Objective-C

Objective-c is the best Class C, object-oriented programming language I have used. Objective-c is perfectly compatible with standard C, and on top of this is the Smalltalk element that interprets the fundamental concept of object-oriented, making it

First, 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

A description of the literal in the computer programming language is available at: Http://baike.baidu.com/view/1208327.htm?fr=aladdin.The following describes the various common literals in OBJECTIVE-C:#import intMain (intargcConst Char*argv[]) { /

Objective-c objects, functions, and methods (the relationship of object, function, and method).In Objective-c, the function of the object is called "method"."Implementation" refers to what the iOS actually did when a method was called, that is, what

1. InheritanceOBJECTIVE-C does not support multiple inheritance. Super Keyword: Call the parent class of the class; superclass: Another way of saying the parent class.2. Custom NSLog () output:Adding the description method to a class allows you to

List the referenced documents

First, the basic conceptPolymorphism in the code embodiment, that is, a variety of forms, must have inheritance, no inheritance is not polymorphic.When polymorphic is used, dynamic detection is performed to invoke the real object method.Polymorphism

In this blog post, we will introduce how to use memory management in OBJECTIVE-C. When a program runs, it does not release unused space memory when it is not in time. Then, the program will become more and more bloated, memory consumption will

this article reprinted to http://www.cocoachina.com/ios/20141124/10296.htmlI believe we all know about the 23 design patterns mentioned in Gof's "Designing Patterns", which divides the common design patterns into three categories: the creation model,

There are two types of object replication: Deep replication and shallow replication. It sounds very difficult, but it is actually very simple; For example: Nsmutablearray * array1 = [nsmutablearray arraywithobjects: @ "A", @ "B", nil];

Uiwebview is one of the most commonly used sdks for iOS. It has a stringbyevaluatingjavascriptfromstring method that can embed Javascript into the page. Through this method, we can interact with webpage elements in uiwebview in IOS.

Obtain the current date: nsdate * Date = [nsdate date]; // However, In this method, the UTC event is obtained. Nsdate * Date = [nscalendardate date]; // obtain the local time. Get the date of yesterday: Nsdate * Yesterday = [[nscalendardate

Note: This is an example of "objective-C basic tutorial". However, the original book is limited to space and has a simple analysis. It is difficult to read it for the first time. Here we will discuss it in detail. Scenario: There are two types of

@ Indicates the "objective-c" flag, proving that you are using the objective-C Language Objective-C language keyword, @ property and @ synthesize pair. Function:Let the compiler automatically write a method declaration with the same name as the

Categories is a way to add features to classes that do not get source code. This page collects related category and keeps updating. You can subscribe to follow. The author is fille? Str? M is the co-founder and developer of @ imgnry. Thank you for

---------------------- ASP. NET + unity development,. Net training, and hope to communicate with you! ----------------------   Three main characteristics of object-oriented (essence): member variables, methods) encapsulation, inheritance, and

Article 3: communication between objects through delegated and Data Source protocols Objects often need to communicate with each other, but there are many communication methods. OC developers widely use a programming design pattern called "delegate

There are only two hard things in Computer Science: cache invalidation and naming things.There are only two difficulties in Computer Science: cache invalidation and naming. -Phil karlton computer language is a medium for communication between people

  1. Omitted 2. #import int main(int argc, const char * argv[]){ @autoreleasepool { // insert code here... NSLog(@"In Obiective-c, lowercase letters are significance .\n main is where program execution begins.\n Open and

In objective-C, you can use # import and @ class to reference other types. But do you know the differences between the two? @ Class is called forward-class. You often see the reference through @ Class in the header file definition, because when you