what switch case

Exception: There is no syntax error, and during program run, due to some reason the program has an error and can no longer run properly.If you want the program to become more robust, you should often use Try-catch to catch exceptions in your

Overview of single portal applicationsWhat is a single portal application?Before explaining what a single portal application is, let's take a look at traditional Web applications.News.php Show News ListNews_edit.php Show News Edit PageThese two

JS (JavaScript)first, the history story of JavaScript1. The origin of JavaScript language and name (Netscape,Sun Java)2. Microsoft's Explorer and JScriptsecond, JavaScript overview JavaScript a literal-translation scripting language is a dynamic

PHP Process Control statements and data type conversions in conditional judgments PHP's Process Control statements include loop body statements and branch judgment statements. The loop operation consists of three sets of statements, namely while,

Switch statementIf you want to selectively execute one of several code blocks, use the Switch statement.Use the Switch statement to avoid lengthy code blocks such as if... elseif... else.Syntax The code is as follows:Copy code Switch (expression)

2017.08.13Day 5 sunny daysphp-Sequential structureThe sequential structure is like a straight line, which is carried down in order. The code we write is executed by default in the order structure.PHP Conditional Structure If...else ...The

1. Do not copy variables randomlySometimes in order to make the PHP code more neat, some novice PHP (including me) will copy the predefined variables into a shorter name of the variable, in fact, the result is an increase in memory consumption, will

What is a single portal application?Before explaining what a single portal application is, let's take a look at traditional Web applications.News.php Show News ListNews_edit.php Show News Edit PageThese two pages have not only implemented two

First, IF1. The first form: ifif (logical expression) { statement 1; Statement 2; ...}You can omit {} when there is only one statement in the IF2, the second type: If-elseif (logical expression) { else { statement block 2;}3,

JavaScript is a world-leading programming language for Web development, mobile application development (PHONEGAP, Appcelerator), server-side development (node. js and Wakanda), and more. JavaScript is also the first language for many beginners to

Question 1: Replace Switch...case with a commissioned dictionary. This problem is found in the processing of the request, we certainly do not want to build a lot of handler in their own projects to deal with so many requests, so the idea of

echo is faster than print.Use Echo's multiple parameters instead of string concatenation.To determine the maximum number of loops before executing the FOR loop, do not compute the maximum value per loop, preferably by using foreach instead.For

Overview A lot of people are talking about the state pattern when they're comparing it to a strategy, and maybe their class diagrams are a little bit similar, but I don't think they're much alike. You can read the Java design pattern--The strategy

Beetl2.7 Chinese Document Turn from: http://ibeetl.com/guide/ Beetl Author: Li Jiazhi [xiandafu@126.com] (mailto:xiandafu@126.com) 1. What is Beetl Beetl current version is 2.7.23, relative to other Java template engine, with full-featured,

In fact, the meaning of "if else" is the same as the literal meaning, that is, "if" or "otherwise". Let's take a look at an example that uses if. If you're writing a program for a robot, the robot's function is to evaluate the user's hobby. Robot:

When it comes to the branching structure in JavaScript, we have to mention the word Process control, and all of our programs are made up of data and algorithms.program = data + algorithmUsually we call the algorithm can be done by "order", "branch",

Implementation of Lightweight Process Control Component Based on netty http protocol stack, netty protocol stack Today is the winter solstice, the so-called "Winter New Year", the company should also let everyone go home at five o'clock to eat

JavaScript is a world-leading programming language for Web development, mobile application development (PHONEGAP, Appcelerator), server-side development (node. js and Wakanda), and more. JavaScript is also the first language for many beginners to

0. DescriptionThe references are: if, while, for and the else, elif, break, continue, and pass statements that match them. 1.if statements Grammar If Expression:expr_true_suiteIn the expression section, you can use logical join

The format of the switch statement:　Switch (integer or character variable){The case variable may have a value of 1:Branch one;BreakThe case variable may have a value of 2:Branch two;BreakThe case variable may have a value of 3:Branch