Programmer Think

Concurrent programming synchronized What I said earlier As I said at the beginning, I want to sort out some learning documents of java Concurrent Programming. This is the third article: synchronized keyword. It mainly discusses the use of synchronized keywords, lock principle, lock reentry, dirty reading, lock upgrade and other issues. Welc ...

A safe way of communication needs to meet the following three conditions at the same time1. Integrity, that is, the message has not been tampered with halfway. 2. Confidentiality, which cannot be decrypted by a third party. 3. Authentication. The receiver of the message can determine who sent the message.Symmetric encryptionThe same key used by ...

More and more ROS contents are mixed in the cloud and fully support ROS2. The following suggestions are made on the ROS official website: For projects that support ROS1 and ROS2, when is it appropriate to move the default branch of GitHub from ROS1 to ROS2. Considering that Noetic will be released soon and the last version of ROS1 will be relea ...

The first official account is called "Yue". Today, I bring you new works, the original script of iOS14 desktop component artifact (Scriptable), and share exquisite works! Pay attention if you like! More scripts are on the way /******************************************************** * script : ONE-hotcomments.js * version ...

From: STM32 external interrupt experiment - EXTI Author: three speed sub20 Released on: October 19, 2020 13:51:42 website: https://blog.csdn.net/weixin_44234294/article/details/109154934 Introduction to STM32 external interrupt Each IO of STM32 can be used as an external interrupt Interrupt input port, which is also the strengt ...

1, Page element positioning and operation What are page elements: all elements that can be seen on the browser, such as pictures, text boxes, buttons, drop-down lists, videos, etc. What is automation? The code controls the elements on the browser and makes them "move" (execute according to the script design logic) Main steps of aut ...

There are usually three ways to deploy projects in weblogic: first, install and deploy in the console; Second, deploy the deployment package under the autodeploy directory in the domain domain; Third, use the configuration file config. In the domain XML for project deployment.   Console deployment   1. Start the weblogic service, log in to the ...

Million Chinese character annotation > > intensive reading kernel source code, Chinese annotation analysis, deep foundation engineering, permanent brain memory, and four code warehouses are updated synchronously every day< gitee | github | csdn | coding > One hundred blog Analysis > > story telling kernel, question and answer ...

Although Python does not have C/C + + pointers and various data type conversions, it does not mean that it does not have a smooth path. For beginners, when they lament the simplicity and power of python, they may fall into a trap accidentally. In order to warn the latecomers, various traps of Python are summarized to achieve the effect of &quot ...

Docker daily review (1): run Hello World smoothly on Win10 platform Task description Docker runs smoothly in Win10Successfully run docker container run Hello WorldUnderstand the logicUnderstand the difference between image and containerUnderstand the meaning of docker psUse help instructions to find the answer yourself process Install ...