pch hotels

Before Xcode6, create a new project Xcode automatically creates a "project name-prefix.pch" file under the supporting Files folder, which is also a header file, and the contents of the PCH header file can be shared and accessed by all other source files in the project. is a precompiled file.First, let's talk about the role of PCH:1. Store some global macros (macros that are used throughout the project)2. Us

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

Create a project before xcode6. The system will automatically create a PCH (precompile header) file named by the project name. A file named-Prefix will be displayed under the supporting files file. the file ending with PCH. PCH is the "precompiled header", that is, the pre-compiled header file. Some codes that are not frequently modified in the project stored in

Reference Document http://blog.csdn.net/crazyzhang1990/article/details/44243343The red part is my own supplementary noticeBefore Xcode6, create a new project Xcode automatically creates a "project name-prefix.pch" file under the supporting Files folder, which is also a header file, and the contents of the PCH header file can be shared and accessed by all other source files in the project. is a precompiled file.First, let's talk about the role of

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

Before Xcode6, when a new project is created, the system will automatically create a PCH (precompile header) file with the name of the project, and during the development process, the header files that are widely used throughout the project can be included in the file. The compiler will automatically add the header files in the PCH file to all the source files, so that you can use the contents of the header

Before Xcode6, create a new project Xcode automatically creates a "project name-prefix.pch" file under the supporting Files folder, which is also a header file, and the contents of the PCH header file can be shared and accessed by all other source files in the project. is a precompiled file.First, let's talk about the role of PCH:1. Store some global macros (macros that are used throughout the project)2. Us

Tags: HTTP Io OS use AR for file SP 2014 Before xcode6, when creating a project, the system will automatically create a PCH (precompile header) file named by the project name. during the development process, the compiler automatically adds the header files in the PCH file to all source files by including the header files widely used in the entire project, in this way, you can directly use the content in the

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)

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

Application Scenarios for PCH files:1. Used to define some global macros2. Used to import some global access to the header file (if only need to let. m or. mm file access, do not need to let. c file access, then you need to write the head file to #ifdef _objc_ #endif之间, because. m and. mm files have a default _objc_ Macros and. c files are not ).3. Use the log from definitionThe contents of the PCH file can

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

reminder: PCH precompiled files are no longer automatically created after Xcode6Before Xcode6, create a new project Xcode automatically creates a "project name-prefix.pch" file under the supporting Files folder, which is also a header file, and the contents of the PCH header file can be shared and accessed by all other source files in the project. is a precompiled file.first, let's talk about the role of

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

Development Tools/Materials:1. Mac2, Xcode (I'm currently using the latest version of Xcode Xcode 7.3) Part of the history of PCH files:Definition: PCH is all called "Precompiled Header", which is the precompiled header file , which helps to save development time and code maintenance time .Development: In the old version of Xcode, after the creation of the project will automatically create a

PCH file is a globally visible file in iOS development, which generally writes the global variables required in the program to the PCH file as a macro definition, such as a screen fit, and how to add a PCH file after X-code6:First Command+n, open the new File window: ios->other->pch file, create a

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