I\'m pretty new to C and Objective C, however I can\'t find this answer So I ran into a problem that took me a while to work out, basica开发者_如何转开发lly I was told that when ever you alloc an ob
[[UIImage alloc] initWithContentsOfFile:path] return nil when the method can\'t initialize the image. Then next code is not releasing the allocated UIImage, as image is nil in the [image release] lin
Hope you can help me with this problem. I am having issues with the following code: -(IBAction)swapViews:(id)sender{
I know that I am suppose to use: ObjectClass *tmpObject = [[ObjectClass alloc] init]; realObject = tmpObject;
I have this interface: #import <Foundation/Foundation.h> @interface Cards : NSObject {NSString* effect;NSString* image;}
Given the line below where Square is a subclass of Rectangle: Rectangle *thisObject = [[Square alloc] init];
The StackOverflow question \"using static keyword in objective-c when defining a cached variable\" references code from Example 4 of Xcode\'s TableViewSuite that de开发者_C百科fines a static NSDateFor
Is it necessary to do instantiation for a new string object as the follo开发者_Python百科wing code shows:
- (NSString *)allocString{ NSString *str = [[NSString alloc] init]; return str; } - (void)viewDidLoad{ NSString *name = [self allocString];
It is common practice to write MyClass* obj = [[MyClass alloc] initWithX:X] in Objective-C. initWithX is usually defined as
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