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  • Delete/move a UITableView row that's attached to a web service.

    - by Kevin L.
    Deleting or moving rows for a UITableView that is backed with local data (e.g., NSArray) is easy and instantaneous: Remove the value from the array. Call deleteRowsAtIndexPaths:withRowAnimation:. Profit! But my table view communicates with a web service, which means once the "Delete" button on that row gets tapped, I have to forward a request on to the server (via ASIHTTPRequest, of course), get the response, and then tell the table view to run its little delete-row animation, all with a few seconds of latency in between. From a high-level, what's the best way to do that? Throw some callback selector into ASIHTTPRequest's userInfo dictionary? KVO? Bonus points for some nice UI touch, like some kind of spinner on the soon-to-be-deleted cell.

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  • How to select parent object of a hyperlink whose href match the requested page/file name using jQuer

    - by ARS
    How to select parent object of a hyperlink whose href match the requested page/file name using jQuery? I have following code <div> <div class="menu-head"> <a href="empdet.aspx">employees</a> <a href="custdet.aspx">customers</a> </div> <div class="menu-head"> <a href="depdet.aspx">departments</a> </div> <div> I want a Jquery to change the color of the parent div corresponding a hyperlink. If the user is browsing custdet.aspx the respective parent div background should be changed to red. Edit: I have a method to retrieve the file name. I just need the right selector to select the parent.

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  • Heap Behavior in C++

    - by wowus
    Is there anything wrong with the optimization of overloading the global operator new to round up all allocations to the next power of two? Theoretically, this would lower fragmentation at the cost of higher worst-case memory consumption, but does the OS already have redundant behavior with this technique, or does it do its best to conserve memory? Basically, given that memory usage isn't as much of an issue as performance, should I do this?

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  • How to use various selectors in SIFR 3r436

    - by reg3n
    Hi, i'm using this sIFR.replace(neutra, { selector: '#nav li', css:[ 'a { color: #ffffff; text-decoration:none; font-size:14px} a:hover { color: #d75a60; text-decoration:underline;}'], wmode: 'transparent', preventWrap: true ,forceWidth: true ,fitExactly: true ,forceSingleLine: true ,offsetTop: 0 ,offsetLeft: 0 ,tuneWidth: 0 ,tuneHeight: 0, }); and i need to style a b inside a span inside a div ... and i just can't find the way, if i add another sIFR.replace(blah... it won't work, it messes with the other replacement sometimes :S any good reference? thanks in advance.

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  • Setting UITableViewCell height is expensive

    - by Sheehan Alam
    I am doing a comparison in - (CGFloat)tableView:(UITableView *)tblView heightForRowAtIndexPath:(NSIndexPath *)indexPath It seems like performance of my app really slows down when I check if a cell.detailTextLabel.text isEqualTo:@"None"; What is a better way of doing the comparison and setting the cell height?

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  • What javascript templating engine do you recommend?

    - by flybywire
    Do you have experience with a Javascript templating engine, one that is stable, easy to use and has good performance? I need to do apply the same template many times for different data. I prefer to download the template itself once (and have it cached) rather than processing the template on the server. Also, this way the template itself would be a static resource more easily cached in the server side too.

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  • Problem in creating another thread

    - by Avinash
    Hi, I am using NSThread to create different thread and displaying images in my application on a new thread instead of main thread. On main thread i am working with a table view which is displaying data from XML file, In the same view I am displaying images below. But, displaying images on new thread is not working properly. Did i made any mistake in creating Here below is my code. Please help me its urgent. Thanks in advance...................... - (void)viewDidLoad { [super viewDidLoad]; [NSThread detachNewThreadSelector:@selector(startTheBackgroundJob) toTarget:self withObject:nil]; } - (void)startTheBackgroundJob { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; currentLocationImageView = [[UIImageView alloc] init]; NSArray *images = [NSArray arrayWithObjects:img1, img2, nil]; [currentLocationImageView setAnimationImages:images]; [currentLocationImageView setAnimationRepeatCount:0]; [currentLocationImageView setAnimationDuration:5.0]; [self.view addSubview:currentLocationImageView]; [pool release]; }

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  • UIViewController: setToolbarItems vs navigationItem

    - by Paul Sanwald
    my application has a UIViewController subclass which is being managed by a UINavigationController. In the viewDidLoad of my UIViewController subclass, I was attempting to add a UIBarButtonItem to the toolbar like this: settingsButton = [[UIBarButtonItem alloc] initWithTitle:@"Settings" style:UIBarButtonItemStylePlain target:self action:@selector(viewSettings:)]; [self setToolbarItems:[NSArray arrayWithObject:settingsButton]]; this wasn't working out for me, so after some googling around, I tried this: [[self navigationItem] setRightBarButtonItem:settingsButton]; which worked out fine. from reading the UIViewController documentation, I'm still confused about why setToolbarItems wasn't working. I verified in the debugger that the button was in the toolbarItems array in the viewDidAppear method. the button itself just wasn't appearing on my toolbar. so, my question is, why didn't setToolbarItems work for me in the first code snippet? I don't have the toolbar configured in my xib for this view controller at all, if that makes a difference.

