Dev Tools - Birost

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(4) EurekaClient-timed task initialized at startup

0. Preface springboot version: 2.1.9.RELEASE springcloud version: Greenwich.SR4 1. Initialize a scheduled task When the client starts, it will initialize the timing task. The method entry is mentioned in "EurekaClient-Pull Registry" // DiscoveryClient.class DiscoveryClient(ApplicationInfoManager applicationInfoManager, EurekaClientConfig config, AbstractDiscoveryClientOptionalArgs args, Provider<BackupRegistry> backupRegistryProvider, EndpointRandomizer endpointRandomizer) { // ...... try

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Video: Stan Probabilistic Programming MCMC Sampling Bayesian Model in R

Original link: tecdat.cn/?p=11161 Original source: Tuoduan Data Tribe Official Account   Probabilistic programming allows us to implement statistical models without worrying about technical details. This is particularly useful for Bayesian models based on MCMC sampling.  RStan Bayesian hierarchical model analysis example in R language Introduction to stan Stan is a C++ library for Bayesian inference. It is based on the No-U-Turn sampler (NUTS), which is used to estimate the posterior d

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In-depth explanation of the sending and receiving of linux network packets

This article has participated in the Haowen Convening Order activity, click to view: Back-end, big front-end dual-track submissions, 20,000 yuan prize pool waiting for you to challenge! Friendly reminder, this article is a bit longer, you can read Mark first! Today, we will give an in-depth explanation on the sending and receiving of Linux network packets. Let's try our proposal to write a simple sample code of udp socket as follows: int main () { int serverSocketFd = socket(AF_INET, SOCK_DGRAM,

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(Essence) Basic configuration of nginx on August 18, 2020

Install nginx under windows My local environment: win10-64 bit. Download nginx to the nginx official website to download the corresponding installation package, nginx.org/en/download... Download and decompress, put the decompressed files in your favorite directory, and place my decompressed files in the root directory of Disk D, as shown in the following figure: Configuration Enter the cmd window of the window, enter the command as shown in the figure below, enter the nginx directory (D:/nginx-1

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JavaScript reference data types

Object Objects are separated by curly braces. Inside the brackets, the properties of the object are defined in the form of name and value pairs (name: value), also called json. The attributes are separated by commas, and spaces and line breaks are not important. The statement can span multiple lines. Define an object, name: Keafmd, age: 18, address: Beijing, isEdu: false Sample code: var Ke = { 'name':'Keafmd', 'age': 18, address:'Beijing', isEdu:false } console.log(Ke) Copy code Complete code:

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how webgl draws a rectangle

There are many ways to draw rectangles. The following is my summary of 5 drawing methods. The drawing of the rectangle is based on the triangle. So the code hasn't changed much. The only difference is that the number of vertices required is different when constructing the data. Vertex shader code <script id= "vertexShader" type= "x-shader/x-vertex" > //attribute declares vec3 type variable apos attribute vec3 apos; void main () { //Assign vertex coordinates apos to the built-in variable gl

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Source code analysis-13 global APIs in Vue3

This article has a total of 5314 words, and the expected reading time is 5-15 minutes. Preface Unknowingly , the version of Vue-next has come to 3.1.2. Recently, I learned the global Api of Vue3 against the source code. I sorted it out while learning. I hope I can make progress with everyone. Let's take a look at them in three dimensions: official definition, usage, and source code analysis. The following is about the Vue3 global Api. If you have a better understanding and ideas, you can leave

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I use a calculator every day. Have you ever considered how to implement it with code? See how I can make a calculator with Unity

Recommended reading CSDN homepage GitHub open source address Unity3D plugin sharing Short book address My personal blog QQ group: 1040082875 I. Introduction Hello, meet again, today I will share how to use Unity to make a calculator. The difficulty is medium. It can be used for learning or imported as a small component of other projects. Of course, it can also be exported and published to the web page to be an embedded tool. Two, renderings and source engineering Effect picture: Source project:

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Java multithreading advanced JUC

Java multithreading advanced JUC JUC refers tojava.util.concurrentThis package is used for multi-threaded development ReentrantLock: used to replace Synchronized Only one thread can access the critical section at the same time, regardless of whether it is read or written Used to replacesynchroizedKeywords, how to use Create a ReentrantLock variablereentrantLock Then add above and below the code segment that needs to be synchronizedreentrantLock.lock()withreentrantLock.unlock() package kehao.thre

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The usage of (class) class in es6

basis es6 introduced the concept of Class. The new class writing makes the writing of object prototypes clearer, more like the syntax of object-oriented programming, and easier to understand. In fact, the concepts of prototype and constructor are still used behind the scenes. Strict mode does not need to use use strict because as long as the code is written in classes and modules, only strict mode can be used. There is no variable promotion in the promotion class (because of inheritance, you mus

