pch questions

1, PCH IntroductionPCH file is a precompiled file, in the case of more project files, the duplicate import (#import "XXX.h") the same file is unavoidable, although can be repeated import, but for the simple and clear project, PCH file is necessary. For example, when I request the network will use the AFN, when only in the PCH file to write #import "Afnetworking/a

What is the. pch filePrecompiled header file (general extension. PCH) is a project in which the more stable code is pre-compiled and placed in a file (. PCH). These pre-compiled code can be any C/s code--or even an inline function--that is more stable throughout the project, i.e. code that is not often modified during engineering development.My own understanding

PCH file is a header file, except that the class of the header file can be used in the global, so it is very convenient, and do not have to write in each class A number of repeating class header file, as long as the use of the class's header file into the PCH file inside the line, of course, there is a macro definition, this must also be necessary.So how to use it so good.1.Command + N Create a new

When you create a project in Xcode5, the system automatically creates a PCH file with the name of the project, but removes the precompile Prefix header file from the Xcode6. The main reason Xcode6 removed precompile Prefix header might be that the Prefix header greatly increased the build time. Without the prefix header, manual @import will be manually imported to the header file, losing programming convenience while reducing the build time.How do I m

Precompiled header file (the general extension is. PCH) is to compile the more stable code in a project in advance and put it in a file (. PCH. these pre-compiled codes can be any C/C ++ code-or even inline functions, but they are relatively stable throughout the project, that is, the code that is not frequently modified during the project development process. Why do we need to pre-compile the header file?

When you create a project in xcode5, the system automatically creates a PCH (precompile prefix header) file named by the project name, during development, you can include widely used header files and Macros in this file, and the compiler automatically adds the header files in the PCH file to all source files, in this way, you can directly use the content in the header file without using import when you need

How to add a pch file in xcode6,When you create a project in Xcode5, the system automatically creates a pch (Precompile Prefix Header) file named by the project name, during development, you can include widely used header files and Macros in this file, and the compiler automatically adds the header files in the pch file to all source files, in this way, you can d

When you create a project in Xcode5, the system automatically creates a PCH (precompile Prefix header) file with the name of the project, which you can use to include a widely used header file and a macro in the development process. The compiler will automatically add the header files in the PCH file to all the source files, so that the contents of the header file can be directly used without using import w

1. pch File:PCH means "precompiled header", called Precompiled header file, Xcode6 after the PCH file needs to be added manually, PCH file generally put some basic unchanged code, such as some macro definitions so that the entire project can be used or some framework of the header files.PCH file is designed to improve the efficiency of compilation, a file is modi

PCH file for iOS learning,1. Overview of PCH files A pch file is a pre-compiled header file (generally with the extension. PCH) That precompiles stable code in a project and stores it in a file (. PCH. These pre-compiled codes can be any C/C ++ code-or even inline function

I. INTRODUCTIONFirst the PCH file (ie: Prefix Header) is a precompiled file that is created automatically by creating a new project before Xcode 6, but after Xcode 6, Apple officially changes the way it is automatically created to manual manually created later;This file is primarily used in project engineering to store the more common and stable classes in which the method resources are shared at development time, without having to refer to their head

iOS development-the role of Info.plist and PCH files1. The role of Info.plist and PCH files2. Common use of UIApplication3. Proxy method for Appdelegate4. The relationship between UIApplication, Appdelegate, UIWindow, Uiviewcontroller5. Full boot process for iOS programs﹣info.plist file ﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣ I'm a split line ﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣﹣Bundle Display Name (previous version) bundle name (new)

1. pch File overview PCH file is a precompiled header file (a generic extension of. PCH) is a project in which the more stable code is pre-compiled and placed in a file (. PCH). These pre-compiled code can be any C/s code--or even an inline function--that is more stable throughout the project, i.e. code that i

Swift reads app version information There is time we need to read the app version information such as configuration information, so we can use the method: Nsbundle.mainbundle (). Infodictionary to get Example:SwiftLet infodictionary = Nsbundle.mainbundle (). infodictionaryLet shortversion = infodictionary! ["Cfbundleshortversionstring"]Print (shortversion!)PCH file PCH file name: Generally named after t

Add PCH FileAfter Xcode6 does not automatically create-prefix.pch files to your project, so we want to use the PCH file, we have to manually import, the following describes how to manually add the PCH file to the project directory.(1) Open the Xcode project that you already exist. Select File > New > File > IOS > Other > PCH