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Questions tagged [cfstring]

Apple's suite of functions in CoreFoundation for string-handling. Toll-free bridged with NSString

107 questions
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iphone: -[CFString release]: message sent to deallocated instance

an app I'm working on keeps crashing when run on the iPhone but not on the Simulator (although a warning is shown when run without symbolic malloc_error_break, but the app keeps working on the Sim) I'm not manually releasing any string, instead, i…
David Homes
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What Is -[NSURL _fastCharacterContents]:?

So I'm calling this in a method: -(id)initWithContentURL:(NSString *)url { if (self = [super init]) { NSLog(@"xSheetMusicViewController - %@",url); // Casting an NSString object pointer to a CFStringRef: CFStringRef cfString =…
CodaFi
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Instruments CFString (store)

I am running instruments on an app. According to instruments there aren't any leaks detected. However, the category CFString (store) keeps rising. Does anyone know what CFString (store) is? Could this mean I have a leak?
Michael B
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How to cast string to cfstring in C#

I have the following code to convert a String to a CFString and backwarts: string path = @"C:\Users\ayi\Desktop\Failed\AngryBirds.ipa"; IntPtr p_path = __CFStringMakeConstantString(path); CoreFoundation.CFString cfstring = new…
pizixie
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CFStringGetCStringPtr returns NULL on iOS7

I have the following code in my Application: static void foo(CFStringRef str) { CFStringEncoding encoding = CFStringGetSystemEncoding(); const char * cString = CFStringGetCStringPtr(str, encoding); //..... } It's been…
Yoshkebab
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Strange behaviour from CFStringCompareWithOptions

I'm trying to find out exactly how I can match the first n characters of a string with another. Here's some code I've got at the moment: CFStringRef myStringRef = CFSTR("hello"); CFStringRef otherStringRef = CFSTR("helloworld"); CFIndex cmpChars =…
benwad
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Passing a CFStringRef pointer to a C function in MacRuby

I wanted to call the following function from OS X's DVDPlayback framework: OSStatus DVDGetMediaVolumeCFName ( CFStringRef *outDiscVolumeCFName ); Eventually, I came up with the following working code: framework 'DVDPlayback' p2 =…
Sean DeNigris
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Mono C# PInvoke - Get CFString from external lib

I have a lib that returns a CFString, and I'm trying to get that string value in C#.. The problem is that I don't know how to do this in C#.. Making the external function return a CFString won't work as it throws an exception "Type…
BraCa
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How to Iterate through dataframe using f-strings?

Iterate through dataframe using f-strings Imagine you have the following df: d = {'KvK': [0.21, 0.13, 0.1], 'line amount#2': [0.0, 0.05, .05], 'ExclBTW': [0.5, 0.18, .05]} df = pd.DataFrame(data=d) df KvK line amount#2 ExclBTW 0 0.21 …
Max
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How to silence Xcode 4 warning "Semantic Issue: CFString literal contains NUL character"?

I am using something like: illegalCharacters = [[NSCharacterSet characterSetWithCharactersInString:@"\x00\.."] retain]; Xcode 4 displays a warning for it (Semantic issue: CFString literal contains NUL character) Is there any way to fix that? I…
Josh
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large CFString allocations when running under Zombies instrument but not leaks or allocations instrument

I'm in the process of ironing out a few memory allocation issues in my iPad app and have spent a long while watching CFString grow and grow and grow (as a still living object) under the zombies instrument, it wasn't until I switched to the Leaks or…
Matt
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Variable Not a CFString

I am using a database to populate a table view. I created an NSMutable Array of object in the AppDelegate. The Array is populated from the DB as follows: if(sqlite3_open([dbPath UTF8String], &database) == SQLITE_OK) { const char *sql = "select…
Aaron
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How to customize CFString transliteration in Cocoa / Cocoa Touch / Foundation

I am exploring how to use CFStringTransform to transliterate texts in Hebrew and I am stuck with a few inconsistencies in which letters that should be pronounced differently are written in the exact same way or special cases that are not taken into…
catalandres
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'[CFString!]' is not convertible to '[String]'

Before Swift 1.2 I had following array: private let phoneLabels = [ kABPersonPhoneMobileLabel, kABPersonPhoneIPhoneLabel, kABWorkLabel, kABHomeLabel, kABPersonPhoneMainLabel, kABPersonPhoneHomeFAXLabel, …
Shmidt
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What kind of strings does CFStringCreateWithFormat expects as arguments?

The below example should work with Unicode strings but it doesn't. CFStringRef aString = CFSTR("one"); // in real life this is an Unicode string CFStringRef formatString = CFSTR("This is %s example"); // also tried %S but without…
sorin
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