define defragment

We usually define non-constant values as constants, which are generally represented in all capitals, with no dollar sign in front of them, and can reduce errors in team development. So what's the difference between a define and a const?1, const is a language structure, and define is a function that can be specified by the third argument for case sensitivity. True

About define (' Discuz_root ', substr (DirName (__file__), 0,-7)); Understanding define (' Discuz_root ', substr (DirName (__file__), 0,-7)) ;Get site root directoryFor the above statement has not understood what is meant to check the relevant information a little closedFirst: This statement consists of three functions of define (), substr (), DirName ()1.

For example: Here the program file starts with the following #define statement Copy Code code as follows: #define N 10 #define PI 3.14 #define MAX 10000 #define HEIGTH 6.65 ... ... Let's say the program is running an error, and if we have

1. Const is used for class member variable definition, once defined and cannot change its value. Define defines global constants that can be accessed everywhere.2. Define cannot be defined in a class and const can.3. Const cannot define constants in conditional statementsif (... { const FOO = ' BAR '; // if (..... ) {

css|frontpage| Tips When many people find it convenient to define CSS in DW4, they start complaining that FP2000 can't define CSS, or even criticize how bad FP2000 is. In fact, it's easy to define CSS in FP2000, even in some ways it's easier to define than DW4! 　　Define styl

Replace const, enum, and inline # define Basically, you can use const, enum, or inline to replace the pre-processing command # define. There are two main reasons: # Define ASPECT_RATIO 1.653 1. preprocessing commands are pre-processed before compilation (gcc-E is used for preprocessing, and its output file is used as the input for gcc-S compilation ), therefore,

This article mainly introduces how to use mini-define to implement modular Management of front-end code. It is a very good article. We recommend it to partners who need it. Mini-define A simple front-end modular framework based on require. If you don't want to spend time learning require. js or look at the long cmd/amd specifications, then this mini-define is yo

Difference between const and define in php If (...){ Const FOO = 'bar'; // invalid } But If (...){ Define ('foo', 'bar'); // valid } 4. const uses a normal constant name, and define can use an expression as the name. For example: Const FOO = 'bar '; For ($ I = 0; $ I

Define section:Macros can be used instead of constant values, and can be used instead of expressions, even code snippets. (Macros are powerful, but error-prone, so their pros and cons are quite controversial.) ） The syntax for a macro is:Macro value #define Macro name As a recommendation and a common practice for a broad range of programmers, macro names often use all uppercase letters. Advantages of usin

This article introduces, PHP in the Static,const and define usage difference, the need for friends to refer to it.In PHP, often use static,const and define, today we come to understand the difference between the next three what?Define: A macro can be used instead of a constant value, and it can be used instead of an expression or even a code snippet. (Macros are

Yesterday interview by the Group of Examiners asked about the const and define similarities and differences, began to be simple, then asked my head is a group of paste. Almost a summary of the information today1. Const and define.Both can be used to define constants, but the const definition defines the type of the constant, so it is more accurate. #define只是简单的文本

Define the nameset: A nameset is a multidimensional expression (MDX) that returns a group of dimension members ). You can define a nameset and save it as part of a multi-dimensional dataset definition. You can also apply it on the client.ProgramCreate a nameset. You can create a nameset by combining Multidimensional Dataset data, Arithmetic Operators, numbers, and functions. The name set can be used by the

link address: http://blog.sina.com.cn/s/blog_686188ef0100klku.html # define is a macro definition Command provided in C, the main purpose is to provide some convenience for Program programmers in programming, and to improve the program running efficiency to a certain extent, however, when learning this command, students often cannot understand the essence of the command. It always creates some confusions and misuse it during programming, This

you want to know thisArticleMore details about the things mentioned in. These things can be used as a reference. Okay. Where can I start? First, we will configure the plug-in that contains the view and add org. Eclipse. UI. navigator to the dependency (dependencies. Then, we use the org. Eclipse. UI. Views extension point to define a view part and use the org. Eclipse. UI. Navigator. commonnavigator class as the implementation class of the view par

Basically, you can use Const,enum or inline to replace a pre-order # define. The main reasons are two:#define Aspect_ratio 1.6531. Pre-processing instructions are preprocessed prior to compilation (GCC-E is preprocessed, its output file is compiled as Gcc-s input), so the compiler is not able to see the symbol Aspect_ratio defined by # define, so it does not appe