Objective-C

Tiobe published the November 2011 programming language Rankings, the top 20 rankings have not changed much. From the chart below, you can see that the C camp is still the world. It is only two months since Tiobe released the 2011 Annual programming

As a friend of C + + has learned, when we define Struct/class, if we set the Access qualifier (public,protected,private) to public, then we can access the data members directly from the. Like what In Test.h class Test {public : int i;

Egocache Introduction Egocache is a simple, Thread-safe key value cache store. It has native support for NSString, Ui/nsimage, and NSData, but can store anything that implements . All cached items expire on the timeout, which by default, are one

2011-05-11 11:20 anonymous Baidu Encyclopediafont Size:T | T Objective-c is an object-oriented programming language that expands C. Mainly used in Mac OS X and GNUstep, two systems using OPENSTEP standards, while in NeXTSTEP and OpenStep it is the

Using C + + with Objective-cApple's Objective-c compiler allows users to freely mix C + + and objective-c in the same source file, with a mixed language called objective-c++. With it, you can use an existing C + + class library in your OBJECTIVE-C

A dictionary class Two sets of classes A fast traversal of a three-array dictionary collection Four-array sorting Five array elements sorted by numeric size First, the Dictionary classA dictionary to save a collection of data

15th: Avoid namespace collisions with prefixesObjective-c has no other language built-in namespace (namespace) mechanism. The following error occurs when a naming conflict program connection occurs:Duplicate symbol _objc_metaclass_$_eoctheclass

Understanding Method Swizzling is a good opportunity to learn the runtime mechanism. Not much to do in this, only translated by Mattt Thompson published in Nshipster's method swizzling article.Method Swizzling is a technique that changes the actual

Original address: http://onevcat.com/2013/05/talk-about-warning/ A moral integrity programmer cares about the warning of his code, just like a dead cockroach on the edge of a job. --@onevcat Attention to compilation warningsThe

First, the Protocol protocol is mainly to provide interface, or similar to C + + multiple inheritance function, to provide a cosmetic mechanism for the class. The protocol is not born for callbacks, it should represent a set of interop conventions.

IdThe ID is a pointer to the Objective-c object, equivalent to void* in C, which can map any object pointer to him, or map it to other objects. The common ID type is the delegate property of the class.SELThe SEL type is a keyword that OBJECTIVE-C

English Original: Understanding Automatic Reference counting in Objective-c The automatic reference count (Automatic Reference counting, ARC) removes a lot of the burden of managing memory on the programmer's shoulders, not to

Book Description Want to write IOS apps or desktop MAC applications? This introduction to programming and the Objective-c language are your first step on the journey from someone who uses apps To someone who writes them. Based on Big Nerd

A moral integrity programmer cares about the warning of his code, just like a dead cockroach on the edge of a job. --@onevcatattention to compilation warningsThe compiler can now be noisy, and the warnings given by the compiler are useful

origin = pt; Copy the pt address of the object into the origin . Two variables all point to the same address in memory Foundation object: Assigning a variable to another object simply creates another reference (address) to the object.

Memory Management: Ensure that memory is allocated when needed, freeing up memory at the end of program run If you allocate only memory without freeing up memory, a memory leak occurs (leak memory), and the program's footprint is

The copy of the object is to copy an object as a copy, and he will open up a new memory (heap memory) to store the replica object, just as the file is copied, that is, the source object and the replica object are two different areas of memory.

1. Invalid constant 0X10.5 0x0g1 98.7u 17777 s 0996 1.2Fe-7 15,000. 2. // You only need to list the expressions. Int F = 27; // set F to the Fahrenheit temperature and assign a value of 27 float C; // set C to the Celsius temperature, type is

I have translated the technical information of the apple Dev center and slightly modified it. Reprinted please indicate the source: http://blog.csdn.net/zhyzh2046/ Learning objective-C: basic readingObjective-C is a simple computer language that

Most beginners who have a basic development experience on other platforms are eager to see xcode. After seeing the interface builder, they are eager to get started with the objective-C syntax, the first thought becomes daunting. Okay, I'm talking