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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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• 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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• 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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• 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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• 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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• IDE for Objective C

  - by voidone

  What are the IDE's or development tools best suited for projects involving Objective C, C and C++? Is there a common IDE which would support all the three languages.

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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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• How to split a string of words and add to an array - Objective C

  - by user1412469

  Let's say I have this: NSString *str = @"This is a sample string"; How will I split the string in a way that each word will be added into a NSMutableArray? In VB.net you can do this: Dim str As String Dim strArr() As String Dim count As Integer str = "vb.net split test" strArr = str.Split(" ") For count = 0 To strArr.Length - 1 MsgBox(strArr(count)) Next So how to do this in Objective-C? Thanks

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• Weird Objective-C Mod Behavior

  - by coneybeare

  So I thought that negative numbers, when mod'ed should be put into positive space... I cant get this to happen in objective-c I expect this: -1 % 3 = 2 0 % 3 = 0 1 % 3 = 1 2 % 3 = 2 But get this -1 % 3 = -1 0 % 3 = 0 1 % 3 = 1 2 % 3 = 2 Why is this and is there a workaround?

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• How can I make a static method in Objective C??I

  - by Tattat

  In Java, I may have a class, for example, "utility" ....., and I have a static method called "changeToCapitalLetter", so , I can do something like this: Utility.changeToCapitalLetter(String myString); How can I do the similar thing in Objective C? thz a lot.

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• non reference-counting dictionary in objective-c

  - by Colin

  Is there any 'easy' way of having pure objective-c containers, such as NSMutableDictionary or CFMutableDictionary, that don't increment the reference count of added objects, without using the c++ standard library?

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