Java learning road 06 - logical structure trap

Architecture diagram suspension If only one logical judgment statement is connected, this statement will be connected with the nearest logical judgment statement, such as system. Out. Println ("none zero!") in the following example; Will be connected under the if structure, which is called suspension while(iter < 10) if(iter ...

Posted by rgermain on Sat, 04 Dec 2021 12:16:41 -0800

Network programming - UDP

1.UDP definition       UDP is also called user data protocol [connectionless protocol]       Advantages: the safety and reliability of data cannot be guaranteed       Disadvantages: low consumption and high efficiency 2. Classes and methods required by UDP based n ...

Posted by roopurt18 on Sat, 04 Dec 2021 12:14:56 -0800

Centos 7 binary deployment high availability Kubernetes v1.17.x

1, Basic description This blog post will demonstrate CentOS 7 binary installation of highly available k8s 1.17.x. compared with other versions, the binary installation method is not much different. 2, Basic environment configuration 2.1 host information OS role && hostname memory CPU Role Centos 7.6 k8s-master01 8G 4 core 192.16 ...

Posted by dearmoawiz on Sat, 04 Dec 2021 12:14:46 -0800

Process thread -- thread switching

Write in front   this series is written word by word, including examples and experimental screenshots. Due to the complexity of the system kernel, there may be errors or incompleteness. If there are errors, criticism and correction are welcome. This tutorial will be updated for a long time. If you have any good suggestions, welcome feedbac ...

Posted by slyte33 on Sat, 04 Dec 2021 12:12:11 -0800

Summary of error handling operators in Rust

1 Option and ResultOption < T > is used to indicate whether there is a value. When there is a value, it is Some(T); Otherwise, None.enum Option<T> { None, Some(T), }Result < T, E > is used to indicate whether an error has occurred. When no error has occurred, it is Ok(T); Otherwise, Err(E).enum Result<T, E> { ...

Posted by asolell on Sat, 04 Dec 2021 11:58:19 -0800

The server connects to alicloud Iot platform to issue instructions

brief introduction This routine issues the instruction for NodeMCU-ESP8266 to connect to alicloud Iot platform. In fact, it publishes messages for the specified device Topic to achieve the effect of control. Specifically, it publishes messages to the Topic of product / product details / Topic class list / object model communication / sys/gmvzw ...

Posted by nareshrevoori on Sat, 04 Dec 2021 11:41:50 -0800

Android development artifact: source code analysis of OkHttp framework

prefaceHTTP is our modern application network for exchanging data and media streams. Effective use of HTTP can save bandwidth and load data faster. Square's open source OkHttp network request is an efficient HTTP client. The previous knowledge was limited to the call of framework API. After contacting the actual work, I knew my lack of knowledg ...

Posted by jroscoe on Sat, 04 Dec 2021 11:34:33 -0800

Vue3+Element-Plus Homepage Aside Layout Design 24

1. Layout design effect of left menu   2. Left Menu Layout Analysis Menus are split into two levels and have a folding effect   3. Introduction to menu components used   Menu | Element Plus (gitee.io)   el-menu   The outermost layer of the entire left menu must be wrapped in a menu  el-submenu Level 1 Menu ...

Posted by lostprophetpunk on Sat, 04 Dec 2021 11:20:17 -0800

STM32F103C8T6 Porting uC/OS-III Based on HAL Library

1. Get uC/OS-III source code 1. Download on the official website Enter the download center of Micrium's official website: Micrium Software and Documentation - Silicon Labs Select the ST series and click View all STMicroelectronics.     2. Building stm32 hal Library Project Open stm32 cubeMX, select the chip stm32f103c8, configure the syst ...

Posted by hadingrh on Sat, 04 Dec 2021 11:13:47 -0800

Advanced application of PHP objects

1. Advanced application of PHP objects final keyword Final means "final" and "final"; The classes and methods modified by final are the "final version"; If there is a method, the format is: final class class name{ //... } Indicates that this class is no longer inherited and cannot have subclasses; If there ...

Posted by HuggieBear on Sat, 04 Dec 2021 11:10:40 -0800