switch structure

Let's talk about the use of the Exit function. Function: output a message and terminate the current script. If a paragraph of text contains more than one script that ends, exit exits the current script. For example, a PHP text including the code,

Control | Grammar control structure As in other languages, Java also contains the following three control structures: A sequential structure Statements are executed one after another in the order in which they were written. Two-choice structure 1

Hello everyone, we go on to the front today, the front has probably talked about the operator, today's task is mainly to explain the logical conditions of the branch, loop.We first to simulate a logic block, we often contact with the purchase of

I. Operator 1. Arithmetic Operator-$ a is used to take the negative value of $. $ A $ B adds the sum of $ a and $ B. $ I. Operator 1. Arithmetic Operator-$ a is used to take the negative value of $. $ A $ B adds the sum of $ a and $ B. The

The goto operator can be used to jump to a specified position in the program. You can add a colon to the target location. The goto operator is added after PHP5.3 +. It is used to jump to another position of the program. Its usage is simple: The goto

004-Process Control and type conversion, 004-process Conversion Process Control Sequential structure, selection structure, and cyclic structure 1. Ordered Structure The program is executed sequentially by default. 2. Select a structure If SELECT

Swift and Objective-c syntax reference Swift has been available for a while. Today we will summarize the differences between the syntax of Swift and Objective-c (hereinafter referred to as OC. 1. constants and variables: Defining constants and

C # knowledge point, C # Cross-language and java cross-platform C # is an object-oriented language Three basic features of object-oriented architecture:1. Encapsulation2. Inheritance3. Polymorphism Output line breaksConsole. write ();Output line

Direct point, the factory model is to take over the creation of objects, at the same time, new () can do the additional exception handling, initialization and other operations, but also reduce the coupling between the modules, easy to maintain and

The structure of the route table and the forwarding table can be divided into two parts: the routing part and the routing part of the group forwarding part are also called the control part, and its core component is the routing selection processor.

Layer-3 switches are quite common, so I have studied new technologies in layer-3 switches. Here I will share them with you and hope they will be useful to you. CrossBar (CrossPoint) is called a cross-switch matrix or a horizontal-exchange matrix. It

5. desktop switchesA table-based switch is the most common low-end switch. It is different from other switches in that it supports a small number of MAC addresses per port. Generally, the number of ports is smaller than 12, but it is not absolute),

CrossBar (CrossPoint) is called a cross-switch matrix or a horizontal-exchange matrix. It is recognized as the preferred switching network structure for building large-capacity systems. The three exchange structures are shared bandwidth to a certain

There are many things worth learning about layer-3 switches. Here we mainly introduce the architecture and performance of layer-3 switches. CrossBar (that is, CrossPoint) is called a cross switch matrix or a horizontal switch matrix. It can well

Layer-3 Switch: the principle of layer-3 switch is that two hosts A and B Using IP addresses communicate with each other through the layer-3 switch. When Site A starts sending, it compares its IP address with the IP address of Site B to determine

Use of Windows SDK Hook, sdkhook Problems encountered when using SetWindowsHookEx Function prototype HHOOK WINAPI SetWindowsHookEx( _In_ int idHook, _In_ HOOKPROC lpfn, _In_ HINSTANCE hMod, _In_ DWORD dwThreadId); 　　 WinHook. h // WinHook.h:

If structure1.if structure*IF selection structure is determined according to the conditions and then processed.① BASIC If structureif (condition){code block}②IF-ELSE selection Structureif (condition){Code Block 1}Else{Code Block 2}③ Multiple If

Every programmer must abide by some excellent programming styles and every programmer Whether you are an amateur or professional programmer, the correct programming style will not only help improve the functions of software products, but also

Note: This shows the encoding specification from the phpcms development documentation. Although it is called the phpcms development specification, I think this is the case for all PHP programming. After writing so many PHP codes, many codes may not

Assignment The basic meaning of a value assignment is to modify the value of a variable or field in a table. This is not much different from other languages. But for Lua, there is a feature that allows "multiple values ", that is, assign multiple