Objective-C

At present, mobile development in the buzz, today at home to learn the recent "Objective-c Basic Tutorial", the initial feeling objective-c and. Net difference is very big, in order to better understand objective-c, will take note of the form of

1. Memory Storage AreaC, C + + inside. Stack area: Stores temporary variables and objects. Heap Area: stores dynamically allocated objects. Static variable Store: stores static variables and constant objects.The memory storage area of OC is the same

The objective-c object Modelas a objective-c software developer, you can still do a lot of work without having to understand Objective-c's originator C language and the object model adopted by OBJECTIVE-C. In fact, because these features are really

1. Related ConceptsBefore this note is started, we need to understand the following concepts.1.1 Stacks and heaps in the operating systemNote: The heap and stack mentioned here are not the same as the heap and stack in the data structure.Let's take

Class-dump is an easy-to-use objective-c anti-compile analysis tool that extracts class definitions from objective-c compiled binaries in the form of objective-c header files.Class-dump is an open source tool, the official website address is: http://

A large number of objective-c developers have emerged in the past few years. Some are transferred from a dynamic language, such as Ruby or Python, some of which are transferred from a strongly typed language, such as Java or C #, and, of course,

1, Introduction:The property is a objective-c keyword, used in pairing with @synthesize , to allow the compiler to automatically generate a method declaration with the same name as the data member. @synthesize is the implementation that is used to

IOS:If it is only for internal access, you can directly use _ XXX (underline), without your own definition, the compiler will automatically generateIf you need external access to this variable, you can use@ Property xxx;@ Synthesize xxx = _ XXX. In

AOP programming concept in objective-C In the software industry, AOP is short for aspect oriented programming. It is a derivative model of functional programming. A technology that implements unified maintenance of program functions by means of pre-

Math in C language. h has a function: Double POW (double N, double M); Calculate math of C language to the power of M of N. h has a function: Double SQRT (double N); Calculate the value of the root number N (start n). The string in C: char * name = "

Three features: encapsulation, inheritance, and Polymorphism  Encapsulation:Encapsulation of member variables in order to filter invalid attribute values, we need to provide a method to set the age attribute values for the outside world. Set

Http://foredoomed.org/blog/2014/02/24/object-modeling-of-objective-c/ Objective-C is an object-oriented programming language formed by the Smalltalk message mechanism added to C. It is mainly used by Apple to develop Mac OS X and iOS operating

From: http://blog.csdn.net/onlyou930/article/details/9299169classification: Objective-C2013-07-11 11: 54 3420 people read comments (0) collection reports Association is to associate two objects, so that one of the objects as part of another

Conversion from: instancetype and ID keyword in objective-CI. What is instancetype? The same as the ID indicates an unknown object.  2. Related Result types) According to the naming rules of cocoa, the following rules are met: 1. In the class method,

Article 11th: understanding the role of objc_msgsend Calling methods on objects is a frequently used function in OC. In OC terminology, this is called "pass a message ). A message contains a "name" or "selector", which can receive parameters and may

In iOS development, nslock is commonly used to achieve simple mutual exclusion. Nslock operations include lock, unlock, trylock, and lockbeforedate. Therefore, the so-called lock and unlock are simple thread locks. trylock and lockbeforedate are two

Objective-C blocks All of these examples have been verified with this version of llvm: Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)Target: x86_64-apple-darwin11.4.2Thread model: posixExample void exampleA() { char a =

Do not repost the labor results of developers Objective-C is obviously different from other object-oriented systems.The following describes the features of this method: compatibility, wordString, class, method, attribute, protocol, and

Do not repost the labor results of developers C language was first developed at the at&t lab, The development of Unix OS has promoted the rapid popularization of C language. Almost all unix OS are written in C language. Brad J. Cox designed the

# Objective-c kvc automatic conversion type Apple is very kind. During the time of KVC, we made some type conversions and posted the rules for your reference. @ Interface entity: nsobject @ property (nonatomic, copy) nsstring * STR; @ property