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  • Why is this code's execution speed so different?

    - by Steve Watkins
    In Internet Explorer 7, this code executes consistently in 47 ms: function updateObjectValues() { $('.objects').html(12345678); // ~500 DIVs } however, this code executes consistently in 157 ms: function updateObjectValues() { $('.objects').html('12345678'); // ~500 DIVs } Passing a number is over 3x faster than a string. Why are these results so dramatically different? And, is there any way to help the performance of the string?

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  • Change Titlewindow close button

    - by Cameigons
    I'm working with Flex 3.4 SDK. I need to change the default close button image from a TitleWindow. So what I'm doing is defining a CSS selector, like this: TitleWindow{ close-button-skin: Embed('assets/close.png'); border-color: #FFFFFF; corner-radius: 10; closeButtonDisabledSkin: ClassReference(null); closeButtonDownSkin: ClassReference(null); closeButtonOverSkin: ClassReference(null); closeButtonUpSkin: ClassReference(null); } The problem is: the result image is totally squeezed beyond recognition. Probably because the image dimensions are 55x10 pixels (much wider than the default closebutton square-like dimensions) and flex forces it to fit that size. Would anyone know how to go about fixing that?

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  • Problem referencing querystring using fb:req-choice

    - by vondip
    Hi all, I am building a small facebook application. I am using asp.net and currently working with the fb:req-choice control (tied along with fb:request-form and fb:multi-friend-selector). Problem is, that when I specify the redirect url for when the user clicks my invitation, instead of getting what I specified: http://apps.facebook.com/myApp/forum.aspx?tId=1&ref=app&code=2.74rRNejG7tpAOqgDCNf8qA__.3600.1275202400-106570384737670%7CPi8JpoHDW3xGuq2lxdZl1d4CLUU. This is what I am getting: http://apps.facebook.com/myApp/forum.aspx?tId&code=2.74rRNejG7tpAOqgDCNf8qA__.3600.1275202400-106570384737670%7CPi8JpoHDW3xGuq2lxdZl1d4CLUU. as you can see my query string isn't getting parsed. Instead, only the first parameter is written, why is that? How can I get this right?

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  • Can't resignFirstResponder with UITextView

    - by Calvin L
    I have a UITextView. I implemented a navigationBar UIBarButtonItem to respond to a touch and resign the firstResponder for my UITextView. But, when the selector method is called, the keyboard doesn't get dismissed. I checked the UITextView's responder status with isFirstResponder and it returns YES. I also checked it with canResignFirstResponder and the return value is NO. I must be missing something here...why is it returning NO? I get that I can override canResignFirstResponder by subclassing UITextView, but I'd like to avoid that if possible. Here's a code snippet: - (void) commentCancelButtonTouched:(id)sender { NSLog(@"Cancel button touched"); [self.navigationBar popNavigationItemAnimated: NO]; if ([self.textInput.textView canResignFirstResponder] == NO) { NSLog(@"I don't want to resign!"); } [self.textInput.textView resignFirstResponder]; }

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  • Sometimes UIImageView seems to reject the image taken with iPhone Camera

    - by maxbareis
    Hi, it is very strange, because this error doesn't happen all the time... I have the following code: - (IBAction)getPhoto:(id)sender { UIImagePickerController * picker = [[UIImagePickerController alloc] init]; picker.delegate = self; #if TARGET_IPHONE_SIMULATOR picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; #else picker.sourceType = UIImagePickerControllerSourceTypeCamera; #endif [self presentModalViewController:picker animated:YES]; } with the corresponding delegated selector - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { UIImage *image = [[info objectForKey:@"UIImagePickerControllerOriginalImage"] imageByScalingToSize:CGSizeMake(480, 320)]; [[self imageView] setImage:image]; [picker dismissModalViewControllerAnimated:YES]; } strange thing is, somtimes the image appears in imageView and sometimes not. I have called (gdb) po UIImagePNGRepresentation(image) right after setImage and stuffed the output into a file. The file is a perfect png. Has anyone experienced the same? Has anyone found a solution for it? Thanks in advance Max

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  • Any downsides to UPX-ing my 32-bit Python 2.6.4 development environment EXE/PYD/DLL files?

    - by Malcolm
    Are there any downsides to UPX-ing my 32-bit Python 2.6.4 development environment EXE/PYD/DLL files? The reason I'm asking is that I frequently use a custom PY2EXE script that UPX's copies of these files on every build. Yes, I could get fancy and try to cache UPXed files, but I think a simpler, safer, and higher performance solution would be for me to just UPX my Python 2.6.4 directory once and be done with it. Thoughts? Malcolm

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  • Using MySQL on Visual Studio 2008

    - by Diego
    I am using the ODBC connector to access a MySQL db from visual studio 2008 and i am facing performance problems when dealing with crystal reports and to solve this i need a native connector to visual studio. if someone has had a similar problem and knows a solution or tools ( freeware preferable ) , i would be really grateful.

