it will really take some time. What is not fine is time needed to build solution after full rebuild. Imagine I used full rebuild and know without doing any changes to to the solution I press Build (F6 or Ctrl+Shift+B). Why it takes 35s if there was no change? In output I see that it started "building" of each project - it doesn't perform real build but it does something which consumes significant amount of time. That 35s delay is pain in the ass. Yes I can improve the time by not using build solution but only build project (Shift+F6). If I run build project on particular test project I'm currently working on it will take "only" 8+s. It requires me to run project build on correct project (the test project to ensure dependent tested code is build as well). At least ReSharper test runner correctly recognizes that only this single project must be build and rerunning test usually contains only 8+s compilation. My current coding Kata is: don't touch Ctrl+Shift+B. The test project build will take 8s even if I don't do any changes. The reason why it takes 8s is because it also "builds" dependencies = in my case it "builds" more than 20 projects but I made changes only to unit test or single dependency! I don't want it to touch other projects. Is there a way to simply tell VS to build only projects where some changes were done and projects which are dependent on changed ones (preferably this part as another build option)? I worry you will tell me that it is exactly what VS is doing but in MS way ... I want to improve my TDD experience and reduce the time of compilation (in TDD the compilation can happen twice per minute). To make this even more frustrated I'm working in a team where most of developers used to work on Java projects prior to joining this one. So you can imagine how they are pissed off when they must use VS in contrast to full incremental compilation in Java. I don't require incremental compilation of classes. I expect working incremental compilation of solutions. Especially in product like VS 2010 Ultimate which costs several thousands dollars. I really don't want to get answers like: Make a separate solution Unload projects you don't need etc. I can read those answers here. Those are not acceptable solutions. We're not paying for VS to do such compromises.

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• WCF Service Library - make calls from Console App

  - by inutan

  Hello there, I have a WCF Service Library with netTcpBinding. Its app.config as follows: <configuration> <system.serviceModel> <bindings> <netTcpBinding> <binding name="netTcp" maxBufferPoolSize="50000000" maxReceivedMessageSize="50000000"> <readerQuotas maxDepth="500" maxStringContentLength="50000000" maxArrayLength="50000000" maxBytesPerRead="50000000" maxNameTableCharCount="50000000" /> <security mode="None"></security> </binding> </netTcpBinding> </bindings> <services> <service behaviorConfiguration="ReportingComponentLibrary.TemplateServiceBehavior" name="ReportingComponentLibrary.TemplateReportService"> <endpoint address="TemplateService" binding="netTcpBinding" bindingConfiguration="netTcp" contract="ReportingComponentLibrary.ITemplateService"></endpoint> <endpoint address="ReportService" binding="netTcpBinding" bindingConfiguration="netTcp" contract="ReportingComponentLibrary.IReportService"/> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" ></endpoint> <host> <baseAddresses> <add baseAddress="net.tcp://localhost:8001/TemplateReportService" /> <add baseAddress ="http://localhost:8080/TemplateReportService" /> </baseAddresses> </host> </service> </services> <behaviors> <serviceBehaviors> <behavior name="ReportingComponentLibrary.TemplateServiceBehavior"> <serviceMetadata httpGetEnabled="True"/> <serviceDebug includeExceptionDetailInFaults="True" /> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> </configuration> I want to call it from a console application for testing purpose. I understand that I can call by adding Service Reference or by adding proxy using svcutil. But in both these cases, my service needs to be up and running (I used WCF Test Client) Is there any other way I can call and test service method from console application?

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• How to write JavaScript to a separate window?

  - by George Edison

  I have opened a new window with JavaScript: var newwin = window.open('','preview','width=600,height=500'); Now I want to write some JavaScript to the window: newwin.document.write("<script type='text/javascript'>alert('Hi!');<" + "/script>"); newwin.document.close(); However, the script never gets executed. Am I doing something wrong?

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• XPointers in SVG

  - by Nycto

  I've been trying to get XPointer URIs working in an SVG file, but haven't had any luck so far. After trying something more complicated and failing, I simplified it down to just referencing an ID. However, this still fails. The spec seems pretty clear about this implementation: http://www.w3.org/TR/SVG/struct.html#URIReference I found an example online of what should be a working XPointer reference within an svg document. Here is the Original. Here is the version I copied out: <?xml version="1.0" standalone="no"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg width="500" height="200" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <defs> <rect id="simpleRect" width="100px" height="75px"/> </defs> <use xlink:href="#simpleRect" x="50" y="50" style="fill:red"/> <use xlink:href="#xpointer(id('simpleRect'))" x="250" y="50" style="fill:yellow"/> </svg> This should display two rectangles... one red and one yellow. I tried rendering with Firefox 3.6 and Inkscape 0.47. No success. Only the Red rectangle shows. What am I missing? Thanks for any help you can offer

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• Strange behaviour of NSString in NSView

