statement of condition sample

$a=5;switch($a){ case 6: echo "\$a is 6"; case 5: echo "\$a is 5"; case 4: echo "\$a is 4";} As in the above example, my understanding is that each time $ A is compared to the value of the case, the output statement is the same, and the

Javascript conditional statements include the following:Single condition structure (if condition statement)Bidirectional condition structure (if... else condition statement)Multi-condition structure (switch condition statement)Single condition

Python basics-condition judgment and python basics judgment 　　Python version: 3.6.2 Operating System: Windows Author: SmallWZQ So far, the programs in the basic Python series are executed in a single statement sequence. In this chapter, I will focus

Reprint Please indicate the source: http://blog.csdn.net/ns_code/article/details/17487337 Simple use of lock lock The new lock mechanism--java.util.concurrent.locks explicit mutex in Java 5: The Lock interface, which provides a more extensive

Conditional statement, which is a kind of statement that chooses to execute according to the condition in the program, the difficulty lies in how to abstract the condition accurately in the actual use of such statement. For example, to implement the

Functions and sample code of the if else statement in python Introduction: if-else is used to determine what to do if one condition is met, or else what to do. If-else statement syntax structure If condition: Code to be executed Else: Code to be

PHP Basics: describes PHP programming statements. The following describes the programming statements in the PHP programming language. 1. a simple statement contains at most one statement per line. for example, the following is the referenced content:

Yii2.0 Chinese development wizard-full resolution of Where condition query ,. Yii2.0 Chinese development wizard-Where condition query full resolution, where is essential when querying in the Yii Model. The Where method is declared as the parameter $

First, prefaceMany database system performance is not ideal because the systems are not overall optimized, there are a lot of low-performing SQL statements. The primary reason for the poor performance of such SQL statements is the lack of efficient

SQL means structured Query language, whose main function is to communicate with various databases. A query refers to a request for data stored in SQL. The task that the query completes is to provide the result set of the Select statement to the user.