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Interview Questions

Table of Contents

1. Wello Airdrop
2. Combine Transactions
3. Stablecoin Acquiring

1. Wello Airdrop

Overview

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Gist

https://gist.github.com/noru/0786b119f324c33a4925447a8ec1fec6

变量

下面操作如用到相应值在此列表中查询并替换

---

变量名	值	描述
CashierHost	vercel.xiuz.hu/topup	收银台网址
BFPayHost	43.156.177.238:17083	BFPay平台网址
ServiceHost	ec2-54-153-74-136.us-west-1.compute.amazonaws.com:3001	后台网址

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alias d='docker'
alias db='docker build'
alias dr='docker run -itd'
alias da='docker attach'
alias dp='docker ps'

alias g='git'
alias gp='git pull --rebase'
alias gb='git branch'
alias gs='git stash'

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• Use curl to get the JSON response for the latest release
• Use grep to find the line containing file URL
• Use cut and tr to extract the URL
• Use wget to download it

curl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \

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{
  "compilerOptions": {
    /* Basic Options */
    "target": "es5",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', or 'ESNEXT'. */
    "module": "esnext",                     /* Specify module code generation: 'commonjs', 'amd', 'system', 'umd' or 'es2015'. */
    "lib": [
      "es5",
      "es2015",
      "dom",
      "dom.iterable",

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{
    "defaultSeverity": "error",
    "extends": [
        "tslint:recommended"
    ],
    "jsRules": {
      "variable-name": [
        true,
        "check-format",
        "allow-leading-underscore",

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/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number}
 */
var searchInsert = function(nums, target) {
    
    let start = 0
    let end = nums.length - 1
    if (nums[end] < target) {

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{
  class BinaryHeap {


  constructor() {
    this.data = []
  }

  insert(element) {
    this.data.push(element)

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10 Code Smells

• Side effects
• Readability
• Nested ifs
• Duplicated Code
• Long class/method/function/whatever
• Stale comments
• Circular Dependencies
• Too many parameters

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Modes

Vim has two modes insertion mode and command mode. The editor begins in command mode, where the cursor movement and text deletion and pasting occur. Insertion mode begins upon entering an insertion or change command. [ESC] returns the editor to command mode (where you can quit, for example by typing :q!). Most commands execute as soon as you type them except for "colon" commands which execute when you press the ruturn key.

Quitting

• :x Exit, saving changes
  
• :q Exit as long as there have been no changes
  
• ZZ Exit and save changes if any have been made
  
• :q! Exit and ignore any changes
  

Inserting Text