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2014/10/15 ¤U¤È 10:13:57
iphone Programming Glossary: setfooWhat programming skills I need to become an iPhone developer? [closed] http://stackoverflow.com/questions/1043820/what-programming-skills-i-need-to-become-an-iphone-developer developers. Dot notation does not mean get or set the ivar of the object. Dot notation means pass the message foo or setFoo to the object. These two statements seem very similar but are in fact radically different. Most importantly foo and self.foo..
iPhone SDK Nonatomic and Atomic http://stackoverflow.com/questions/3623649/iphone-sdk-nonatomic-and-atomic The code for a non atomic retain getter and setter conceptually looks something like id foo return fooIvar void setFoo id newFoo newFoo retain fooIvar release fooIvar newFoo The code for an atomic getter and setter conceptually looks something.. and setter conceptually looks something like this id foo @synchronized self return fooIvar retain autorelease void setFoo id newFoo @synchronized self newFoo retain fooIvar release fooIvar newFoo The implementation details are different notably..
When should I use the ?œself??keyword? http://stackoverflow.com/questions/4080523/when-should-i-use-the-self-keyword by class B . The subclass B adds an property bar and overrode the setter for foo . Now your init method calls setFoo because you used self.foo ... with some initial value. The subclass however also accesses the value of bar in this setter...
iPhone memory management (with specific examples/questions) http://stackoverflow.com/questions/4543895/iphone-memory-management-with-specific-examples-questions set fooArray to be a @property with retain set Objective C will automatically create the following setter right void setFooArray NSMutableArray anArray fooArray release fooArray anArray retain So if I had code like this self.fooArray NSMutableArray.. recreating it by hand each time is tricky. The correct setter for a nonatomic retained property would look like void setFoo NSArray aFoo if foo aFoo return NSArray oldFoo foo foo aFoo retain oldFoo release You are right about the instance variable..
Using NSMutableDictionary as backing store for properties http://stackoverflow.com/questions/5873776/using-nsmutabledictionary-as-backing-store-for-properties synonymous with message syntax the former is exactly the same as foo obj foo and the latter is exactly the same as obj setFoo foo . There is no KVC code to intercept. Properties are at the language level KVC is at the framework level. You'll need.. examining techniques and returns two facts 1 the property name and 2 whether it's a getter foo isFoo or setter setFoo . Then have two more methods one a dynamic getter and the other a dynamic setter. When the selector names a getter add it..
NSString @property, using copy instead of retain http://stackoverflow.com/questions/587414/nsstring-property-using-copy-instead-of-retain the existing data. The synthesized setters essentially look like this For @synthesize nonatomic retain foo void setFoo NSFoo theFoo theFoo retain retain new value foo release release old value if any foo theFoo assign new value For @synthesize.. new value foo release release old value if any foo theFoo assign new value For @synthesize nonatomic copy foo void setFoo NSFoo theFoo NSFoo newFoo theFoo copy make copy foo release release old value if any foo newFoo assign new value Note the..
http://stackoverflow.com/questions/6942439/objectivec-ivars-or-property
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