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  • memory management objective c - returning objects from methods

    - by geeth
    Hi, Please clarify, how to deal with returned objects from methods? Below, I get employee details from GeEmployeetData function with autorelease, 1. Do I have to retain the returned object in Process method? 2. Can I release *emp in Process fucntion? -(void) Process { Employee *emp = [self GeEmployeetData] } +(Employee*) GeEmployeetData{ Employee *emp = [[Employee alloc]init]; //fill entity return [emp autorelease]; }

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  • General question about Ruby Eigenclass/Singleton

    - by Dex
    module MyModule def my_method; 'hello'; end end class MyClass class << self include MyModule end end MyClass.my_method # => "hello I'm unsure why "include MyModule" needs to be in the eigenclass in order to be called using just MyClass. Why can't I go: X = MyClass.new X.my_method How is this type of pattern useful if I can't call it from an instance?

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  • core plot error?

    - by senthilmuthu
    hi, i am using core plot framework,when i run following code in viewdidload gives crash.the view is as custom view... graph = [(CPXYGraph *)[CPXYGraph alloc] initWithFrame:CGRectZero]; CPLayerHostingView *hostingView = (CPLayerHostingView *)self.view; hostingView.hostedLayer = graph;**(gives error)** what i have to do? any help please?

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  • Error found - too many arguments to method call expected 1 have 2 - in app email

    - by Anthony Farah
    There seems to be an error with my coding, and it says that there are to many nils or something I need help MFMailComposeViewController *composer = [[MFMailComposeViewController alloc]init]; if ([MFMailComposeViewController canSendMail]) { [composer setToRecipients:[NSArray arrayWithObject:@"[email protected]", nil]]; [composer setSubject:nil];[composer setMailComposeDelegate:self]; [composer setMessageBody:nil isHTML:YES]; [composer setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal];

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  • load the videos in ipod/iphone library but always crash

    - by user262325
    Hello everyone I hope to load the videos in ipod/iphone library and list in UITableView like app 'videos'. the codes show below, but it always cause crash UIImagePickerController *picker=[[UIImagePickerController alloc]init]; picker.sourceType= UIImagePickerControllerSourceTypePhotoLibrary; picker.mediaTypes = [NSArray arrayWithObject:kUTTypeMovie]; picker.delegate = self; Welcome any comment Thanks interdeb

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  • UIScrollview disable transparency

    - by Frank
    It seems that UIScrollview has a transparency set by default. I have a background image set as a subview in self.view. but the image is showing on my scrollview that's also on the subview layer. I want it to cover up the background image so the scrollview transparency is disable.

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  • Using Yahoo local search query for iPhone

    - by robbmcmahan
    I'm using yahoo local search in an iPhone app and trying to query everything in a certain location. According to the api docs you can pass "*" to query and it will return everything. I've tried passing it several different ways, including the way below but it does not work unless I actually pass it a real query. Does anyone know how or what I need to pass to make it query everything? [self setQuery:[@"*" stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding]]; Thanks

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  • Iphone release problem

    - by xger86x
    Hi, i have the following code in a .h @property (nonatomic, copy) NSString *username; Then, username is assigned in this way when the user enter text in a TextField: self.username = textField.text; And then, in dealloc method i call release: NSLog(@"%d",[username retainCount]); [username release]; NSLog(@"%d",[username retainCount]); But in the console it prints: 2011-01-11 23:09:52.468 IApp[2527:307] 1 2011-01-11 23:09:52.480 IApp[2527:307] 1 What is the problem? Thanks

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  • Program to change/obfuscate all hashes (MD5/SHA1) in a directory tree?

    - by anon
    Hi fellas, A) Are there any FOSS programs out there that can manage to hashchange all files in a directory tree? B) Failing that, what methods could be used to develop this capability in a (crappy) self-written program without requiring the program to be sophisticated and content-aware? Is there any (roughly) universally safe location within a file (for example, around EOF?) where on could one simply append/add psuedorandom data so the resulting hash is different? Is there a better/more elegant solution? Muchos gracias

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  • Skipp default parameters in Delphi

    - by Vijay Bobba
    Hi Is there any way to skip the default params, say suppose my method declaration is like this: procedure Myfunc1(var isAttr1: Boolean = FALSE; isAttr2: Boolean = FALSE; isAttr3: Boolean = FALSE); I can't call the function like this: Self.Myfunc1( , , Attr3); because I don't want unnecessary var declarations, at the same time I want the last param return value (it is a var type) Thank for help in advance

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  • iPhone - Track three touches

    - by Striker
    Suppose you have three points of contact on the iPhone screen and one of those touches moves... The touchesMoved method will be invoked and the [[event touchesForView:self] count] will be equal to '3' because there are three touches for the event, but how can you distinguish between the touches? For example - find out whether it was the first, second, or third touch which moved? Thanks.

