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2014/10/15 ¤U¤È 10:06:42
iphone Programming Glossary: differenceDifference between objectForKey and valueForKey? http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey between objectForKey and valueForKey What is the difference between objectForKey and valueForKey I looked both up in the documentation and they seemed the same..
How do I break down an NSTimeInterval into year, months, days, hours, minutes and seconds on iPhone? http://stackoverflow.com/questions/1237778/how-do-i-break-down-an-nstimeinterval-into-year-months-days-hours-minutes-an options NSUInteger opts Returns as an NSDateComponents object using specified components the difference between two supplied dates . From the API documentation . Create 2 NSDate whose difference is the NSTimeInterval.. the difference between two supplied dates . From the API documentation . Create 2 NSDate whose difference is the NSTimeInterval you want to break down. If your NSTimeInterval comes from comparing 2 NSDate you..
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction the purpose of using IBAction and IBOutlet in Objective C coding for the iPhone does it make any difference if I don't use them iphone objective c interface builder ibaction iboutlet share improve this question..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view multiply the bounds' width and height by the old and new anchorPoint's normalized values take the difference of the two anchorPoints and apply that difference to the position of the layer. You might even be able.. and new anchorPoint's normalized values take the difference of the two anchorPoints and apply that difference to the position of the layer. You might even be able to account for rotation this way by using CGPointApplyAffineTransform..
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata don't trust people on most other forums I thought I'd ask the question here is there any practical difference and if so which one is 'better' I have tried profiling my app using the Object Allocation instrument.. I have tried profiling my app using the Object Allocation instrument and I can't see any practical difference though I have only tried in the simulator and not on an iPhone itself. iphone cocoa touch share improve..
Property Declaration and Automatic Backing Storage Allocation http://stackoverflow.com/questions/3238009/property-declaration-and-automatic-backing-storage-allocation Objective C properties and I have some lingering questions about their syntax. What is the difference between explicitly declaring an ivar for a property like this @interface myObject1 NSObject NSString..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 armv7 and i386 Since Apple's latest changes the Simulator part isn't the same as the arm6 arm7 difference any more it's a different problem see above iphone xcode share improve this question ALTERNATIVES..
Difference between self.ivar and ivar? http://stackoverflow.com/questions/4142177/difference-between-self-ivar-and-ivar @ hello void test2 self.name @ hello Take above as an example. Could someone please explain the difference between name @ hello and self.name @ hello Thanks EDIT Follow up question How to write my own setter..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser http www.raywenderlich.com 553 how to chose the best xml parser for your iphone project The difference between the slowest and fastest parsers in his case was a factor of 2. Depending on your feature requirements..
iPhone different between self and normal variable http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable different between self and normal variable HI all What is difference betwin self.myVariable obj and myVariable obj when i use @propery @synthesize for it iphone objective..
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init between NSMutableArray array vs NSMutableArray alloc init can someone tell me the difference in declare an mutable array with NSMutableArray array NSMutableArray array and NSMutableArray array..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes Now we add a second version of the data model which looks like this Data Model Version 2 The difference is The Event entity is gone and we've got two new ones. One which stores a timestamp as a double and..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature make that an iPod Touch is set to Great Britain with the 12 24 switch set to 12. There's a clear difference in the two results and I judge the category version to be wrong. Note that the log in the category version..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable Now I thought the entire premise behind this strategy is so that one can easily distinguish the difference between an ivar and property. So if I want to use the memory management inherited by a synthesized property..
Objective-C ARC: strong vs retain and weak vs assign http://stackoverflow.com/questions/8927727/objective-c-arc-strong-vs-retain-and-weak-vs-assign strong and weak . Apart from copy which is obviously something completely different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that.. there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which means the program will crash.. weak this won't ever happen because message send to nil won't do anything. I don't know about any differences between strong and retain . Is there any reason why should I use assign and retain in new projects..
