Programmer Group

1. Executors Create Thread Pool 2. ThreadPoolExecutor class 3. ThreadPoolExecutor class extension   1. Executors Create Thread Pool Creating a thread pool in Java is easy, just call the corresponding convenient methods in Executors, such as Executors.newFixedThreadPool(), Executors.newSingleThreadExecutor(), Executors.newCachedThreadPool( ...

Use github OAuth for user login When doing the login function, you are allowed to use the identity of a third-party website, which is called "third-party login". principle Authentication methods within github Apply for OAuth App on github, go to your personal Github homepage, Settings->Applications->Developer application ...

This paper briefly introduces a kind of implementation of thermal repair, plug-in principle can also be referred to. Class Loader in Android System Android shields ClassLoader's findClass loading method, so how does it implement its own class loading? There are two classloaders in Android system: ...

Data Structure and Algorithms 1. Decomposition the sequence into separate variables problem Need to decompose the primitive and sequence of N elements into N separate variables Solution Using unpacking to decompose iterative objects >>> p = (4, 5) >>> a, b = p >>> a 4 ...

In my last article, I focused on the knowledge of async. There was little mention of promise. Now many interviews also require us to build wheels manually. So I will explore the characteristics of Promise by implementing a promise manually. Simple Promise First of all, we should know that Promise is created by a constructor (new Promise (execut ...

What is the heartbeat mechanism? Heartbeat is about how to keep the connection alive by sending a simplest package when the client and server establish ESTABLISH status with each other, and how to monitor the availability of services on the other side. The Role of Heart Packet Keep aliveQ: Why does heartbeat keep connections alive? It is ...

In general, we use asynchronous requests to exchange data, wait for the data to return and then call back to perform the required operations. The advantage of this method is that there is no need to block threads to wait for the result of the request. But in some special scenarios, we need to use syn ...

BZOJ 1176 [Balkan 2007] Mokia (cdq divide and conquer solution of three-dimensional partial order) Description Maintain a W*W matrix with initial values of S. Each operation can increase the weight of a lattice or ask for the total weight of a submatrix. Modify the operand M<=160000, Q<=10000, ...

Explain: .NET Core version: 2.2 AdminLTE version: 2.4.18 Bootstrap version: 3.4.1 font-awesome version: 4.7.0 1. New project using VS 2017: AdminLteDemo, add area Admin when finished Add files in the Areas/Admin/Views folder and add the following code separately, mainly for reference and page layouts, w ...

Through the following mind maps, learn the basic concepts of delegation, followed by an emphasis on the use of delegation, hoping to gain more knowledge in the simplest way. 1. Various ways of writing entrusted 1. Delegate delegate name = new delegate (method name that will be invoked); delegate name (parameter); 2. Delegate name = method ...