objc

Comparison of other IOS languages-Comparison Between Objc and JAVA, ios-objc 1. Objc is a compilation language and JAVA is a parsing language. Compile-type language: compile all the source programs into executable programs with binary code. Then, you can run the program directly. Compiled language, fast execution speed and high efficiency; less dependent on c

IOS IM development preparation (2) install and use protobuf-objc, iosprotobuf-objc Google Protocol Buffer (Protobuf) is a hybrid language data standard within Google. You can download Protobuf source code on the http://code.google.com/p/protobuf/downloads/list (however, you need FQ access ). Protocol Buffers is a lightweight and efficient structured data storage format that can be used for serialization or

Build Process (objc), build process objc Read this article and take notes. We 've been spoiled in recent days-we just need to click a button in Xcode (this button looks a bit like playing some music). After a few seconds, our program will run, unless there are some errors, this is amazing. In this article, we will explain the Build process from a more advanced perspective, and explore the relationship betwe

installation:Click the Build and then the bottom right corner of the install to start the installation:Wait a few minutes, after the installation is complete, turn off the computer.After you shut down and shut down the MAC OS X Mavericks virtual machine, open the VirtualBOX settings virtual machine, and the Controller SATA properties Storage, exit the Hackboot_mav.iso file. The results after exiting are as follows:On the motherboard of the virtual machine setup, select Enable enabled EFI:Starti

http://demo.netfoucs.com/banqingyang/article/details/43051671 xcode6.0 upgrade to xcode6.1, the program compiles an error, as follows: This is a very common error, many projects after the replacement of the Xcode version, there will be similar problems. Undefined Symbols for Architecture x86_64: "_objc_class_$_qqapiinterface", referenced from: Objc-class-ref in APPDELEGATE.O "_objc_class_$_sharesdk", referenced from:

On the Mac, after you upgraded IntelliJ idea 2017.01, there was a red warning on the run: OBJC[8715]: Class Javalaunchhelper is implemented in both/library/java/javavirtualmachines/jdk1.8.0_131.jdk/contents /home/bin/java (0X102C804C0) and/library/java/javavirtualmachines/jdk1.8.0_131.jdk/contents/home/jre/lib/ Libinstrument.dylib (0X102D5C4E0). One of the two would be used. Which one is undefined. Workaround: In idea, make a modification idea.propert

This is the upper part of "OBJC and Duck Object", "ObjC and Duck object (bottom)" introduced the duck type of advanced usage, Dependency injection and demo.I'm the preface.鸭子类型(Duck Type) that is:"When you see a bird walking like a duck, swimming like a duck, and barking like a duck, then this bird can be called a duck", the Program Ape language is:"When the caller knows what method this object can invoke,

今天隔壁老王突然问起我，Swift里面的@objc是个神马玩意儿？于是就有了今天的这个tip。那么话说回来，既然说到@objc，就不得不扯一扯Swift和Objective-C之间不得不说的一些事啦^_^Objective-c and Swift Hybrid developmentThe original purpose of Swift language is to hope to get rid of the heavy historical burden and restraint of objective-c, but it is undeniable that after more than 20 years of baptism, the COCOA framework has long been branded an indelible mark of objective-c. Countle

In-depth introduction to ObjC messages Luo chaohui (Http://blog.csdn.net/kesalin) Reprinted please indicate the source In entry-level objc tutorials, we often say to programmers who transfer data from C ++, Java, or other object-oriented languages that method calls in objc (the term in objc is message) it is similar to

beginning of the story. Objective-c and Swift use two completely different mechanisms at the bottom, and the Objective-c object in Cocoa is run-time based, and it follows KVC (Key-value Coding, storing object information in a dictionary-like way) and dynamic Dispatch, which determines the specific implementation of the actual invocation when the call is run. And Swift, in pursuit of performance, will not be determined at runtime if there is no special need. In other words, a member or method of

I've previously written a RPG game The compiler is using Spritebuilder, very good and powerful! All the code is done by OBJC, and now you want to try to mix the swift code in it.My purpose is simple, write a GCMan9 class with Swift, derive from the Gamecharacter class in OBJC, and finally use the GCMan9 class in OBJC.The Gamecharacter class is the base class of the game characters, and I derive more than 10

member or method of the Swift type is determined at compile time, and the runtime no longer needs to go through a lookup and can be used directly.Obviously, the problem with this is that if we are going to use Objective-c's code or feature to invoke the pure Swift type, we will fail because we cannot find the required runtime information. It is also easy to solve, in the Swift type file, we can add the @objc modifier to the declaration of any place t

system reports an error that cannot identify the message sending. ========================================================== ========================================================== ========================================================== ====== The following article references: http://www.cppblog.com/kesalin/archive/2011/08/15/objc_message.html In-depth introduction to objcOfMessage In entry-level objc tutorials, we often say to programmers wh

xcode6.0 upgrade to xcode6.1, the program compiles an error, as follows: This is a very common error, many projects after the replacement of the Xcode version, there will be similar problems. Undefined Symbols for Architecture x86_64: "_objc_class_$_qqapiinterface", referenced from: Objc-class-ref in APPDELEGATE.O "_objc_class_$_sharesdk", referenced from: Objc-class-ref in APPDELEGATE.O

xcode6.0 upgrade to xcode6.1, the program compiles an error, as follows: This is a very common error, many projects after the replacement of the Xcode version, there will be similar problems. Undefined Symbols for Architecture x86_64: "_objc_class_$_qqapiinterface", referenced from: Objc-class-ref in APPDELEGATE.O "_objc_class_$_sharesdk", referenced from: Objc-class-ref in APPDELEGATE.O

Today, when the Friends of the League to share, the error caused the system crashes. Weibo SDK compile time error, need in buildsetting in other linker, add-OBJC, note O and C uppercase.Some third-party libraries have a category for the system library classes,At this point, you need to use the compile parameters:-OBJC, so that the third-party library of the System class extension method can be used in the p

Today, in the objc project, when some C and C ++ files are imported, compilation causesNsobjcruntimeError, check carefully and find that it was originally defined in sk_prefix.pch # Ifdef _ objc _ # import This causes the non-objc file in the project to introduce these declarations, so the above error occurs. The solution is to put all relevant statements_

Preface Objectivec and JS Interaction is a common demand, can be novice or so-called master, in fact, is not so simple and clear. Only the JavaScriptCore framework that comes out of iOS7.0 is introduced here. About JavaScriptCore the several types involved in this tutorial: Jscontext, Jscontext is the execution environment representing JS, through the-evaluatescript: Method can execute a JS code jsvalue, Jsvalue encapsulated JS and OBJC in the corresp

If you've seen me before. Two OBJC function hub Msgsend and your impression of NSString is this, I believe that has seen its figure many times, in the end it is what role, I today to uncover the mystery.I call it a pseudo-pointer, because it is like a ghost, without a physical (instance), but can behave like a OBJC object instance. Can you guess the result of running the following code?//Non-arcIDUnknown =

Can C + + support the reflection of Java and OBJC?To answer this question. First we need to know what reflection is. What is reflection?I will not say the explanation of the textbook, (^o^) In fact, I do not remember. The reflection of the actual development application is to access the value of the member field of an object of this type without a header file of a type or a class structure definition. Call the member function (method) of this object.F