Difference between objectForKey and valueForKey? http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey between objectForKey and valueForKey What is the difference between objectForKey and valueForKey I looked both up in the documentation and they seemed the same to me. iphone objective c cocoa nsdictionary key value coding..
How do I break down an NSTimeInterval into year, months, days, hours, minutes and seconds on iPhone? http://stackoverflow.com/questions/1237778/how-do-i-break-down-an-nstimeinterval-into-year-months-days-hours-minutes-an unitFlags fromDate NSDate startingDate toDate NSDate resultDate options NSUInteger opts Returns as an NSDateComponents object using specified components the difference between two supplied dates . From the API documentation . Create 2 NSDate whose difference is the NSTimeInterval you want to break down. If your NSTimeInterval.. as an NSDateComponents object using specified components the difference between two supplied dates . From the API documentation . Create 2 NSDate whose difference is the NSTimeInterval you want to break down. If your NSTimeInterval comes from comparing 2 NSDate you don't need to do this step and you don't even need the NSTimeInterval..
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction and IBAction What is the purpose of using IBAction and IBOutlet in Objective C coding for the iPhone does it make any difference if I don't use them iphone objective c interface builder ibaction iboutlet share improve this question IBAction and IBOutlet are macros defined to denote variables..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view One way I've done this is to grab the layer's bounds multiply the bounds' width and height by the old and new anchorPoint's normalized values take the difference of the two anchorPoints and apply that difference to the position of the layer. You might even be able to account for rotation this way by using CGPointApplyAffineTransform.. bounds multiply the bounds' width and height by the old and new anchorPoint's normalized values take the difference of the two anchorPoints and apply that difference to the position of the layer. You might even be able to account for rotation this way by using CGPointApplyAffineTransform with your UIView's CGAffineTransform...
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata is cached and that this method uses more memory Since I don't trust people on most other forums I thought I'd ask the question here is there any practical difference and if so which one is 'better' I have tried profiling my app using the Object Allocation instrument and I can't see any practical difference though I have only.. any practical difference and if so which one is 'better' I have tried profiling my app using the Object Allocation instrument and I can't see any practical difference though I have only tried in the simulator and not on an iPhone itself. iphone cocoa touch share improve this question It depends on what you're doing with..
Property Declaration and Automatic Backing Storage Allocation http://stackoverflow.com/questions/3238009/property-declaration-and-automatic-backing-storage-allocation and Automatic Backing Storage Allocation I'm trying to understand Objective C properties and I have some lingering questions about their syntax. What is the difference between explicitly declaring an ivar for a property like this @interface myObject1 NSObject NSString title @property copy NSString title @end and this @interface..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 2793392 how do i compile a static library fat for armv6 armv7 and i386 Since Apple's latest changes the Simulator part isn't the same as the arm6 arm7 difference any more it's a different problem see above iphone xcode share improve this question ALTERNATIVES https gist.github.com 3705459 easy copy paste of latest..
Difference between self.ivar and ivar? http://stackoverflow.com/questions/4142177/difference-between-self-ivar-and-ivar name void dealloc name release super dealloc void test1 name @ hello void test2 self.name @ hello Take above as an example. Could someone please explain the difference between name @ hello and self.name @ hello Thanks EDIT Follow up question How to write my own setter for an ivar i.e. self.ivar ... iphone objective c ios share..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser improve this question Best comparison I've seen on the subject http www.raywenderlich.com 553 how to chose the best xml parser for your iphone project The difference between the slowest and fastest parsers in his case was a factor of 2. Depending on your feature requirements there are definitely parsers that can cut your parsing..
iPhone different between self and normal variable http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable different between self and normal variable HI all What is difference betwin self.myVariable obj and myVariable obj when i use @propery @synthesize for it iphone objective c cocoa share improve this question The @synthesize directive..
