by define

Why enumeration types are requiredAll of the features in a programming language are designed to meet a certain need, and to achieve a certain purpose. It's not going to happen there.An enumeration can be used to hold the values of a set of

For the Linux source code, read-ctags + vim-general Linux technology-Linux programming and kernel information. The following is a detailed description. 1. Install ctags Download the source code to the http://ctags.sourceforge.net, unzip

Because the macro constants defined by # define are global and cannot be achieved, it is thought that the data members should be modified with Const. Const data members do exist, but their meaning is not what we expect. Const data members are

Const and define all define constants in PHP, but what are their specific differences? In fact, very simple const is used for the definition of a class member variable, once defined and cannot change its value. Define defines a global constant that

I. File structure Create 3 foldersThe controller folder stores controller files.View folder stores view filesModel folder stores data filesCreate an index. php as the only entryIi. ControllerCreate a democontroller. php file in the controller folder.

Today, I read the php source code and found that the second parameter of define can also be an object. let's take a look at how to use it. According to the manual, the constants defined by define are only allowed: Only scalar and null are allowed.

Often there are small partners in the process of learning PHP due to version inconsistencies, encounter some compatibility issues. Here we take a look at what PHP is currently doing with a larger number of versions, and which features need to be

name SpaceOne of the most clear purposes is to solve the problem of duplicate names, PHP does not allow two functions or classes to appear the same name, or it will produce a fatal error. In this case, as long as you avoid naming duplicates can be

Template tag call description. Website Copyright: {$ web_config.W_SN} website Title: {$ web_config.W_ST} website Keywords: {$ web_config.W_KW} website description: {$ web_config.W_DS} website URL: {$ web_config.W_U} website copyright: {$

Add the latest tag to the information in the smarty template. In the smarty template, add the new character label after the information title added within 24 hours after the current time as follows: {if $ smarty. now-$ article. in the ad smarty

Three methods are recommended to enhance CMS security. Since web development, the author often receives security upgrades for other websites. most of these jobs are websites built by Zhimeng cms, since being attacked for web development, the author

Smarty template variable Operator summary. I haven't used Smarty for a project for a long time. today, I suddenly want to modify some of my website's content, because my website was made a long time ago using the smarty template engine, I have not

How the smarty template is executed. To enable separation of the business logic and content presentation page of the program, php introduces the template engine concept, the most popular php template engine is smarty, which introduces the template

Constants contain numeric alphabetic characters and underscores, and numbers are allowed as constant names. All letters of a constant name must be capitalized. A class constant must be defined by a const as a member of a class and strongly

Note: many of my friends are familiar with buffer overflow, and I have provided many tutorials on using buffer overflow in windows (I have also written several articles ). But I haven't seen the complete overflow tutorial in linux (maybe my own eyes

A very good third-level horizontal navigation menu written by jquery. The code is concise and clear, and it is very easy to modify. I will post it below. You can download the required menu, which is provided below! JQUERY horizontal third-level

Article Title: ctags + vim, the source code reading tool in Linux. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic

Difference between const and static in c ++, conststatic Static has three main functions: (1) local static variables (2) external static variables/functions (3) static data member/member functions The first two types of C and C ++ are available,

Multi-file structure and compilation preprocessing commands1. General organizational structure of C + + programsTypically, a project is divided into at least three files: a class definition file (*.h file), a class implementation file (*.cpp file),

Namespace one of the most explicit purposes is to solve the problem of duplicate names, PHP does not allow two functions or classes to appear the same name, otherwise it will produce a fatal error. In this case, as long as you avoid naming