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  • Javascript: move the "view point" of the browser

    - by ArchJ
    I have a page with many out-of-bounds contents and since I set body{overflow:hidden}, they are not outside the viewport. So I want to attach a function to a button which would move the PoV of the browser so that the out-of-bounds contents would come into the viewport. What I can think of now is to set body{position:relative} and use jQuery to animate() the body instead. But in terms of performance, is there a better way to achieve that?

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  • .NET 4.0 slower than earlier versions, is that true?

    - by Nauman
    Hello All, We are planning to move to .NET framework 4.0 sometime soon... I don't remember the refernce or link, but recently, I read about the latest framework being a little slow in performance when compared to its predecessors. Is that true? has anybody done any tests or have some valid arguments to support this?

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  • Zend_Search_Lucene vs SOLR

    - by spacemonkey
    Hi, I have recenlty stumbled into Zend Lucene port of Lucene project. I have a little bit experience with SOLR so I would like to know what is the difference between two of them especially from performance and installation side. As much as I know SOLR requires Tomcat serverlet running in web hosting in order to work, what about Zend Lucene library? I am also a bit confused what means "being implemented on the top of Lucene"?

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  • So where is this calling super?

    - by dontWatchMyProfile
    From the Core Data docs: Inheritance If you have two subclasses of NSManagedObject where the parent class implements a dynamic property and its subclass (the grandchild of NSManagedObject) overrides the methods for the property, those overrides cannot call super. @interface Parent : NSManagedObject @property(nonatomic, retain) NSString* parentString; @end @implementation Parent @dynamic parentString; @end @interface Child : Parent @end @implementation Child - (NSString *)parentString { // this throws a "selector not found" exception return parentString.foo; } @end very, very funny, because: I see nobody calling super. Or are they? Wait... parentString.foo results in ... a crash ??? it's a string. How can that thing have a .foo suffixed to it? Just another documentation bug?

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  • where should I do the calculating stuff,PHP or Mysql?

    - by SpawnCxy
    I've been doing a lot of calculating stuff nowadays.Usually I prefer to do this job in PHP rather than Mysql though I know PHP is not good at this cuz I thought mysql may be worse.But I found some performance problem :some pages were loaded so slowly that 30 seconds' timelimit is not enough for them!So I wonder which is the better practice to do the calculations,and any princles for that?Suggestions would be appreciated.

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  • Any Javascript optimization benchmarks?

    - by int3
    I watched Nicholas Zakas' talk, Speed up your Javascript, with some interest. I liked how he benchmarked the various performance improvements created by various optimization techniques, e.g. reducing calls to deeply nested objects, changing loops to count down instead of up, etc. I would like to run these benchmarks myself though, to see exactly how our current browsers are faring. I guess it wouldn't be too difficult to cook up some timed loops, but I'd like to know if there are any existing implementations out there.

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  • Change backgroundcolor for UIButton IPhone

    - by lightwave
    I have a problem. I use a Button as a BarButtonItem. It works fine so far, but my backgroundcolor works only if I click on my button. How can I make it so that my backgroundcolor will be set every time ? UIButton *redEmergencyButton = [[UIButton buttonWithType:UIButtonTypeRoundedRect] retain]; redEmergencyButton.frame = CGRectMake(100, 100, 100, 50); redEmergencyButton.backgroundColor = [UIColor colorWithRed:0.8 green:0.898039215686274509803 blue:1.0 alpha:1.0]; [redEmergencyButton setTitle:@"Emergency" forState:UIControlStateNormal]; [redEmergencyButton addTarget:self action:@selector(doEmergency) forControlEvents:UIControlEventTouchUpInside]; UIBarButtonItem *rButton = [[UIBarButtonItem alloc] initWithCustomView:redEmergencyButton];

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  • Using Int32 or what you need

    - by Sir Psycho
    Should you use Int32 in places where you know the value is not going to be higher than 32,767? I'd like to keep memory down, hoever, using casts everywhere just to perform simple arithmetic is getting annoying. short a = 1; short result = a + 1; // Error short result = (short)(a + 1); // works but looks ugly when does lots of times What would be better for overall application performance?

