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• Face Detection API for Objective-C

  - by Elomar Nascimento dos Santos

  Hello, everybody. Does someone here knows a face detection API for Objective-C? I just want to detect one or more faces inside a photo, so it's not necessary face recognition. I want to build something similar to the iPhoto's feature that puts a square on all faces in a photo. It would be nice if the API can be used on iPhone apps too. Regards.

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• How to avoid the base class member functions getting overridden by sub class in objective - c

  - by Manjunath

  Like in java: A final class cannot be subclassed. This is done for reasons of security and efficiency. Accordingly, many of the Java standard library classes are final, for example java.lang.System and java.lang.String. All methods in a final class are implicitly final. How can I achieve this behavior in objective-c?

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• PayPal Objective-C API?

  - by MegaEduX

  Is there any PayPal Objective-C (Cocoa) API? Or if there's not, is there any way to communicate with PayPal to get like current PayPal balance, etc? Was thinking in doing a mac PayPal app, more for personal use. Thanks in advance.

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• How to post a hyperlink in objective-c?

  - by Alexander

  Hello, How can I post a full hyperlink with its parameters to another link in objective-c? Like: url=http://www.test.de/index.php?param1=23&param2=23&param3=345 Thanks

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• Object pooling in Objective-C

  - by Ranking Stackingblocks

  Is there a nice way to do this in Objective-C, or do I have to write my own tedious logic? I'm creating and destroying a little of little state objects per frame in an iPhone game. It would be nice if I could just reuse objects from a pool.

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• What is the "*" means in Objective C?

  - by Tattat

  sometime I encounter code that have , sometimes have *, can any one expand what is * and ** means in Objective C, thz you. (I used to be a Java programmer, within experience in C/C++)

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• How can i get a list of currently running threads in objective-C(iphone)

  - by krasnyk

  Is there a way to get the list of currently running threads in objective-C? I'm mostly interested in getting the NSThreads objects, cause i want to replace the assertion handler for each running thread? If such thing is not possible, maybe i could set my own selector to be invoked after any thread is spawn(so that i could do the assertion handler replacement over there)?

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• How do I concatenate strings in Objective-C?

  - by Typeoneerror

  Are there any shortcuts to (stringByAppendingString:) string concatenation in Objective-C or shortcuts for working with NSString or other objects in general? e.g. I'd like to make this: NSString *myString = @"This"; NSString *test = [myString stringByAppendingString:@" is just a test"]; something more like this: string myString = "This"; string test = myString + " is just a test";

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• C# equivalent to Objective-C's addSubview

  - by nonamelive

  Hi, Does C# (WinForms) support adding a view or control to another control? Could anyone give me an example? Thanks in advance. I use this code in Objective-C. [aView addSubview:anotherView];

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• How do I call an Objective C function?

  - by riteshkumar1905

  How to call a function in Objective C? For example: I define the function in header (.h file): -(void)abc and implement this function in implementation file (.m file): -(void)abc { //..... ///.... } Now how would I call this function from where I need it?

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• Searchbar attached to top of keyboard in Objective-C

  - by James Testa

  Does anyone know how, in Objective-C on the iPhone, to bring up a keyboard with a search bar connected to the top of the keyboard?

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• Learn C first before learning Objective-C

  - by Lark

  Being an aspiring Apple developer, I want to get the opinions of the community if it is better to learn C first before moving into Objective-C and ultimately the Cocoa Framework? My gut says learn C, which will give me a good foundation.

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• Objective-C optimization

  - by SpecialK

  Are there standard optimization tricks for Objective-C to make for faster execution along the lines of "inlining" frequent methods as in C++ or the "g++ -fast" tag?

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• Objective-C: making documentation

  - by VansFannel

  Hello. I've been developing for Visual Studio and C# for a long time. Now, I'm developing with XCode and Objective-C. On C# I can use /// <summary> to generate documentation. Is there any kind of mechanism like that on XCode to generate documentation? And what kind of comments should I use? Thank you.

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• String search in string array in objective c

  - by BibiBuBu

  Good Day! I want to search a specific string in the array of strings in objective c. Can somebody help me in this regard? Thanks

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• How to covert Date time into Unix timestamp in Objective C/iPhone

  - by sandy

  I would like to covert an NSDate in Unix timestamp in Objective. Please let me know how to do that.

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• Genertate random color hex in Objective-C ?

  - by Nick Brooks

  How do I generate a random color hexadecimal in Objective-C ? I need a color hexdecimal , I don't need a random color. It is complicated ...

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• Utility methods in objective-c

  - by Josh P.

  Where should I place utility methods in objective-c? E.g. additional path handling utility methods which are called by multiple classes. I have seen examples where they are placed in the main appdelegate file and are therefore available to all. This seems a bit weird to me though however...

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• Difference between objective-c and java

  - by sheLa

  i'm experienced with Java and want to learn objective-c to write apps for the iPhone. What are some fundamental differences? (other than syntax)

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• Using a C file in an xcode/objective-c project

  - by Minar

  I am making an iPhone app. I have a code that is in C. The C code contains a lot of pointers and global variables. I want to use this C code in my objective-c project. Can anybody please help me with this?

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• Difference between "+" and "-" before function name in Objective-C

  - by user280556

  Hello Everyone, What is the difference between "+" and "-" before the function name interface declaration in an Objective-C program. Example: - (void)continueSpeaking; (NSArray *)availableVoices; What's the difference?

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• Objective-C Array/List Question

  - by Dave C

  What is the best practice, even in general programming, when you have an undefined, possibly infinite, amount of items that you need in an array but don't have defined bounds. Can you define an endless array in objective c that you can keep pushing items onto, like other lanaguages have a list item. Thanks for any help.

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• I cannot swallow Objective-c syntax, any advice?

  - by Daziplqa

  Hi folks, I know this is a mater of taste, but actually I cannot accept the Objective-c syntax. Any advices so that I can go ahead and learn this language with this freak syntax? Thanks.

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• Objective C - Using .m and .c files?

  - by Mk12

  I know Objective-C is just a superset of C, and you can use plain C anywhere. But am I able to use .m and .c files (for when there is only pure C) in the same project? Or all the errors I'm getting because of something else… Thanks.

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• Send AppleScript to remote computer in Objective-C

  - by Mark Szymanski

  How do you use Objective-C (iPhone) to send an AppleScript to a remote computer (on same network) to be executed? I think something like NSNetService would be of use here, but I don't know. Thanks!

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