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  • jQuery - Add click event to Div and go to first link found

    - by LuckyShot
    Hi guys, I think I've been too much time looking at this function and just got stuck trying to figure out the nice clean way to do it. It's a jQuery function that adds a click event to any div with a click CSS class found in the page and when clicked it redirects the user to the first link found in the div. function clickabledivs() { $('.click').each( function (intIndex) { $(this).bind("click", function(){ window.location = $( "#"+$(this).attr('id')+" a:first-child" ).attr('href'); }); } ); } The code simply works although I'm pretty sure there is a fairly better way to accomplish it, specially the selector I am using: $( "#"+$(this).attr('id')+" a:first-child" ) looks too long and slow. Any ideas? Please let me know if you need more details. Thanks! PS: I've got some jQuery benchmarking reference from Project2k.de here: http://blog.projekt2k.de/2010/01/benchmarking-jquery-1-4/

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  • Best way to figure out why didReceiveMemoryWarning is always getting called on a UIViewController

    - by wgpubs
    I have a UIViewController and I'm noticing that I've done something to where the didReceiveMemoryWarning method is getting called every time I run it on an actual device. I've run the project with Run Run With Performance Tool Object Allocations (and Leaks also). There are no leaks but I have no idea how to read or understand the "Object Allocations" data that is displayed. So ... How do I read this information and what is/are the best ways to figure out (and resolve) why this is happening? Thanks

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  • Help Finding Memory Leak

    - by Neal L
    Hi all, I am writing an iPad app that downloads a rather large .csv file and parses the file into objects stored in Core Data. The program keeps crashing, and I've run it along with the Allocations performance tool and can see that it's eating up memory. Nothing is alloc'ed or init'ed in the code, so why am I gobbling up memory? Code at: http://pastie.org/955960 Thanks! -Neal

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  • Integrate with Hawk Monitoring System

    - by Joel Martinez
    Hello, I am looking to integrate an existing product with Hawk (http://www.hawkms.com/), which our application support team uses to keep an eye on operations. I've never used the product so I was wondering if anyone could point me to some resources about how to expose performance data so that it can be monitored with Hawk. Specifically, the technologies we're using is asp.net and wcf ... but resources on other technology stacks would still be useful if they are available. Thanks!

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  • Peformance of f#

    - by Casebash
    What is the performance of f# like in terms of both memory and speed? I am particularly interested in your thoughts about what real world applications are viable. Benchmarks would be particularly relevant.

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  • Read widnows event logs using Enterprise library

    - by Sathish
    I am using Enterprise library 3.1 to log application logs in Windows event logs and i want to read this logs by passing the date parameter. Please note that i will be accessing the remote machine and the performance should be good. Is there any method that can be used to read these logs using Ent Lib... or Please suggest some good method.

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  • CSS :after pseudo element on INPUT field

    - by matra
    Hi, I am trying to use :after CSS pseudo element on INPUT field, but it does not work. If I use it with SPAN, it works OK. <style type="text/css"> .mystyle:after {content:url(smiley.gif);} .mystyle {color:red;} </style> This works (puts the smily after "buu!" and berfore "some more") <span class="mystyle">buuu!</span>a some more This does not work - it only color someValue in red, but there is no smiley. <input class="mystyle" type="text" value="someValue"> What am I doing wrong? should I use another pseudo selector. Note: I can not add SPAN sround my INPUT; because it is being generated by a third party control. Matraj

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  • Importing files in Python from __init__.py

    - by Federico Builes
    Suppose I have the following structure: app/ __init__.py foo/ a.py b.py c.py __init__.py a.py, b.py and c.py share some common imports (logging, os, re, etc). Is it possible to import these three or four common modules from the __init__.py file so I don't have to import them in every one of the files? Edit: My goal is to avoid having to import 5-6 modules in each file and it's not related to performance reasons.

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  • pro/con of having single/multiple action per file in symfony?

    - by koss
    been working with symfony for a while. most tutorials describe having multiple actions in a single php file. however, i find having 1 action per php file easier to maintain. what's the pro/con of both? is this purely a developer preference in code organisation? any performance impact on either approach? what's common practice for reasonably large production applications?

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  • Rails 3.1. Cocoon link_to_add_association example needed

    - by BazZy
    pls show any example of using Cocoon's 'link_to_add_association' with html_options. https://github.com/nathanvda/cocoon Documentation says: html_options: extra html-options (see link_to) There are two extra options that allow to conrol the placement of the new link-data: data-association-insertion-node : the jquery selector of the node data-association-insertion-position : insert the new data before or after the given node. But i can not understand what to do, if i want insert partial just before my "add element" link. Not just after parent's div begin. This not gonna work: <%= link_to_add_association "add element", f, :production_years, :position = "after_all" %

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  • Big O, how do you calculate/approximate it?

    - by Sven
    Most people with a degree in CS will certainly know what Big O stands for. It helps us to measure how (in)efficient an algorithm really is and if you know in what category the problem you are trying to solve lays in you can figure out if it is still possible to squeeze out that little extra performance.* But I'm curious, how do you calculate or approximate the complexity of your algorithms? *: but as they say, don't overdo it, premature optimization is the root of all evil, and optimization without a justified cause should deserve that name as well.

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  • Calling UIGetScreenImage() on manually-spawned thread prints "_NSAutoreleaseNoPool():" message to lo

    - by jtrim
    This is the body of the selector that is specified in NSThread +detachNewThreadSelector:(SEL)aSelector toTarget:(id)aTarget withObject:(id)anArgument NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; while (doIt) { if (doItForSure) { NSLog(@"checking"); doItForSure = NO; (void)gettimeofday(&start, NULL); /* do some stuff */ // the next line prints "_NSAutoreleaseNoPool():" message to the log CGImageRef screenImage = UIGetScreenImage(); /* do some other stuff */ (void)gettimeofday(&end, NULL); elapsed = ((double)(end.tv_sec) + (double)(end.tv_usec) / 1000000) - ((double)(start.tv_sec) + (double)(start.tv_usec) / 1000000); NSLog(@"Time elapsed: %e", elapsed); [pool drain]; } } [pool release]; Even with the autorelease pool present, I get this printed to the log when I call UIGetScreenImage(): 2010-05-03 11:39:04.588 ProjectName[763:5903] *** _NSAutoreleaseNoPool(): Object 0x15a2e0 of class NSCFNumber autoreleased with no pool in place - just leaking Has anyone else seen this with UIGetScreenImage() on a separate thread?

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