JavaSE basic syntax 2
operator Arithmetic operator Arithmetic operation symbols are +, -, *, |, &, + +—— 1. Addition operation (+): value + value; 2. Connection: String + string; String + numeric value. 3. + +, – arithmetic operation: x++; —> x=x+1; –x; —> x=x-1; In mixed operations: ++X and – X: x increases automatUTF-8...
Posted by sy-co on Wed, 27 Oct 2021 22:22:32 +0530
Spring boot integrates spring security to realize permission control: permission allocation
Catalogue of series articles SpringBoot integrates SpringSecurity to realize permission control (I): implementation principle SpringBoot integrates spring security to realize permission control (II): Design of basic model of permission data SpringBoot integrates SpringSecurity to achieve permisUTF-8...
Posted by MetaDark on Thu, 28 Oct 2021 05:38:56 +0530
PHP CURL implements single thread and multi thread methods
PHP uses Curl to complete various file transfer operations, such as simulating a browser to send GET, POST requests, and so on. However, because php language itself does not support multithreading, the efficiency of developing crawler programs is not high. Generally, phpQuery class can be used UTF-8...
Posted by kliopa10 on Thu, 28 Oct 2021 07:43:56 +0530
Spring Security control permissions
1, Meet spring security Spring Security is the security framework for the spring project and the default technology selection of the Spring Boot underlying security module. It can realize powerful Web security control. For security control, we only need to introduce the Spring Boot starter secuUTF-8...
Posted by garygay on Thu, 28 Oct 2021 09:21:29 +0530
To explore the core and underlying yuan code of JDK, it is necessary to master the usage of native
scene Students who want to explore should be like me. When looking at the JDK source code, at the end, there will be a native method, similar to the following method /** * Gets the platform defined TimeZone ID. **/ private static native String getSystemTimeZoneID(String javaHome); Copy code SeeUTF-8...
Posted by vikette on Thu, 28 Oct 2021 11:41:18 +0530
Django routing configuration - get started quickly
Django routing configuration - get started quickly The Django routing system configuration code is in urls.py, which is automatically generated when creating a project. It is generally in the project directory. Basic format of routing system URL The routes configured in the urls.py file are stoUTF-8...
Posted by allenmak on Thu, 28 Oct 2021 12:02:02 +0530
The basics of Java that you may not be familiar with
catalogue ● data type ● Boolean (knock on the blackboard!!!) ● string type ● splicing ● escape character ● variables and constants ● variables ● naming rules of variables ● scope of variable ● constant ● type conversion 1, Data type 1. Classification of data types 2. Size of data type This showUTF-8...
Posted by Superian on Thu, 28 Oct 2021 12:26:59 +0530
C + + template preliminary
Initial stage of formwork Generic Programming In the field of computer programming, in order to avoid being forced to repeatedly write a large number of codes with the same business logic due to different data types, people have developed generic and generic programming technology. What is geneUTF-8...
Posted by mustng66 on Thu, 28 Oct 2021 12:56:02 +0530
Station B dark horse c + + learning notes
1. First acquaintance 1.1 constants #define day 7 const int month 12; 1.2 keywords 2. Data type Data type: allocate appropriate memory space to variables 2.1 integer 2.2 sizeof keyword 2.3 real (floating point) float f1 = 3.14f; double d1 = 3.14; 2.4 character type 2.5 string type c Style: charUTF-8...
Posted by ify on Thu, 28 Oct 2021 14:14:51 +0530
Multithreading - thread pool
1. Thread pool status Status nameHigh 3 bitsAccept new tasksProcessing blocking queue tasksexplainRUNNING111YYSHOUTDOWN000NYNew tasks are not accepted, but the remaining tasks that block the queue are processedSTOP001NNThe executing task is interrupted and the blocking Queue task is discardedTIUTF-8...
Posted by ghazianibros on Thu, 28 Oct 2021 15:45:31 +0530