oc autostyle

and sequential [same serial synchronization] is performed# Parallel asynchronous execution results: new multiple threads are created , operations are executed out of order (there is, error prone!) If there are other tasks before the queue, wait until the previous task is completed.Scene: does not affect the main thread, do not need to order the operation of the line!　　# parallel synchronization is performed before asynchronous results are performed: The asynchronous execution is not performed u

[2030:140148] DDD -- .- on -:Panax Notoginseng:55.987array[2030:140148] DDD -- .- on -:Panax Notoginseng:55.987array[2030:140148] Sad -- .- on -:Panax Notoginseng:55.987array[2030:140148] Sad -- .- on -:Panax Notoginseng:55.992array[2030:140148] SS -- .- on -:Panax Notoginseng:55.992array[2030:140148] DDD -- .- on -:Panax Notoginseng:55.992array[2030:140148] Sad -- .- on -:Panax Notoginseng:55.992array[2030:140148] Sad -- .- on -:Panax Notoginseng:55.992array[2030:140148] DDD -- .- on -

about the time the object was released(2) No need to worry about when to call releaseWhen will the Autorelease be released?For Autorelease pool itself, it will be released when the following two conditions occur1) Manually release Autorelease pool2) automatic release after Runloop endFor objects inside the Autorelease poolReleased when the reference count is retain = = 0. Both release and autorelease pool drain trigger the retain– event.9. BlockStatic variables and global variables in addition

: : person *p2 = [[Person alloc] init]; : p2.age = 25; : @ "Jake"; 18: : NSLog (@ "%@", p2);3. Usage of the Description method 1: //determines the output of the instance object 2: //-(NSString *) Description 3: //{ 4: ////The following code will cause a dead loop 5: //// NSLog (@ "%@", self); 6: // return [NSString stringwithformat:@ "age=%d, name=%@", _age, _name]; 7: // //return @ "3424324"; 8: //} 9: Te

//Request Address 2 NSString *urlstring = @ "http://192.168.1.102:8080/MJServer/login?username=123pwd=123"; 3//Initialize a Nsurl object 4 nsurl *url = [Nsurl urlwithstring:urlstring]; 5 6//Initialize a request 7 nsurlrequest *request = [Nsurlrequest Requestwithurl:url]; 8 9//Send a sync request ten nsdata *data = [Nsur Lconnection sendsynchronousrequest:request Returningresponse:nil error:nil];11 12//Parse into string data NSString *str = [[[ NSString Alloc] Initwithdata:data encoding:nsutf8s

parentheses are required.Note that a pair of parentheses is appended to the Darkgraycolor, because Darkgraycolor is a class method of Uicolor, not a property. In Objective-c, a parameterless method with a return value can be used as an implicit access function (implicit getter) and can be called using the same method as the accessor. However, in swift it is no longer possible to do so, only attributes written using the @property syntax in Objective-c can be introduced as attributes. See Working

OC language @property @synthesize and IDOne, @property @synthesize keywordsNote: These two keywords are compiler features that allow Xcode to automatically generate the declarations and implementations of getter and setter.(i) @property keywords@property keyword can automatically generate a declaration of the setter and getter method for a member variable@property int age;When the compilation encounters this line, it is automatically extended to the f

delegate;@end@implementation Button6> prevent unrecognized selector sent to instance 0x100114f10, method is not implemented or does not have this method, to determine if there is no implementation of this method-(void) Click{If _delegate implements the OnClick: method, call this methodif ([_delegate respondstoselector: @selector (OnClick:)]){When the button is clicked, you should notify the listener and tell the listener which button was clicked.[_delegate onclick:self];}Else{NSLog (@ "Listener

OC Language Construction methodFirst, the construction method(i) Call to construct methodComplete creation of an available object: Person *p=[person new];The inner part of the new method calls two methods to accomplish 2 things, 1) Use the Alloc method to allocate storage space (return allocated objects), 2) Use the Init method to initialize the object.The new method can be opened as follows:1. Call the class method +alloc allocate storage space and r

() { printf ("%s/n", [Greeting_text utf8string]); } }; @inte ***ce Greeting:nsobject { @private Hello *hello; } -(ID) init; -(void) dealloc; -(void) saygreeting; -(void) saygreeting: (hello*) greeting; @end @implementation Greeting -(ID) init { if (immolation = [Super init]) { Hello = new Hello (); } return immolation; } -(void) Dealloc { Delete Hello; [Super Dealloc]; } -(void) saygreeting { Hello->say_hello (); } -(void) saygreeting: (hell

1. OC Introduction Objectuve-C is short for OC, where objective refers to object-oriented, that is, object-oriented C. Based on the C language, a minimum object-oriented method is added (the essence of object-oriented syntax is retained) Fully compatible with C language The following code is written in the OC source file (. M file), indicating that the

PrefaceFinally opened the study of OC, before because of work, learning has been stranded, but recently for various reasons, feel must open iOS development journey, or old. Because it has been done Android, so learning iOS is not so hard, of course, we know that Android is supported by the Java language, iOS is OC-supported, about OC learning, and Java relative t

Today finally the basic knowledge of OC finished, but these knowledge is the most basic, there are a lot of high-level knowledge, this may need to learn slowly behind to understand. The following is the study of the directory of OC Tutorial, if you find that there is something wrong place, please correct me, younger brother is a freshman, more please OC veteran t

------Java Training, Android training, iOS training,. NET training, look forward to communicating with you! -------iOS development (including apps on iphone and ipad) uses the language objective-c, the OC language, which was born in 1986 and is an older language. OC is fully compatible with the C language, which means that all of the syntax features in C are available in

The code address is as follows:Http://www.demodashi.com/demo/12754.html Js-oc-swiftJS and Oc/swift call each other, mainly summarizes the JS and OC interaction of three ways1. Using UIWebView, use javascriptcore to achieve2. Using Wkwebview, use wkscriptmessagehandler to achieve3. Using a third-party framework Webviewjavascriptbridge implementationPartJavaSc

OC and Swift call one, OC invoke Swift file two, Swift call OC file Three, note and summarize add: Iv. custom bridging file One, OC invoke Swift file　　When you create a swift file in the OC project, Xcode prompts you to create a bridging file, click OK to create the bridging

The previous article introduced the realization of OC and JS by UIWebView the possibility and implementation of the principle, and a simple implementation of a small sample demo, of course, There are some legacy problems, the use of native implementation process is cumbersome, the code is difficult to Maintain. This article mainly introduces the implementation principles and methods of the open source Library webviewjavascriptbridge, and uses this ope

1.OC Language Overview1>foundation.h we call it the main header file, and the header file of all the tools in the toolbox is copied, we only need to import the main header file to use all the tools in the toolbox, to avoid importing a corresponding header file for each use.Toolbox Address:/applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/sdks/iphoneos.sdk/ System/library/frameworksRule: All primary header files have the

First, IntroductionThe language of OC, as much as possible, defers some decisions from compilation and linking to runtime. It will handle things as much as possible 动态 . This means that the language requires not only a compiler, but also a runtime system to execute the compiled code. This runtime system plays a role in the language operating system of OC, which allows the language to run.This tutorial explo

1. What is cocoa? Cocoa is a toolkit written in OC language, which has a large number of libraries and structs, which is actually equivalent to standard APIs in Java and standard libraries in C + +. There is no concept of namespaces in OC, so prefixes are used to prevent naming collisions, so you will see a large number of NS-prefixed class names, structs, enumerations, and so on.2, the cocoa Framework cons