Objective-C

One, string cutting1, with a node string, such as @ " hate node " We just want the middle of the Chinese Processing method: Copy Code code as follows: NSString *string1 = @ " hate node "; /* Here will not want to put all the

There are three ways to implement regular expression matching in iOS. Now record them all here: 1. Using nspredicate (predicate) matchingFor example, to match a valid mailbox: NSString *email = @ "nijino_saki@163.com"; nsstring *regex = @ "

the problem solved Everything is produced in the real life of the urgent need for such things, people by thinking about inventing something to solve the problem. Then the automatic release pool is used to solve any problems. Take a look at the

Objective-c's protocols and proxies are one of the most widely used features, and can be said to be ubiquitous in the development of the Apple series. In fact, many people do not know the principle behind it. In fact, simply put, this is the classic

One, installation of the IDE (Code::Blocks)We use Code::Blocks as the IDE, its installation package can be downloaded from all over the web, no special requirements for the version. The author uses the version of 16.10 (link: https://pan.baidu.com/s/

There is only a things in computer science:cache invalidation and naming things.There are only two difficult things in computer science: Cache invalidation and naming. –phil Karlton Computer language is the medium of communication between

The classification in objective-c allows us to augment it by adding a method to a class (but we cannot add new instance variables through category), and we do not need to access the code in the class.The protocol in OBJECTIVE-C is a ubiquitous

Today I used some of the usual strings in my project, so I created a constant.h file that was defined by # define.Later on the internet to see the big gods are recommended to use string constants to define, so I have all the macro definitions are

* Represents a pointer with an addressThe ID can be used to hold a reference pointer, such as:void Drawshapes (ID shapes[],int count) {ID shape = shapes[0];}[Shape draw] in Objective_c, the square can also represent: used to notify an object of what

First, the Knowledge point1. Introduction to Data selection controls Uipickerview and date selection controls Uidatepicker controls* Case of Uipickerview* Ordering System* City Selection* Flag Selection* Case of Uidatepicker* Introduction and basic

Objective-c class and Object summary:header files. h files: (header file)Declaration of class: @interface class Name: Name of the parent classConventions for class names: 1, capital letters, such as personParent class: Usually NSObject, we can also

Artifice refers to a skill and a product that is too kit and useless.IMS refers to Instance method swizzling, which is confused by instance methods.The next section of code is an example of a instance method swizzling and a method swizzling://MAN.M-

Cinema Ticket System/Concert ticket systemRequirements Analysis:First we enter the system, then we will choose to buy movie tickets or buy concert tickets, so this involves the synthesis of two systems. But we know all is the ticket system, so we

Objective-c is the C language superset, so the basic type is the same, so learn C language friends, in the face of objective-c will not be too unfamiliar, after all, the data type is the same, but the data processing method is not the same, then we

A chain-type addition calculator to realize the idea1. Effect on useCalculate * Manger=[calculate new];int Result=manger.add (123). Add (123). Sub (123). Result;The output is: result:1232. Implementation methodsNew calculate class;Add an attribute

Objective-c Http://rypress.com/tutorials/objective-c/indexC Basicshttp://rypress.com/tutorials/objective-c/c-basicsComments Annotations   Inline comments   Block comments   Confusing Snippest Puzzle (code) fragment   self-documenting self record  

In the daily development of NSString, Nsdictionary, Nsarray, NSData, nsnumber these basic classes of data persistence, you can use the method of the attribute list persisted to the. plist file. But some of our custom classes, the way the property

Transferred from: http://mobile.51cto.com/hot-322261.htm 2012-03-07 13:43 junwong Open Source China communityfont Size:T | T As a objective-c coder, I can always hear some people complaining about a lot of problems in this language. They're always

Today we learn two methods, one is to sort the string, and the other is to sort the number of constants.Create a person class, and in the Person.h file, set the instance initialization and the setter getter method to also declare the sorted method

 How to use static variables in Objective-cThe use of static variables in objective-c is what this article describes,objective-c supports global variables , there are two main ways of implementation: the first and C + +, using the "extern" keyword;