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Go language -- detailed explanation of slice Blog description The information involved in this article comes from Internet collation and personal summary, which means personal learning and experience summary. If there is any infringement, please contact me to delete, thank you! Explain Go language slicing is an abstraction of arrays. The leng ...

Download the tar of mysql binary installation file, and place the GZ package in / usr/local / Run script file #!/bin/bash function Cuser { groupadd -g 27 -o -r mysql useradd -M -N -g mysql -o -r -d /usr/local/mysql/data -s /bin/false -c "MySQL Server" -u 27 mysql } function file-tar { cd /usr/local/ ...

kubernetes cluster deployment Three official deployment methods1.minikubeminikube is a tool that can run a single point of kubernetes quickly locally, only for testing K8S or daily developmentDeployment address: https://kubernetes.io/docs/setup/minkube/2.kubeadmKubeadm is also a tool that provides kubeadm init and kubeadm join for rapid deploy ...

11, Application practice of for loop statement (1) , for loop syntax 1) General grammar for variable name in variable value list do Command... done 2) c-type for loop syntax for(( exp1;exp2;exp3)) do Command... done (2) Example 1 Use for to print 1, 2, 3, 4 and 5 numbers vertically. [root@centos6-kvm3 scripts]# cat 11-01.sh #!/bin/bash ...

What's the difference between having synchronized or not? What does synchronized lock as a pessimistic lock? How to use synchronized code block In the previous three articles, we talked about two uses of synchronized: synchronization method and synchronization code block, as well as two lock mechanisms: Lock instance object and lock Class obj ...

6. Conditional testing and comparison of shell scripts (1) Common syntax for conditional expressions 1. Six ways to write conditional expressions (if, while) Syntax 1:test<test expression> Syntax 2: [<Test Expression>] #Both ends of brackets must have spaces Syntax 3: [[[<Test Expression>] #Spaces are required at both ends Syn ...

#Problem encountered: App currently being developed has a problem: When an interface is requested, it will fail because the token is no longer valid.However, the product manager expects the app to refresh the token immediately and then repeat the request for the interface, which is insensitive to the user.>This means silent automatic login a ...

Global configuration 1.app.js Define global data and global functions Definition explanation: onLanuch when the initialization of the applet is completed, onLaunch will be triggered (only once in the global) onShow when the applet starts or enters the foreground display from the background, onShow will be triggered onHide when an appl ...

What's the difference between having synchronized or not? What does synchronized lock as a pessimistic lock? In the previous two articles, we have known how to use synchronized and the content of lock (instance object and Class object), which has covered the basic content of this keyword. Today, I want to introduce another writing method, whi ...

1, Foreword The last work is made by the ffmpeg kernel. Because ffmpeg is too powerful, many beginners will see the state of confusion. There are also many users who only need a simple video stream to play, which does not need to involve the decoding and transcoding. So vlc came on the stage. It directly encapsulates ffmpeg in depth and provid ...