automatic-ref-counting

I have a singleton object in iOS that when instantiated parses a CSV file and then holds the results. I would like to make this object universally accessible and I would like it to not be released from memory until the app quits. I am running ARC so I cannot do manual retains. Is there a way I can do this so it will work with ARC? Header File: #import <Foundation/Foundation.h> #import "CHCSV.h" #import "RCParserObject.h" @interface ParserStore : NSObject <CHCSVParserDelegate> { // CSV Variables RCParserObject *item; NSMutableArray *data; NSMutableArray *parsedData; int fields; bool open; }

I have a few questions about ARC (automatic reference counting): CFURLRef url = (__bridge CFURLRef)[NSURL fileURLWithPath:appPath]; //Question 1: Here, I would expect the NSURL object to be autoreleased and //therefore the CFURLRef will also be available for “a while.” Is this correct? url = NULL; //Question 2: Will this cause the NSURL to be released immediately? NSURL *url = [NSURL fileURLWithPath:appPath]; url = nil; //Question 3: Does the “url = nil” result in an immediate release of the NSURL? NSURL *url = [[NSURL alloc] initWithString:@"/something"]; url = nil; //Question 4: What about

I wish to convert an instance of object_setInstanceVariable(self, [key UTF8String], *(id**)addr); to ARC. When I try to use Xcode built-in Objective-C ARC converter I get the following error: 'object_setInstanceVariable' is unavailable: not available in automatic reference counting mode How should I handle this problem? I know I can put --fno-objc-arc as Compiler flag, but I would very much like to use ARC instead, if it's possible (I have a lot of targets that I otherwise would have to manually change the Compiler flag for). (The code is originally taken from NSObject+NSCoding and Archiver by

I'm new to objective C, and I don't know how to create and call a method with out parameters when compiling the code with the new ARC compiler. This is the kind of thing I'm trying to accomplish in non-ARC objective C (this is probably wrong anyway). // // Dummy.m // OutParamTest #import "Dummy.h" @implementation Dummy - (void) foo { NSString* a = nil; [self barOutString:&a]; NSLog(@"%@", a); } - (void) barOutString:(NSString * __autoreleasing *)myString { NSString* foo = [[NSString alloc] initWithString:@"hello"]; *myString = foo; } @end (Edited to match suggestion). I've read the

I have a method createATestObject . As its name indicates, it create an object and return it. The code is very simple and it is under ARC. - (TestObj *)createATestObj { return [[TestObj alloc] init] ; } I assembly the file and get the assembly code below. Lfunc_begin4: .cfi_startproc @ BB#0: push {r7, lr} mov r7, sp sub sp, #8 @DEBUG_VALUE: -[ViewController createATestObj]:self <- undef @DEBUG_VALUE: -[ViewController createATestObj]:_cmd <- undef str r0, [sp, #4] str r1, [sp] movw r0, :lower16:(L_OBJC_CLASSLIST_REFERENCES_$_-(LPC4_0+4)) movt r0, :upper16:(L_OBJC_CLASSLIST_REFERENCES_$_-(LPC4_0

I recently switched from using NSTimer to CVDisplayLink to redraw my OpenGL animation, but i've got a little problem making it work with ARC switched on: /* * This is the renderer output callback function. */ static CVReturn displayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeStamp* now, const CVTimeStamp* outputTime, CVOptionFlags flagsIn, CVOptionFlags* flagsOut, void* displayLinkContext) { // now is the time to render the scene [((__bridge BDOpenGLView*)displayLinkContext) setNeedsDisplay:YES]; // always succeeds, because we don't actually do anything here anyway return