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init between NSMutableArray array vs NSMutableArray alloc init can someone tell me the difference in declare an mutable array with NSMutableArray array NSMutableArray array and NSMutableArray array NSMutableArray alloc init Because in the beginning I was declaring..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes different values. There we go 2.000 events with an NSDate value. Now we add a second version of the data model which looks like this Data Model Version 2 The difference is The Event entity is gone and we've got two new ones. One which stores a timestamp as a double and the second one which should store a date as NSString . The..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature 2011 07 11 17 44 43.392 DemoApp 160 307 date4 null The phone make that an iPod Touch is set to Great Britain with the 12 24 switch set to 12. There's a clear difference in the two results and I judge the category version to be wrong. Note that the log in the category version IS getting executed and stops placed in the code are..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable myVar @end @implementation MyClass @synthesize myVar _myVar Now I thought the entire premise behind this strategy is so that one can easily distinguish the difference between an ivar and property. So if I want to use the memory management inherited by a synthesized property I'd use something such as myVar @ Foo The other way..
Objective-C ARC: strong vs retain and weak vs assign http://stackoverflow.com/questions/8927727/objective-c-arc-strong-vs-retain-and-weak-vs-assign management attributes for properties introduced by ARC strong and weak . Apart from copy which is obviously something completely different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which.. copy which is obviously something completely different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which means the program will crash when I send a message to the pointer once it's been released... message to the pointer once it's been released. But if I use weak this won't ever happen because message send to nil won't do anything. I don't know about any differences between strong and retain . Is there any reason why should I use assign and retain in new projects or are the kind of being deprecated iphone objective c ios5..
Difference between objectForKey and valueForKey? http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey between objectForKey and valueForKey What is the difference between objectForKey and valueForKey I looked both up in the documentation and they seemed the same to me. iphone objective..
Cocoa: What's the Difference between the frame and the bounds? http://stackoverflow.com/questions/1210047/cocoa-whats-the-difference-between-the-frame-and-the-bounds between the frame and the bounds UIView and its subclasses all have the properties frame and bounds . What's the difference Please don't quote the Apple docs I've already read them and did not understand iphone cocoa touch cocoa uiview share..
How do I break down an NSTimeInterval into year, months, days, hours, minutes and seconds on iPhone? http://stackoverflow.com/questions/1237778/how-do-i-break-down-an-nstimeinterval-into-year-months-days-hours-minutes-an toDate NSDate resultDate options NSUInteger opts Returns as an NSDateComponents object using specified components the difference between two supplied dates . From the API documentation . Create 2 NSDate whose difference is the NSTimeInterval you want.. specified components the difference between two supplied dates . From the API documentation . Create 2 NSDate whose difference is the NSTimeInterval you want to break down. If your NSTimeInterval comes from comparing 2 NSDate you don't need to do..
http://stackoverflow.com/questions/1643007/iboutlet-and-ibaction and IBAction What is the purpose of using IBAction and IBOutlet in Objective C coding for the iPhone does it make any difference if I don't use them iphone objective c interface builder ibaction iboutlet share improve this question IBAction and..
Changing my CALayer's anchorPoint moves the view http://stackoverflow.com/questions/1968017/changing-my-calayers-anchorpoint-moves-the-view the layer's bounds multiply the bounds' width and height by the old and new anchorPoint's normalized values take the difference of the two anchorPoints and apply that difference to the position of the layer. You might even be able to account for rotation.. height by the old and new anchorPoint's normalized values take the difference of the two anchorPoints and apply that difference to the position of the layer. You might even be able to account for rotation this way by using CGPointApplyAffineTransform..
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata more memory Since I don't trust people on most other forums I thought I'd ask the question here is there any practical difference and if so which one is 'better' I have tried profiling my app using the Object Allocation instrument and I can't see any.. one is 'better' I have tried profiling my app using the Object Allocation instrument and I can't see any practical difference though I have only tried in the simulator and not on an iPhone itself. iphone cocoa touch share improve this question..
