automatic-ref-counting

Actually I am working on a project with ARC enabled. I know using alloc and init is taking ownership of the object. I know, If I create a string like this NSString *myString = [[NSString alloc]initWithFormat:@"Something"]; then I need to release the myString on myself. What If I am using ARC enabled? I cannot release on myself. So will it create a leak? Or should I don't create object like this? I can create a string like below code too. NSString *myString = [NSString stringWithFormat:@"Something"]; But which type I need to use exactly for ARC enabled project ? What will happen if I use first

I am starting to learn how some iOS development at the minute and I currently have the Apress beginning IOS6 book that I am working off. In chapter two there is a simple tutorial to show two buttons and a label and when a button is pressed it is shown on the label which one was pressed. I have completed the tutorial but it has raised one question that I can't find the answer to. The tutorial uses ARC (automatic reference counting) in case that makes a difference. Here is the code, The header file: #import <UIKit/UIKit.h> @interface MTMViewController : UIViewController @property (weak,

I'm followinng tutorial from http://gabriel.github.com/gh-unit/docs/appledoc_include/guide_testing.html . The problem is that my project uses ARC and GHUnit doesn't. I managed previous errors, but now i should do bridged cast, that i've never used, and i'm lost. NSString *string1 = @"a string"; GHAssertNotNULL(string1, nil); //error here Error description: Implicit conversion of Objective-C pointer type 'NSString *' to C pointer type 'const void *' requires a bridged cast. Any help welcome :) joseph.hainline Since you are comparing an NSString, you should use the GHAssertNotNil check. See NULL

I've written some Objective-C application that seems to work fine, except for an ever-growing memory footprint. I'm using ARC under the last version of Xcode 4.6.2. My system is 10.7.5. I'm very new to Objective-C and need some help figuring out what's going on with my memory. I've narrowed down the problem to explaining why the following basic piece of code behaves like it does. This code is added in the vanilla Cocoa-based application template that Xcode gives (ARC enabled). Case A - (void)applicationDidFinishLaunching:(NSNotification *)aNotification{ NSDate* d; for(int i=0; i<1000000; i++){

In swift class type has method deinit() in which we can define that instance of class will be removed from memory. How we can know for struct that it will be removed from memory? For example, struct Vehicle { ... } var v: Vehicle? = Vehicle() v = nil 来源： https://stackoverflow.com/questions/46842577/how-in-swift-to-know-that-struct-is-deleted-from-memory

I am confused with Apple material. In 3 ways we manage the memory, they are : automatic referance counting. manual reference counting. garbage colletion. My doubt is what is the difference between automatic reference counting and manual referance counting. Can someone explain me ? In ARC you don't have to release/autorelease the memory allocated by you where as in case of manual you have to take care of this. e.g. manual case -(void)someMethod { NSMutableArray *arr = [[NSMutableArray alloc] init]; //use array [arr release]; //when array is in no use } ARC case -(void)someMethod {

I'm attempting to convert an iOS (pure Objective-C) project to ARC. The conversion fails at the octest target CreateUniversalBinary stage with the following error. The project and target architecture build settings look correct to me so I am struggling to understand why this is failing: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/lipo: can't figure out the architecture type of: /Users/andybowskill/Library/Developer/Xcode/DerivedData/Make-Up_Kit-axtbxqtkmnlfmlcafkoetwqmeufc/Build/Intermediates/Make-Up Kit.build/Debug-iphoneos/Make-Up KitTests.build

I have a method like this: - (void)processAThing:(id)thing error:(NSError * __autoreleasing *)error { @autoreleasepool { // Start processing. // Find some partway through error.. if (error) { *error = [NSError errorWithDomain...]; return NO; } // More processing. } } This is broken and crashes, because the NSError is autoreleased, and when the return happens, the pool is drained, so the thing that the caller gets is now bogus. I know I could significantly redesign the method so I collect all error cases outside the autorelease block, but I want to understand whether there's a correct way of