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Sample config for 2 million web socket connection

    sysctl -w fs.file-max=12000500
    sysctl -w fs.nr_open=20000500
    # Set the maximum number of open file descriptors
    ulimit -n 20000000

    # Set the memory size for TCP with minimum, default and maximum thresholds 
 sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'

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{
    "workbench.iconTheme": "vs-minimal",
    "workbench.colorTheme": "Monokai",
    "files.trimTrailingWhitespace": true,
    "editor.multiCursorModifier": "ctrlCmd",
    "editor.formatOnPaste": true,
    "eslint.autoFixOnSave": true,
    "search.exclude": {
        "node_modules": true,
        "coverage": true,

pagewang0

import pyautogui

def find():
    for i in range(10):
          pyautogui.moveTo(300, 300, duration=0.25)
          pyautogui.moveTo(400, 300, duration=0.25)
          pyautogui.moveTo(400, 400, duration=0.25)
          pyautogui.moveTo(300, 400, duration=0.25)
          
find()

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// 成绩等级分为A、B和C三级
function getGrade(score) {
  return score < 60 ? 'C' :
    score < 80 ? 'B' : 'A';
};
// 学生及其成绩
let students = [
  { name: '张三', score: 84 },
  { name: '李四', score: 58 },
  { name: '王五', score: 99 },

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transform: {
  sfjjr: 'stockbroker',
  czdh: 'type'
}

const transform = (res) => {
  if (_.isArray(res)) {
    res.map(row => transform(row));
  }
  

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1
  var str = 'bdca'
  console.log(str.split(‘’).sort().join(‘’))

2
  var index, res = []
  var arr =  [1, 2, 3, 4, 5, 6, 7, 8, 9]
  var num = Math.floor(Math.random() * arr.length)
  
  for(var i=num;i>=0;i--){

pagewang0

var assert = require('assert')

function Node(){
  this.parent
  this.data
  this.next
  this.index
}

function sort(a, index, p){