Property Declaration and Automatic Backing Storage Allocation http://stackoverflow.com/questions/3238009/property-declaration-and-automatic-backing-storage-allocation I'm trying to understand Objective C properties and I have some lingering questions about their syntax. What is the difference between explicitly declaring an ivar for a property like this @interface myObject1 NSObject NSString title @property copy..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 library fat for armv6 armv7 and i386 Since Apple's latest changes the Simulator part isn't the same as the arm6 arm7 difference any more it's a different problem see above iphone xcode share improve this question ALTERNATIVES https gist.github.com..
Difference between self.ivar and ivar? http://stackoverflow.com/questions/4142177/difference-between-self-ivar-and-ivar void test1 name @ hello void test2 self.name @ hello Take above as an example. Could someone please explain the difference between name @ hello and self.name @ hello Thanks EDIT Follow up question How to write my own setter for an ivar i.e. self.ivar..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser I've seen on the subject http www.raywenderlich.com 553 how to chose the best xml parser for your iphone project The difference between the slowest and fastest parsers in his case was a factor of 2. Depending on your feature requirements there are..
iPhone different between self and normal variable http://stackoverflow.com/questions/536388/iphone-different-between-self-and-normal-variable different between self and normal variable HI all What is difference betwin self.myVariable obj and myVariable obj when i use @propery @synthesize for it iphone objective c cocoa share improve..
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init between NSMutableArray array vs NSMutableArray alloc init can someone tell me the difference in declare an mutable array with NSMutableArray array NSMutableArray array and NSMutableArray array NSMutableArray alloc..
Example or explanation of Core Data Migration with multiple passes? http://stackoverflow.com/questions/5995231/example-or-explanation-of-core-data-migration-with-multiple-passes with an NSDate value. Now we add a second version of the data model which looks like this Data Model Version 2 The difference is The Event entity is gone and we've got two new ones. One which stores a timestamp as a double and the second one which..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature date4 null The phone make that an iPod Touch is set to Great Britain with the 12 24 switch set to 12. There's a clear difference in the two results and I judge the category version to be wrong. Note that the log in the category version IS getting executed..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable myVar _myVar Now I thought the entire premise behind this strategy is so that one can easily distinguish the difference between an ivar and property. So if I want to use the memory management inherited by a synthesized property I'd use something..
Objective-C ARC: strong vs retain and weak vs assign http://stackoverflow.com/questions/8927727/objective-c-arc-strong-vs-retain-and-weak-vs-assign introduced by ARC strong and weak . Apart from copy which is obviously something completely different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil.. different are there any differences between strong vs retain and weak vs assign From my understanding the only difference here is that weak will assign nil to the pointer while assign won't which means the program will crash when I send a message.. But if I use weak this won't ever happen because message send to nil won't do anything. I don't know about any differences between strong and retain . Is there any reason why should I use assign and retain in new projects or are the kind of being..
Difference between objectForKey and valueForKey? http://stackoverflow.com/questions/1062183/difference-between-objectforkey-and-valueforkey between objectForKey and valueForKey What is the difference between objectForKey and valueForKey I looked both up in the..
Cocoa: What's the Difference between the frame and the bounds? http://stackoverflow.com/questions/1210047/cocoa-whats-the-difference-between-the-frame-and-the-bounds What's the Difference between the frame and the bounds UIView and its subclasses all have the properties frame and bounds . What's the difference..
Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary? http://stackoverflow.com/questions/1249634/wheres-the-difference-between-setobjectforkey-and-setvalueforkey-in-nsmutab
Difference between NSArray and NSMutableArray http://stackoverflow.com/questions/1345215/difference-between-nsarray-and-nsmutablearray between NSArray and NSMutableArray What is the difference b w NSArray and NSMutableArray i am new to iPhone. iphone nsmutablearray..
Difference between addSubview and insertSubview in UIView class http://stackoverflow.com/questions/1519141/difference-between-addsubview-and-insertsubview-in-uiview-class between addSubview and insertSubview in UIView class What is the difference between addSubview and insertSubView methods..