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  • Map wont show rigth in Joomla

    - by user1653126
    I have the following code of a map using api google, I have tested the code in several html editor and its work perfectly, but when i upload in my web page doesn’t work. The map appears all zoomed in some random point in the ocean. I create an article in Joomla 1.5.20, paste the code. Its shows right in the preview but not in the web page. I disable filtering and use none editor and still won’t work. Thanks for the help. <!DOCTYPE html> <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> <style type="text/css"> html { height: 100% } body { height: 100%; margin: 0; padding: 0 } #map_canvas { height: 100% } </style> <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?key=AIzaSyBInlv7FuwtKGhzBP0oISDoB2Iu79HNrPU&sensor=false"> </script> <script type="text/javascript"> var map; // lets define some vars to make things easier later var kml = { a: { name: "Productor", url: "https://maps.google.hn/maps/ms?authuser=0&vps=2&hl=es&ie=UTF8&msa=0&output=kml&msid=200984447026903306654.0004c934a224eca7c3ad4" }, b: { name: "A&S", url: "https://maps.google.hn/maps/ms?ie=UTF8&authuser=0&msa=0&output=kml&msid=200984447026903306654.0004c94bac74cf2304c71" } // keep adding more if ye like }; // initialize our goo function initializeMap() { var options = { center: new google.maps.LatLng(13.324182,-87.080071), zoom: 9, mapTypeId: google.maps.MapTypeId.TERRAIN } map = new google.maps.Map(document.getElementById("map_canvas"), options); var ctaLayer = new google.maps.KmlLayer('https://maps.google.hn/maps/ms?authuser=0&vps=5&hl=es&ie=UTF8&oe=UTF8&msa=0&output=kml&msid=200984447026903306654.0004c94bc3bce6f638aa1'); ctaLayer.setMap(map); var ctaLayer = new google.maps.KmlLayer('https://maps.google.hn/maps/ms?authuser=0&vps=2&ie=UTF8&msa=0&output=kml&msid=200984447026903306654.0004c94ec7e838242b67d'); ctaLayer.setMap(map); createTogglers(); }; google.maps.event.addDomListener(window, 'load', initializeMap); // the important function... kml[id].xxxxx refers back to the top function toggleKML(checked, id) { if (checked) { var layer = new google.maps.KmlLayer(kml[id].url, { preserveViewport: true, suppressInfoWindows: true }); google.maps.event.addListener(layer, 'click', function(kmlEvent) { var text = kmlEvent.featureData.description; showInContentWindow(text); }); function showInContentWindow(text) { var sidediv = document.getElementById('content_window'); sidediv.innerHTML = text; } // store kml as obj kml[id].obj = layer; kml[id].obj.setMap(map); } else { kml[id].obj.setMap(null); delete kml[id].obj; } }; // create the controls dynamically because it's easier, really function createTogglers() { var html = "<form><ul>"; for (var prop in kml) { html += "<li id=\"selector-" + prop + "\"><input type='checkbox' id='" + prop + "'" + " onclick='highlight(this,\"selector-" + prop + "\"); toggleKML(this.checked, this.id)' \/>" + kml[prop].name + "<\/li>"; } html += "<li class='control'><a href='#' onclick='removeAll();return false;'>" + "Limpiar el Mapa<\/a><\/li>" + "<\/ul><\/form>"; document.getElementById("toggle_box").innerHTML = html; }; // easy way to remove all objects function removeAll() { for (var prop in kml) { if (kml[prop].obj) { kml[prop].obj.setMap(null); delete kml[prop].obj; } } }; // Append Class on Select function highlight(box, listitem) { var selected = 'selected'; var normal = 'normal'; document.getElementById(listitem).className = (box.checked ? selected: normal); }; </script> <style type="text/css"> .selected { font-weight: bold; } </style> </head> <body> <div id="map_canvas" style="width: 80%; height: 400px; float:left"></div> <div id="toggle_box" style="position: absolute; top: 100px; right: 640px; padding: 10px; background: #fff; z-index: 5; "></div> <div id="content_window" style="width:10%; height:10%; float:left"></div> </body> </html>

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  • How to change executable icon from c# code? (not my app icon)

    - by flyout
    How can I change *.EXEs icons from c# code (not my main app icon but from that app i want to change the icon of another exe). I eventually would have to change the icons for A LOT of files so I am looking for a fast and good performance way to do it. I have been googling for 30min but all I found is how to set the icon for the app in VS.

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