switch case statement

1. javascript is a weak type language, not non-type. There are two types of js types: 1: undefined, null, boolean, string, number, object; 2: undefined, boolean, string, number, object, function. I personally admire the second type. On the one hand,

The goal of PHP optimization is to get the fastest running speed and the most easily maintained code at the lowest cost. This article provides you with comprehensive optimization skills. 1. echo is faster than print. 2. use multiple echo parameters

I. Variables and Expressions Copy the Code code as follows: >>> 1 + 1 2 >>> print ' Hello World ' Hello World >>> x = 1 >>> y = 2 >>> x + y 3 Python is a strongly typed language and cannot be converted to the appropriate type based on context

In linux, # is used in Shell scripts to express comments, which is equivalent to the C language // comments. But if # is at the beginning of the first line and is #! (Shebang) is an exception. it indicates that the script uses the specified

This article mainly introduces the basic conditions and cycle control of Python3. If you need it, you can refer to the example in this article to explain the conditions and cycle control statements of Python3 and their usage, it is an important

When learning C language, we have learned three types of process control statements: sequence, condition, and loop. The first few flow control statements in the Tianyi programming language ranking list seem to be almost the same, This is the truth. 1

In the "Qt on ANDROID:QT Quick event processing signal and slot" described in QML how to use the built-in type of signal and how to customize the signal, this time we look at how to deal with the mouse, keyboard, timer and other events. These times

In C #, statements are mainly divided into sequential statements, branch statements, and loop statements. In this part of the study, the main explanation of the branch statement. The branch statement mainly includes the IF statement and the switch

This article describes how to use a command object to replace the switch statement. The switch statement is forbidden in the JS specification. Using the command object can perfectly solve this problem, if you need a friend, you can refer to someone

Refactoring: longer and longer switches... case and if... else, switchcase In Code, conditional expressions such as switch... case or if... else are usually expanded with a Type Code. As the business logic of the project increases and the code is

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

First, Process Control OverviewProcess Control of the program-Program = data + algorithm-Any complex program algorithm can be implemented by "order", "branch", "Loop" three basic program logic combinations650) this.width=650; "src="

C # review ③, C # review ③ June 16, 2016 11: 13 Main Declaration& StatementDeclarations and statements 1.What is the declarative space contained in a program? Namespace: declarations of classes, interfaces, structs, enums, delegates Namespace:

As you know, JavaScript is the world's first programming language. It is a Web language and a language for mobile hybrid apps (such as PhoneGap or Appcelerator ), it is a server-side language (such as NodeJS or Wakanda) and has many other

Android and androidratingbar learning from scratchIf you want to rate an application, you will often use the components shown in the figure to determine the final score by selecting the number of "five-pointed stars" in Android, you can use the

1. The following program does not necessarily output hello-std-out. Do you know why? # Include # Include Intmain () { While (1) { Fprintf (stdout, "hello-std-out "); Fprintf (stderr, "hello-std-err "); Sleep (1 ); } Return 0; } Reference answer:

First:Use Func to declare a function, using the name and arguments to invoke the function. Use to specify the function return value.Use a tuple to return multiple values.The number of arguments to the function is variable, with an array to fetch

In the last two days, we opened the C + + Textbook of undergraduate school and quickly reviewed the contents of C + +. Although the book content is relatively basic, but still some knowledge points worthy of self-reinforcing memory. Several articles,

      A complete explanation of the original question is as follows: Description A competition was just over. It had 3 problems and n players. Eachplayer had an ID number from 1 to n.? Nal rank wasdecided by the total score of the 3 problems. the

What is the difference between single quotes and double quotes in php? 1. the variables in double quotation marks are parsed and output, while those in single quotation marks are not parsed.2. The resolution speed of single quotes is faster than