Difference between [NSThread detachNewThreadSelector:] and -performSelectorInBackground http://stackoverflow.com/questions/2092526/difference-between-nsthread-detachnewthreadselector-and-performselectorinbac between NSThread detachNewThreadSelector and performSelectorInBackground I've been using performSelectorInBackground in..
Difference between @interface declaration and @property declaration http://stackoverflow.com/questions/2159725/difference-between-interface-declaration-and-property-declaration between @interface declaration and @property declaration I'm new to C new to objective C. For an iPhone subclass Im declaring..
Difference between + and - methods in Objective-c http://stackoverflow.com/questions/2238584/difference-between-and-methods-in-objective-c between and methods in Objective c What is the difference between methods that are declared with and methods that are declared..
Difference between class property mVar and instance variable self.mVar http://stackoverflow.com/questions/2278389/difference-between-class-property-mvar-and-instance-variable-self-mvar between class property mVar and instance variable self.mVar I am some what confused as to the difference between accessing..
What's “in” and “out” of OpenGL-ES? (Porting from OpenGL) http://stackoverflow.com/questions/272970/whats-in-and-out-of-opengl-es-porting-from-opengl limit my Q to the iPhone. iphone opengl opengl es porting share improve this question The OpenGL ES 1.1.12 Difference Specification PDF linked to from the OpenGL ES 1.X info page at Khronos.org goes through the differences between OpenGL..
img_data_lock iphone - imageNamed vs imageWithContentsofFile http://stackoverflow.com/questions/2907780/img-data-lock-iphone-imagenamed-vs-imagewithcontentsoffile responsible library is CoreGraphics . I have been reading that the issue relates to cached vs not cached image load Difference between UIImage imageNamed... and UIImage imageWithData... Currently my app loads a series of images via imageNamed replacing..
Difference between [UIImage imageNamed…] and [UIImage imageWithData…]? http://stackoverflow.com/questions/316236/difference-between-uiimage-imagenamed-and-uiimage-imagewithdata between UIImage imageNamed&hellip and UIImage imageWithData&hellip I want to load some images into my application from..
Difference between self.ivar and ivar? http://stackoverflow.com/questions/4142177/difference-between-self-ivar-and-ivar between self.ivar and ivar aclass.h @interface aClass NSObject NSString name @property nonatomic retain IBOutlet NSString..
Difference between iPhone Simulator and Android Emulator http://stackoverflow.com/questions/4544588/difference-between-iphone-simulator-and-android-emulator between iPhone Simulator and Android Emulator What is the difference between iPhone Simulator and Android emulator I have..
Difference between [NSMutableArray array] vs [[NSMutableArray alloc] init] http://stackoverflow.com/questions/5423211/difference-between-nsmutablearray-array-vs-nsmutablearray-alloc-init between NSMutableArray array vs NSMutableArray alloc init can someone tell me the difference in declare an mutable array..
Difference between protocol and delegates? http://stackoverflow.com/questions/5431413/difference-between-protocol-and-delegates between protocol and delegates What is the difference between a protocol and a delegate and how can we declare variables..
Difference between two NSDate objects — Result also a NSDate http://stackoverflow.com/questions/5562594/difference-between-two-nsdate-objects-result-also-a-nsdate between two NSDate objects &mdash Result also a NSDate I have two NSDate objects and I want the difference between the..
iphone+Difference between nil,NIL and null http://stackoverflow.com/questions/5908936/iphonedifference-between-nil-nil-and-null Difference between nil NIL and null I am newbie to iPhone programming I'm just in the learning stage. I want to know the difference..
Difference between Modal and Push segue in storyboards http://stackoverflow.com/questions/9392744/difference-between-modal-and-push-segue-in-storyboards between Modal and Push segue in storyboards Can someone explain to me what is the exact difference between modal and push..
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