Objective-C

#import int main (int argc, const char * argv[]) {@autoreleasepool {///////// Read the file;//1. local files; 2. network file;//path class NSString *string11 = @ "http://www.baidu.com"; Network path, should be read according to

Stackflow on the question "C + + and objective-c What are the similarities and differences?" Downstairs of the two provided the information is very good.One is: Pierre Chatelier wrote Download Link:

• Branch statements• Looping statements• Jump StatementsThe control statements in Objective-c have the following categories:• Branching statements: if-else, switch• Looping statements: While, Do-while, for• Jump statements related to program

OC ArrayNsarray is a static array, that is, it points to the content is immutable, it points to a memory area, once initialized, it can not be used to modify the memory area of the data, but it is able to read the data.Nsmutablearray is a subclass

AssociationAssociation refers to associating two objects together so that one of the objects is part of another object.The affinity attribute is only available on Mac OS X V10.6 and later versions.Add extra storage space for a class beyond the

1, the use of random numbers 1), arc4random () more precise do not need to generate the seed immediatelyHow to use:The code for obtaining an integer between 0 and X-1 by Arc4random () is as follows:int Value = arc4random()% x; The code to get an

Classes, Objects, and MethodsLearn about the classes, objects, and methods in Object-c below.Objective-c as an object-oriented language, the most basic is the name of Object.object, is the object, that is, one thing.In the case of real life, our car

The This in Java can only be used in dynamic methods, not in static methods The self in OC can be used either in dynamic methods or in static methods Description: This objective-c topic is a prelude to learning iOS development, and to

reference counts and stringsThe spatial allocation of constant strings in memory is different from other objects, they do not have a reference counting mechanismall custom objects have a reference counting mechanism;objects within OC are divided

The basic conditions of reading in this article are: Basic knowledge of C + +, understanding object-oriented features Read "OBJECTIVE-C 2.0 Program Design (second edition)", "objective-c Program design 6th Edition" or related Foundation

Original link: The official raywenderlich.com objective-c style guide Original Author: raywenderlich.com Team Version: raywenderlich.com objective-c Coding Specification Translator: Sam Lau As I'm preparing to mimic the

We know that self represents an instance of the current class. You can call a method to access a property.So what is _cmd ?That's what Apple's official documentation says.The _cmd variable is a hidden argument passed to every method, that's the

Versions and platformsThe runtime system, for Objective-c, is like its operating system, or running support platform, which allows the OBJECTIVE-C code to run in accordance with established language features. In contrast to C + +, objective-c as

http://www.justinyan.me/post/1624Note: This is a translation of Colin Wheeler's understanding the Objective-c Runtime.Beginners OBJECTIVE-C (hereinafter referred to as OBJC) can easily ignore a OBJC feature--OBJC Runtime. This is because the

------Java Training, Android training, iOS training,. NET training, look forward to communicating with you! -------Compiler attributes @property and @synthesize1. @property@property can automatically generate setter and getter declarations for a

------Java Training, Android training, iOS training,. NET training, look forward to communicating with you! -------One, dot syntaxThe purpose of OC design point syntax is to enable other language developers to quickly get started with the OC

Author: failingProgramMember-eight gods Objective-C, which has been used on the Apple development platform for many years, has a very unique syntax. If you compare C # (not to mention Java first) with its language features, it would be a heaven

Do not repost the labor results of developers Operators and expressions Operators can be divided into the following types: ? Arithmetic Operators, +,-, *,/, %, ++ ,―― ? Relational operators,>, =, ? Boolean logical operator ,! , &, | ? Bitwise

Let's continue to talk about the fraction class in objective-C separation interface and implementation file. If there is a way to set numerator with only one message At the same time, you can set denominator. How nice is that! No problem. By listing

Objective-C exceptions are similar to Java exception handling, and @ finally processing is also required, regardless of whether the exception is captured or not. Syntax captured by Exception Handling @try { } @catch (NSException