Objective-C

IOS9 has added a lot of new features (What ' New in IOS 9.0-apple Developer), and the search feature is interesting to me. In a nutshell, there are three different ways to implement local and server two searches. Try it yourself. The second is to

Bought this "learn Objective-c on Mac", a start to buy looks very thin, 250 pages, after reading, found that the language has a lot of common place, the new features are from C + + and Java similar to come over, is changed a name, feel after seeing

First, OC Introduction1.OC is an object-oriented programming, the main decomposition of the problem composed of objects, coordinate the object to contact and communication to solve the problem.2.C language is a process-oriented idea, which analyzes

The first thing to note is:" Auto Reference Count " (Automatic Reference counting, ARC, see 30th) is not " exceptionally safe " by default (Exception safe). Specifically, this means that if an exception is thrown, the object that should have been

[Master Objective-c] Blocks (block)Reference book: "Proficient objective-c" "Beauty" Keith LeeDirectory Proficient in block objective-c Directory Syntax for blocks The lexical range of a block Memory management

Auto Free Pool is a semi-automatic memory management methodAutorealease Method:-(Instancetype) autoreleaseThis method places the object in the auto-free pool, and all objects in the pool are destroyed when the pool is automatically freed.Common

First, the traditional get method and set methodIn Java, we can access the public member variables of an object by "object name. Member variable name", which is called "point syntax". Before you formally learn the point syntax of OC, take a look at

First, the knowledge point simple introductionWhat is a 1.UIScrollView control?(1) The screen of the mobile device? Small is extremely limited, so direct exhibition, the content of the user's eyes is also very limited(2) When the exhibition shows

Nsarray ordered Natural orderNsset disorderly.Nsset cannot store duplicate data, it can be used to remove duplicate data1. Create a Collection1.1 Creating immutable Collections　　　　1Nsset *Set= [[Nsset alloc] Initwithobjects:@" One",@" Both",@"three",

category and associative as the extension mechanism of the objective-c two features, category is the type, you can extend the method through it, associative, you can extend the property through it, in iOS development, Perhaps the category is more

Objective-c with the upgrade of Xcode 7 brings a lot of new features, of course, the most important update is the introduction of Objective-c's lightweight generics, specifically the Objective-c class of lightweight generics. In addition, there is a

The method of invoking a class or instance (object) in a specific language in the OC language is called a Send message or method call.There are two ways to invoke methods in OC:The first type: [Class name or object name Method name];

The first word Official Code specificationOBJECTIVE-C coding specifications, the content from Apple, Google's document translation, their own coding experience and the summary of other materials.ProfileObjective-c is an object-oriented, dynamic

Objective-c Chapter 1 Hello World1.11.2.On The Welcome screen, click "Create a new Xcode project" (see Figure 2-1), or just chooseFile->new->new Project.1.3. Write the following code in main#import int Main (int argc, const char * argv[]) {

typedef struct PERSON{int age;Char *name;}person;int main (int argc, const char * argv[]) {@autoreleasepool {person person;Person.name = "Little Fellow";Person.age = 20;Person Liusanjie;Liusanjie.name = "Liu Sanjie";Liusanjie.age = 45;/*1, the

ConceptNSLog () can use the%@ format specifier to output an object. When NSLog () processes the%@ specifier, it asks the corresponding object in the argument list to get a description of the object. Technically, NSLog () sends a description message

The Objective-c control statements have the following three categories:Branching statements: If-else,switchLooping statements: While,do-while,forJump statement related to program transfer: Break,continue,goto. Branch statementsBranching

The classification in objective-c allows us to augment it by adding a method to a class (but we cannot add new instance variables through category), and we do not need to access the code in the class.The protocol in OBJECTIVE-C is a ubiquitous

Objective-C supports global variables. There are two main implementation methods: the first one is the same as that in C/C ++, and the "extern" keyword is used; the other is the singleton implementation. (For example, we often put a variable in

@ Class keywordsTo import a certain type of functional code, you need to include this class. h file. If you only need to know that this object is a class (for example, the following declaration in a file: person * person;), you can use @ class