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Boost.Asio technical documentation

Article source: blog.csdn.net/henreash/ar... | Boost.Asio is a cross-platform network and underlying IO C++ programming library. It uses modern C++ techniques to implement a unified asynchronous call model. head File#include <boost/asio.hpp> Name space ``` using namespace boost::asio; | ------------------------------------------------- -------------------------------------------------- -------------------------------------------------- --------------------------------------- | Christopher

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16. Promise Object (Introduction to ES6-Ruan Yifeng)

The meaning of Promise Promise is a solution for asynchronous programming, which is more reasonable and more powerful than traditional solutions callback functions and events. It was first proposed and implemented by the community. ES6 wrote it into the language standard, unified usage, and provided nativelyPromiseObject. So-calledPromise, Simply put, it is a container that holds the result of an event (usually an asynchronous operation) that will end in the future. Syntactically speaking, a Pro

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Implement Redux one by one

Preface I remember that when I first came into contact with state management, the first one was redux. It was all brand new terms at the time:reducer, state, dispatch, middleware, store Wait, I understand a state, because react has the concept of state. Let s start with state management and implement it step by stepredux. State manager Simple state management redux is a state manager. What is status? In simple terms, state is data, such as the count of a counter. let state = { count : 1 } // use

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Linux commonly used methods of privilege escalation ( ) penetration testing

Article Directory Introduction Summary of commonly used commands Drone environment Linux privilege escalation method Linux privilege escalation vulnerability exploitation Dirty COW CVE-2016-5195 vulnerability CVE-2019-7304 vulnerability CVE-2019-13272 vulnerability CVE-2021-3156 vulnerability Linux environment variables File special permission utilization View hidden files sudo permission abuse Timed task escalation Write the parameters in the file name Low-privilege access to network file syste

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Data structure and algorithm--binary tree

tree Before we talk about binary trees, let s first understand what a tree is Definition of tree The tree is a very important data structure in our computer. At the same time, using the data structure of the tree can describe many things in real life, such as family tree, organizational structure of the unit, and so on. A tree is a set of hierarchical relationships composed of n (n>=1) finite nodes. It is called a "tree" because it looks like an upside-down tree, which means that it has its r

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Front-end Micro Weekly Issue 12: Chrome supports custom status pseudo-classes; Bootstrap 5 is released; Rome founders establish Rome Tools, lnc

"Front-end Micro Weekly" is updated every Friday, bringing you a different front-end weekly experience WeChat search and subscribe to the "Front-end WeChat" public account Due to the official account rules, the links in the text can only be opened on the "View Original" page Cold knowledge Many people may not know,Math.min()withMath.max()The value of is not the same as expected. Information Founder of RomeRome Tools, lnc Rome is a supportJavaScript,TypeScript,JSON,HTML,MarkdownwithCSSLinguistic

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R language MCMC: Metropolis-Hastings sampling for Bayesian estimation of regression

Original link: tecdat.cn/?p=19664  Original Source: Topend Data Tribe   MCMC is a general technique for sampling from complex probability models. Monte Carlo Markov chain Metropolis-Hastings algorithm problem If you need to calculate the average or expected value of the function f( ) of the random variable with complex posterior pdf p( | y).   You may need to calculate the maximum value of the posterior probability distribution p( ).   One way to solve the expected value is t

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[Video] Python and R use exponential weighted average (EWMA), ARIMA autoregressive moving average model to predict time series

Original link: tecdat.cn/?p=21773 Original source: Tuoduan Data Tribe Official Account video Establish EWMA and ARIMA model to predict time series in Python and R language   Overview Learn the steps to create a time series forecast Pay attention to Dickey-Fuller test and ARIMA (autoregressive moving average) model Learn these concepts theoretically and their implementation in python   Introduction Time series (referred to as TS from now on) is considered one of the lesser-known skills

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14. Vue 2.0 two-way binding principle

premise There are many ways to achieve two-way binding. Vue adopts data holding combined with publish and subscribe design mode to achieve. Use Object.defineProperty() to hijack the setter and getter of each property, publish a message to subscribers when the data changes, and trigger the corresponding listener callback. Object.defineProperty() introduction Function: A more popular way of saying is to manipulate object properties Official: Define a new property directly on an object, or modify a

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After Effects CC SDK User Guide (5)-Chapter Two Basics of Effects (2)

Chapter 2 Basics of Effects Links to other articles sequence Chapter 1 Introduction on under Chapter 2 Basics of Effects 1 2 PF_OUTDATA use PF_OutDataPass the changes made by the plug-in to After Effects. The effective time to change these fields will be recorded. Table 6: PF_OUTDATA Field namedescriptionmy_versionPut this flag (using PF_VERSIONMacro) is set to the version of the plug-in code. After Effects uses this data to determine which duplicate effect to load.nameUnusedglobal_dataWill be c

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