objective c declare boolean

Objective-C Analysis1. Introduction I have been engaged in IOS development since today, and then PHP development to better understand development. Objective-C is the prerequisite for IOS development. This article briefly summarizes its knowledge

Objective-C beginner's Guide (version 2nd)Basic InformationOriginal Title: Objective-C for absolute beginners: iPhone, iPad, and Mac programming made easy, Second EditionAuthor: (US) bernett (Bennett, G.) (US) Fisher (Fisher, M.) (US) lies (Lees, B.)

Objective-C magic path [5-select structure], objective-c5- Master haomeng is devoted to his contribution and respects the author's Labor achievements. Do not repost them. If the article is helpful to you, you are welcome to donate to the author,

Objective-c syntax (2), objective-c syntax Common Errors in the description and definition of oc classes 1. There is only a class declaration and no class implementation. 2. @ end missing 3. @ interface and @ implementation are nested, that is, @

There is a certain C + + or Java Foundation, over the OC syntax can be, are interlinked, personally think the difficulty is OC memory management, although there is ARC, but also need to learn, because the old software maintenance.Based on the C

IOS Development Series-Objective-C memory management, iosobjective-cOverview We know that a large number of objects need to be created during the program running. Similar to other advanced languages, objects in ObjC are stored in the heap, the

Closures are functional self-contained modules that can be passed and used in Code. Closures in Swift are similar to those in the blocks in C and Objective-c and Lambdas in other programming languages.Closures can capture and store references to

Data type1.OBJECTIVE-C data types can be categorized as: Basic data types, object data types, and ID types.2. The basic data types are: int, float, double, and char type.3. The object type is the type of pointer declared by the class or protocol,

One, about the empty lineEmpty lines in the A:.h1. Empty 1 lines between file description and header file inclusions (#import)2, header file inclusion (#import), if you need to classify the difference between categories, empty 1 lines3, header file

one, about the empty lineEmpty lines in the A:.h1. Empty 1 lines between file description and header file inclusions (#import)2, header file inclusion (#import), if you need to classify the difference between categories, empty 1 lines3, header file