define define

- h,-- HelpDisplay Help Information-am,--Also-makeBuild the specified module while building the other modules that the specified module relies on; -amd,--also-make-dependents Build the specified module while building other modules that depend on the

When you build a site, you may have to face the fact that the site needs a programmer to design the program and a website designer to organize the pages. So, is there a way to combine the two well together? There is the use of templates

In the C ++ programming process, const can be used frequently. It plays an immeasurable role in ensuring program security. It is the most accurate expression in one sentence: "Small soldiers make great contributions ". With const, mutable cannot be

Constant: Representing constants with macros If we want to write a program for various computation of circles, then the round (3.14159) value will be widely used. We obviously have no reason to change the value of limit, so we should treat it as a

Message ing and loop mechanisms are the basic methods for running Windows programs. There are many ready-made message handles in VC ++ MFC. When we need to complete other tasks and customize messages, we have encountered some difficulties. In MFC

PLSQL variables can be of the following four types: -Scalar) -Composite) -Reference) -Lob type (large object) 1. scalar type:-Only variables with a single value can be stored.-When defining a scalar, you must specify the data type. 1.1 common

The source code of the C program may include various compilation commands, which are called preprocessing commands. Although they are not actually part of the C language, they extend the C programming environment. This section describes how to use

Native QR code scanning in iOS This article describes how to use the built-in system to scan QR code: click a button on the current page to create a scan VIEW. Careful friends can find that the title is changed and the return button is hidden. This

IOS prints Debug logs. The following macros are briefly introduced: 1) _ VA_ARGS _ is a macro of a variable parameter. The macro of this variable parameter is added in the new C99 specification, currently, only gcc is supported (not supported by the

JS Object-Oriented Programming details, js Object-Oriented Programming PrefaceIn the big world of JavaScript, we need to discuss object-oriented. Two points should be mentioned: 1. JavaScript is a prototype-based object-oriented language. 2. It

Algorithm learning, algorithm Learning WebsitePriorityQuenue The priority queue is the ADT of the job scheduling class, which is implemented using the binary heap.The priority queue has at least two operations: Insert and DeleteMin ).Insert

Sometimes we encounter such a situation where a software is divided into several versions. In fact, most of the content is the same, but there are slight differences between several files. Therefore, we hope to compile different versions in the same

Address: http://www.cppblog.com/shuiyuan2004/archive/2008/03/29/45677.html Boost Test The Test Library contains the following components:Execution MonitorAn exception and error detection and reporting mechanism is basically used for program

140. Use the default access modifier. If no access modifier is added, the member variables are private by default, and the class is internal by default. To clarify the access permissions, we recommend that you add access modifiers, which saves a

Variables defined in makefile are like Macros in C/C ++. They represent a text string, when executed in makefile, the original mode is automatically expanded in the used place. Unlike C/C ++, you can change the value in makefile. In makefile,

Preface In actual projects, Javascript development faces a big problem, that is, poor code controllability. As the project progresses, the amount of JavaScript code may explode. If you do not control it, the potential problems will increase. In

Three methods for receiving parameters for action: 1. Use the property of action to receive parameters:A. Definition: Define attributes in the action class and create get and set methods;B. Receive: receive parameters through properties, such as

Visual C # is a new-generation programming language launched by Microsoft, and Visual C # is a Microsoft Company. NET framework is an important part of the framework, and Microsoft strongly recommends a new program development platform to

In the past few days, I have studied the source code of uC/OS II and found that the program design method provided by it can effectively solve the problem of the above title. It is mainly implemented through the # ifdef preprocessing command. Let's

The first version has some problems, so we need to improve it on this basis. Looking back at the property practices in C #, the private members of the class are actually accessed. For example, the Length attribute is generally a private member named