pch media

Add. pch and xcode6.pch in Xcode6When you create a project in Xcode5, the system automatically creates a pch file named after the project, but removes the Precompile Prefix Header file in Xcode6. Xcode6 removes the Precompile Prefix Header mainly because the Prefix Header greatly increases the Build time. Without the Prefix Header, you must manually import the He

PCH file, pch File 1. Introduction The PCH file is a global reference shared file in Xcode programming. The header file or macro definition can be introduced here to facilitate access to multiple files in the program. 2. Create a PCH File Open Project New File... -> IOS Other->

First, create the PCH file. Click Command+n. such as OperationNaming conventions are generally: project name-prefixStep TwoOK, you have finished making the PCH file here. Then you can use it.PCH files generally write data that can be used globally.Like what:The width and color of the screen (no punctuation behind the macro)#define RGB (r,g,b,a) [Uicolor colorwithred: (r/255.0) Green: (g/255.0) Blue: (b/25

/*To reference a PCH to a project:1.apple llvm7.0-language inside the precompile prefix header set to Yes2.prefix Header: $ (srcroot)/name of your project name/your PCH file*/#ifndef myselfpch_pch#define MYSELFPCH_PCHThe contents of the #ifdef __objc__//inside can only be used in. m or. mm files#ifdef debug//Commissioning Phase#define ZKZLOG (...) NSLog (__va_args__)#else#define ZKZLOG (...) Release phase#e

1.Create A. pch file.2.Write your macro, headfiles or something. Here is my prefixheader.pch3.Choose the Project and select "Build Settings">>> Find with keywords "prefix">>>make the "precompile Prefix Header" is "Yes".4.Tell Xcode where has you put your. pch file. Select "Prefix Header", Double click the contentand write "$ (srcroot)/magicnote/prefixheader.pch"or "$ (project_dir)/your PROJECT name/your

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

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

This article turns fromHttp://www.cnblogs.com/496668219long/p/4568265.htmlBefore 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. S

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

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

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

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

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

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