what switch case statement

Learn android from scratch (android event handling method. 24 .) There are a variety of events in android, each of which has its own Processing Mechanism For example 1 Click Event View. OnClickListener Public abstract void

//1. The function of an expression statement: Executing an expression and discarding the evaluation result intValue =Ten; Value+5;//Execute, and discard the result//2. A compound statement is a sequence of statements and declarations enclosed in

Speaking of this topic, let's start by discussing a question with a friend today. {A:1,b:2} will error directly in console output "uncaught syntaxerror:unexpected token:"; At first I could not understand, a normal object, why will the error? In fact,

     1. When you specify a variable for the first time, do not forget to use var: Specifies an undeclared variable. If var is not used, it is declared as a global variable to avoid global variables; 2. replace '=' with '= ': = (Or! =) The operator

Five practical tips for optimizing PHP performance:      The following are five optimization techniques, which are very helpful for development after mastery.      1. Use single quotation marks for strings      The PHP engine allows the use of

30 skills required to learn python and python30 skills  Collect these useful shortcuts 1. Exchange two numbers in the same place We create a new tuple on the right of the value assignment, and parse the unpack (unreferenced) tuples on the left to

Python3 condition control (9) and python3 condition Control A Python Condition Statement is a code block that is determined by the execution result (True or False) of one or more statements. You can briefly understand the execution process of

A Brief Introduction to Python process control statements and python process statements People often say that life is a process of constantly making multiple choice questions: some people do not have to choose, there is only one way to go; some

[Reading Notes] C # Chapter 2 core C #, (1) The first C # Program Create a console application, enter the code, and then click F5. Console. WriteLine (); the meaning of this statement: output the content in the brackets to the interface; Console.

1, the program structure: in the C language program, a total of three kinds of program structure: The order structure, the choice structure (branch structure), the circulation structure;Sequential structure: From beginning to end a sentence followed

2.6. Process Control Statement 2.6.1. JudgeJudgment statementSyntax for the IF statement:if (condition) statement1 else statement2　　If the condition evaluates to True, Statement1 is executed and statement2 is executed if the condition evaluates to

First, compare the intermediate code generated by the two code segments: Public class AppConfig { Public static final boolean debug = true;}Public class DebugCode {Public static void main (String [] args ){If (AppConfig. debug ){System. out. println

Pig C ++ note BASICS (5) expressions and statements, pig BasicsPig C ++ note BASICS (Part 5) Keywords: expressions, statements The content in this chapter is relatively simple, and there is basically no difficulty in understanding it. It is a matter

A comprehensive introduction to javascript practical skills and single vertical bars and javascript Practical Skills JavaScript itself can be regarded as a simple language, but we are constantly improving it with wisdom and flexibility. Yesterday we

A factory that implements automatic registration in C ++ I haven't updated my blog for a long time. It's not because the blogger is not lazy. It's because the blogger is helping graduate students get master's thesis, positioning, imu, pedestrian

Condition and loop1. if statement   1 >>>a=7 2 >>> if a   Elif is short for 'else if'. The use of the if statement implements switch case statement usage.2. for statement   1 >>> words = ['cat','fish','window']2 >>> for w in words[:]:3 ... if

Python BASICS (9): Conditions and loops, 2015 python Condition StatementThe if statement in Python is as follows: if expression:　　expr_true_suite Here, expression can use the boolean operators and, or, and not to implement multiple judgment

AddressFirst, single choice1. The following description of the collection class is incorrectA. Name the attribute containing the set meaning and try to include the meaning of its pluralB. Data in the collection does not need to be freed and the

All of these tips can help you compress your code and optimize your operation. In addition, you can easily use them in real projects in your daily work.Tip # # #. Exchange two numbers in situPython provides an intuitive way to assign values and

How do I stop this loop or jump out of a loop in a loop in jquery? Look up some information and try to find the following method1. For loop we use continue; terminate this loop to count to the next loop, using break to terminate the entire loop.2.