Programmer Think

APIJSAON (I: Introduction)backgroundDue to various wonderful abbreviations, chaotic naming, outdated documents, out of sync with interfaces, unstable or arbitrary changes of data types, hundreds or even thousands of chaotic status codes, all kinds of wrangling between the front end and the back end, cumbersome whole development process, long de ...

Heap topK problem - heap sorting The concept of heap ❓ To represent a binary tree with the child's representation (a common representation for brushing questions) is essentially a chain storage. In fact, there is also a sequential storage for the storage of binary trees. To put it bluntly, take an array to store a binary tree, and the way to ...

Arthas online analysis, diagnosis and tuning tool In the past, when we wanted to troubleshoot online problems, we usually used the tuning tools and commands provided by jdk. The most common is the dump online log, which is then downloaded locally and imported into the jvisual VM tool. There are many changes in this operation. The Arhtas tool d ...

Day4: enter, if, switch When implementing branch judgment, a good habit is to put the judgment with high matching success rate in front, which can improve efficiencyIn the expression judgment, we try to use the determined value to judge with the uncertain value Execution process in the program: Sequencing: starting from the main method ...

First at ~ / go / SRC / GitHub Compile order and peer under COM / hyperledger / fabric Compile Orderer $ cd $GOPATH/src/github.com/hyperledger/fabric/ $ make orderer After the command is executed, the terminal output is as follows: Compile peer $ make peer After the command is executed, the terminal output is as follows: Compile ...

1. Overview: (1) What is event entrustment? It also has a name called event agent In terms of JavaScript Advanced Programming: event delegation is to use event bubbling and specify only one event handler to manage all events of a certain type. What does that mean? The leaders on the Internet basically use the same example of event entrustment ...

RxJS is a responsive library. It receives events from the event source. After layer by layer processing of the processing pipeline, it is transmitted to the final receiver. This processing pipeline is composed of operators. Developers only need to select and combine operators to complete various asynchronous logic, which greatly simplifies asyn ...

The biggest difference between before and after React 16 is that 16 introduces fiber and implements hooks based on fiber. I mention fiber all day. What is fiber? What is its relationship with vdom?Instead of looking at various explanations, it's better to write a fiber version of React. When you can realize it, you must fully understand it.vdom ...

catalogue 1, System introduction 1. Development environment 2. Technical selection 3. System functions 4. Database files 5. System screenshot 2, System display 1. Log in to the system 2. System home page 3. New pets​ 4. Modify pets 3, Partial code AdminDaoImpl PetDaoImpl pet-add.jsp pet-add-do.jsp pet-update.jsp pet-update-d ...

I New package (1). Perfect page The new package is divided into two parts: the first is the basic information of the package, and the second is the information of the inspection group associated with the package Among them, the new package is different from that of the previous inspection item inspection group, and the function of uploading ...