  - by Mee

  Trying to create a Skat-Game, I encountered the following problem: isBidding is a Boolean value indicationg, the program is in a certain state, [desk selected] is a method calling returning the current selected player, chatStrings consists of dictionaries, saving strings with the player, who typed, and what he typed - (void)drawRect:(NSRect)rect { NSMutableDictionary * attributes = [NSMutableDictionary dictionary]; [attributes setObject:[NSFont fontWithName:playerFont size:playerFontSize] forKey:NSFontAttributeName]; [attributes setObject:playerFontColor forKey:NSForegroundColorAttributeName]; [[NSString stringWithFormat:@"Player %i",[desk selected] + 1]drawInRect:playerStringRect withAttributes:attributes]; if (isBidding) { [attributes setObject:[NSFont fontWithName:chatFont size:chatFontSize] forKey:NSFontAttributeName]; [attributes setObject:chatFontColor forKey:NSForegroundColorAttributeName]; int i; for (i = 0; i < [chatStrings count]; i++, yProgress -= 20) { if (isBidding) [[NSString stringWithFormat:@"Player %i bids: %@",[[[chatStrings objectAtIndex:i]valueForKey:@"Player"]intValue], [[chatStrings objectAtIndex:i]valueForKey:@"String"]] drawAtPoint:NSMakePoint([self bounds].origin.x, yProgress) withAttributes:attributes]; else [[NSString stringWithFormat:@"Player %i: %@",[[[chatStrings objectAtIndex:i]valueForKey:@"Player"]intValue], [[chatStrings objectAtIndex:i]valueForKey:@"String"]] drawAtPoint:NSMakePoint([self bounds].origin.x, yProgress) withAttributes:attributes]; } if (isBidding) [[NSString stringWithFormat:@"Player %i bids: %@",[desk selected] + 1, displayString] drawAtPoint:NSMakePoint([self bounds].origin.x, yProgress) withAttributes:attributes]; else [[NSString stringWithFormat:@"Player %i: %@",[desk selected] + 1, displayString] drawAtPoint:NSMakePoint([self bounds].origin.x, yProgress) withAttributes:attributes]; yProgress = chatFontBegin; } } This is the part determining the string's content, the string is contributed by an [event characters] method. -(void)displayChatString:(NSString *)string { displayString = [displayString stringByAppendingString:string]; [self setNeedsDisplay:YES]; } The problem if have is this: when typing in more than two letters the view displays NSRectSet{{{471, 574},{500, 192}}} and returns no more discription when I try to print it. then I get an EXC_BAD_ACCESS message, though I have not released it (as far as I can see) I also created the string with alloc and init, so I cannot be in the autorelease pool. I also tried to watch the process when it changes with the debugger, but I couldn't find any responsible code. As you can see I am still a beginner in Cocoa (and programming in general), so I would be really happy if somebody would help me with this.

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• Popup browser incompability

  - by Cornelis

  I have a popup with drop down menus on it. I've scaled it down and simplified it for test purposes, but it still doesn't work the way I want/it should. <!DOCTYPE html> <html> <head> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script> <script type="text/javascript"> jQuery(document).ready(function(){ jQuery('.trigger').click(function(){ var picker = jQuery('.popup'); jQuery('<div></div>').css({ height: screen.height, width: screen.width, position: 'absolute', 'z-index': -1, top: picker.offset().top*-1, left: picker.offset().left*-1, border: '1px solid red' }).click(function(){ picker.trigger('focusout'); jQuery(this).hide(); }).prependTo(picker); picker.css('visibility', 'visible'); }); jQuery('.popup').live("focusout", function() { jQuery('.popup').fadeTo(500, 0.0, function() { jQuery('.popup').css('visibility', 'hidden'); jQuery('.popup').css('opacity', '1.0'); }); }); }); </script> </head> <body> <p> <input type=text class=trigger /> <div id=popup-div class=popup style="visibility: hidden; border: 1px solid red"> <select> <option>option1</option> </select> <p>Popup text</p> </div> </p> </body> When you click on the input field, a 'popup' appears, if you click outside the red border it fades away. If you click on the select option it shouldn't dissappear! However on this point, Chrome doesn't work the same as IE/FF/Opera/Safari, and makes the div dissappear. (Using Chrome 4.0.295.0) Does anybody knows a work-around for Chrome? Calling event.stopPropagation() on select elements did not work so far

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• Wait 300ms and then slide down menu using jQuery

  - by Derfder

  I tried this js code: <script type="text/javascript"> $(document).ready( function() { var timer; $('.top-menu-first-ul li').hover(function(){ if(timer) { clearTimeout(timer); timer = null } timer = setTimeout(function() { $(this).find('ul').slideToggle(100); }, 500) }, // mouse out }); }); </script> with this html: <ul class="top-menu-first-ul"> <li> <a href="http://google.com">Google</a> <ul class="top-menu-second-ul"> <li><a href="http://translate.google.com">Google Translate</a></li> <li><a href="http://images.google.com">Google Images</a></li> <li><a href="http://gmail.google.com">Gmail</a></li> <li><a href="http://plus.google.com">Google Plus</a></li> </ul> </li> <li> <a href="http://facebook.com">Facebook</a> </li> <li> <a href="http://twitter.com">Twitter</a> </li> </ul> but it is not working. I would like to show the submenu when hovering over e.g. Google link and other will appear after 300ms. So, I need to prevent loading submenu when the user just quickly hover over it and not stay on hover link for at least 300ms. Then I need to stop executing code (or slide up) when he leaves the link. Because if he go over and back and over and back a copule of times he stop doing hovering anfd the code is still executing itself how many times he had hover over the link. I need somehow prevent this to happen. EDIT: I need to solve this without plugins like hoverIntent etc. if possible, just plain javascript and jQuery

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