Programmer Think

1. Write before In the last section, we talked about the exclusive source code, see J.U.C|AQS Exclusive Source Analysis In this chapter, we continue to navigate the world of AQS source code to understand the acquisition and release of shared synchronization. 2. What is Shared The only difference between shared and exclusive is that multiple t ...

z-index attributes, although so much has been written, are still widely misunderstood and mishandled. Stacking problems in complex single-page web applications can become a major problem. Sticking to some principles, however, we can easily avoid these problems. If you've ever had any complex Web UI development, you might sometimes go crazy tryi ...

1. Create a mudule and publish it 1.1 $GOPATH/src directory structure 1.2 Environment Variables Need to add environment variable: GO111MODULE=on; This variable has three optional values: On (GoEnable this feature anywhere), off (disable this feature), auto (default, enabled elsewhere with GOPATH disabled) Otherwise console will output the ne ...

To introduce zanui-weapp, the following software must be installed: Node.js, Git, Bower 1:Node.Js Installation First download Node.js, website https://nodejs.org/en/ The stable version is recommended on the left and the latest version on the right. Node.js installation, running the downloaded. msi file, the next s ...

In the previous article, when we went to the layoutChunk method of the layout process of the sub-View, we used View view = layoutState.next(recycler); the method obtained the sub-View to be laid out, and then proceeded to follow up. Now let's see how this sub-View was obtained. View next(RecyclerView.Recycler recycler) { ...

android notification bar message click event if an activity is opened, we need to consider two situations: The application is running in the foreground. The application has exited. If it's the first case, it's handled. Set flag to FLAG_ACTIVITY_NEW_TASK for Intent directly, and then call the context.startActivity method. Flag ...

Class and instance Classes are abstract templates, and instances are concrete "objects" created according to classes. Terminology explanation Class: A collection of objects that describe the same properties and methods. It defines the properties and methods common to each object in the set. Objects are instances of ...

How to use data mining "flower choke" in the end should not be used? Based on Monte Carlo principle: If all the expenditure in that month is paid by the flower, when the arrears of the flower in that month are greater than the expendable income in that month, it will "eat dirt". _Budget design 120 months ...

kubernetes event reflector kubernetes event reflector ListWatcher interface ListWatch Implementing ListWatcher Interface Informer using ListWatch Reflector Reflector type definition Functions to create Reflector objects Run() method ListAndWatch() method controller using Reflector Run() method processLoop() metho ...

cause We always use redis of Aliyun. We are not a high concurrent application. We mainly use redis as distributed locks and a small amount of caches. It hardly needs maintenance. Yesterday afternoon, we suddenly received an alarm email. On-line redis memory is used 100% and instantaneous nerve tension sensation is confirmed by console.This is a ...