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  • Find the end/finish coordinates you a UISwipeGestureRecognizer

    - by Code
    I can find the start coordinates of where a swipe starts by doing the following - (void)oneFingerSwipeUp:(UISwipeGestureRecognizer *)recognizer { CGPoint point = [recognizer locationInView:[self view]]; NSLog(@"Swipe up - start location: %f,%f", point.x, point.y); } Is it possible to find the coordinates where the swipe ended? I looked into the docs and its not mentioned. Is there some work around for this? Many Thanks, -Code

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  • Add custom method to string object [closed]

    - by cru3l
    Possible Duplicate: Can I add custom methods/attributes to built-in Python types? In Ruby you can override any built-in object class with custom method, like this: class String def sayHello return self+" is saying hello!" end end puts 'JOHN'.downcase.sayHello # >>> 'john is saying hello!' How can i do that in python? Is there a normally way or just hacks?

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  • Django1.1 file based session backend multi-threaded solution

    - by Satoru.Logic
    Hi, all. I read django.contrib.sessions.backend.file today, in the save method of SessionStore there is something as the following that's used to achieve multi-threaded saving integrity: output_file_fd, output_file_name = tempfile.mkstemp(dir=dir, prefix=prefix + '_out_') renamed = False try: try: os.write(output_file_fd, self.encode(session_data)) finally: os.close(output_file_fd) os.rename(output_file_name, session_file_name) renamed = True finally: if not renamed: os.unlink(output_file_name) I don't quite understand how this solve the integrity problem.

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  • Upload an image from JSON with rails

    - by Dougui
    I have an application created with PhoneGap and Backbone. I upload a file as JSon and my server receive data like this : data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/... I'm trying to write the file like this : File.open("#{Rails.root}/public/images/#{self.id}.jpg", "w+") do |f| f.write(data) end It's not working and I don't know what to do. When I'm trying to open the file I have this message "Not a JPEG file: starts with 0x64 0x61". Do you have a solution?

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  • Would a pointer to a pointer to nil match against NULL?

    - by dontWatchMyProfile
    Example: A validation method contains this check to see if an NSError object shall be created or not: - (BOOL)validateCompanyName:(NSString *)newName error:(NSError **)outError { if (outError != NULL) { // do it... Now I pass an NSError object, like this: NSError *error = nil; BOOL ok = [self validateCompanyName:@"Apple" error:&error]; I'm not sure if this matches the check for not NULL. I think it's not NULL, since I believe NULL is not nil. Maybe someone can clear this up?

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  • dismissing uiwebview

    - by chimgrrl
    Ok, I really spend 2 days on this and it has gotten me stumped. From my main UIViewController I called a WebViewController which is a UIViewController with a UIWebView inside: UOLCategoriesWebViewController *ucwvcontroller = [[UOLCategoriesWebViewController alloc] initWithNibName:@"UOLCategoriesWebViewController" bundle:nil]; [self presentModalViewController:ucwvcontroller animated:YES]; [ucwvcontroller release]; Inside the UOLCategoriesWebViewController I've call the delegate method shouldStartLoadWithRequest where when the user clicks on a particular type of link it parses out the params and return back to the main UIViewController (or at least that's what I want it to do): - (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType { BOOL continueOrExit = YES; NSURL *url = request.URL; NSString *urlString = [url relativeString]; NSString *urlParams = [url query]; NSArray *urlParamArr = [urlParams componentsSeparatedByString:@"&"]; NSLog(@"the url is: %@",urlString); //NSLog(@"the params are: %@,%@",[urlParamArr objectAtIndex:0],[urlParamArr objectAtIndex:1]); //BOOL endTrain1 = [[urlParamArr objectAtIndex:1] hasPrefix:@"subCatValue"]; //BOOL endTrain2 = ([urlParamArr objectAtIndex:1 //NSLog(@"Number of elements: %@",[urlParamArr count]); if (navigationType == UIWebViewNavigationTypeLinkClicked) { //NSLog(@"Enter into His glory"); if ([urlString hasSuffix:@"categories_list.php"]) { //NSLog(@"2nd Heaven"); continueOrExit = YES; }else if ([[urlParamArr objectAtIndex:1] hasPrefix:@"subCatValue"]) { continueOrExit = NO; NSLog(@"end of the train"); NSArray *firstParamStringArr = [[urlParamArr objectAtIndex:0] componentsSeparatedByString:@"="]; NSArray *secondParamStringArr = [[urlParamArr objectAtIndex:1] componentsSeparatedByString:@"="]; NSString *catSelected = [firstParamStringArr objectAtIndex:1]; NSString *subCatSelected = [secondParamStringArr objectAtIndex:1]; //go back to native app [self goBackToMain:catSelected andSubCat:subCatSelected]; } } return continueOrExit; } Actually in the above function where I am calling the goBackToMain method I want it to call the delegate method and return to the mainviewcontroller. Unfortunately after executing that goBackToMain method it goes back to this method and continue to return continueOrExit. Is there anyway to make it truly exit without returning anything? I've tried putting in multiple returns to no avail. Or can I in the html page pass some javascript to directly call this method so that I don't have to go through this delegate method? Thanks for the help in advance!

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