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) (int) = ^ (int a) {return OutA + A;}; OutA = 5; int result = MYPTR (3); The value of result is 8 because Outa is a variable of type static NSLog (@ "result=%d", result); } You can even modify the value of the Outa directly inside the block, such as the following:[CPP]View Plaincopy { static int outA = 8; Int (^myptr) (int) = ^ (int a) {OutA = 5; return OutA + A;}; int result = MYPTR (3); The value of result is 8 because Outa is a variable of type

iOS app is very focused on user experience, not only requires the interface design is reasonable and beautiful, but also requires a variety of UI responsiveness, I believe we are the kind of a drag on Kaka TableView application is not a good impression. Remember 12306, that speed, I believe we can not stand it.In order to improve the speed of iOS, I would like to introduce some of the methods I have practic

1. Concepts of classes, objects, and methodsA class is a unique representation of an object, each containing its own private information, by altering and providing access to that data.Therefore, OBJECTIVE-C uses a specific syntax to apply methods to classes and instances:[Classorinstance Method];or understood as the delivery and acceptance of messages[Receiver message];Examples are as follows:1 New ] init];

setting a color value to it is not valid. label.enable = NO;8, highlighted//whether highlightinglabel.highlighted = YES;Label.highlightedtextcolor = [Uicolor orangecolor];//Highlighttext color when displayed9, Shadowcolor//Set shadow color[Label Setshadowcolor:[uicolor Blackcolor];10, Shadowoffset//Set shadow offset[Label Setshadowoffset:cgsizemake ( -1,-1)];11,

Ui update operations in IOS are actually the same as those in Android. They are not time-consuming operations in the main thread. Therefore, you need to enable new threads to perform these operations, to avoid blocking the main thread. After the operations in the new thread are completed, the main thread is called to update the UI. The following is an example: 1. Declare the imageview Control

Network Fundamentals of IOS Development 11 HTTP requests complete process1. Establishing a TCP connectionBefore HTTP work begins, the Web browser first establishes a connection to the Web server over the network, which is done through TCP, which works with the IP protocol to build the Internet, known as the TCP/IP protocol family, so the internet is also known as a TCP/IP network. HTTP is a higher level of

(1/18) re-learn Standford_iOS7 development _ iOS overview _ course notes, standford_ios7_ios Preface: the last course I learned was a bit confusing for iOS. Due to lack of practice, I sometimes cannot understand the knowledge well when I watch videos in open classes. It is always the best way to learn with questions. After a period of

IntroductionAs the author is doing iOS development, so this article is only for iOS counterparts have targeted, other directions for reference only.1, if you:About 1-3 years of work experience, undergraduate, non-computer-related courses were born, the school is more general.Internship enterprises are not ideal, the sc

1. PrefacePreviously, I learned the basic syntax of Objective-C. From today on, I started to learn simple IOS view development. 2. UIAlertView2.1 normal bullet boxThe best way to use the prompt view is to use a specific initialization method: [Plain]-(Void) viewDidLoad{[Super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.// Title: This string is displayed on the top o

Disclaimer: This blog post is the author's original work. Reference 1 Reference 2 reference 3 Reference 4 reference 5 Reference 6About the online some about the iOS material, oneself through the study to do some sort of, here only as notes, facilitates oneself the coding process to constrain the norm, deepens the understanding.1. What is Handoff? ReferenceHandoff

1. Difference between shallow copy and deep copy? What is the difference between shallow replication and deep replication? BytesAnswer: copy the pointer to the object instead of the referenced object. Deep copy: copy the referenced object itself. Copying means that I have an A object. After copying a copy and getting the_copy object, for the shortest copy, A and a_copy point to the same memory resource, copying is only a pointer, and the resource quot

special instruction execution, which determines the efficiency of the stack is high.The heap is provided by the C + + function library, and its mechanism is very complex. 7. Memory management mechanism of Objective C8. Does iOS have garbage collection9, the reuse mechanism of UITableView10, when the Viewcontroller Loadview, Viewdidload, Viewdidunload, respectively, when the custom Viewcontroller in a few functions should do what work?

Usage of the predicate (NSPredicate) in iOS: (1) basic usage In iOS development, the system provides the NSPredicate class for us to perform some matching and filtering operations, which is very convenient. When this class is not used, we need to write code to compare some specific elements in two arrays. However, if we use this class, we only need three or four

; @end For View , the logic should not be included, and the data should be fetched directly from the model. For Controller Most of the interaction logic is concentrated here, all View the data needed is Controller extracted Model and then presented view to the data.11. Overriding the Getter/setter method Suppose declaring a property: 123 @property (nonatomic, copy) nsstring *blogname;

];}Triggering events-(void) Handlemaxshowtimer: (Nstimer *) Thetimer{NSDateFormatter dateformator = [[NSDateFormatter alloc] init];Dateformator.dateformat = @ "Yyyy-mm-dd HH:mm:ss";NSString *date = [dateformater stringfromdate:[nsdate Date]];if ([Date isequaltostring:@ "2011-11-09 23:59:59"]){Uialertview *alert = [[Uialertview alloc] Initwithtitle:title_namemessage:@ "There's a new Day right now!" ”Delegate:selfAncelbuttontitle:nilOtherbuttontitles:co