khoahuynhdev

style>
.heart {
  position: absolute;
  margin: auto;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: pink;
  height: 50px;

khoahuynhdev

// Pseudo Jquery
const $ = document.querySelector.bind(document);
const $$ = document.querySelectorAll.bind(document);

// convert a number in decimal to binary
8..toString('2') // '1000'

khoahuynhdev

MySQL

Getting started

• http://www.sqlteaching.com/
• https://www.codecademy.com/learn/learn-sql

Related tutorials

• MySQL-CLI
• Analyzing Business Metrics
• SQL joins infografic

khoahuynhdev

const util = require('util')
const mysql = require('mysql')
const pool = mysql.createPool({
    connectionLimit: 10,
    host: 'localhost',
    user: 'root',
    password: 'password',
    database: 'my_database'
})

khoahuynhdev

// If you’ve accidentally checked in node_modules before, that’s okay. You can remove it like this:
echo 'node_modules' >> .gitignore
git rm -r --cached node_modules
git commit -am 'ignore node_modules'

// create dump data for mysql
// SET PATH FIRST
mysqldump -u YourUser -p YourDatabaseName > wantedsqlfile.sql

// Use utf8 in CMD Windows

khoahuynhdev

var fs = require('fs');
var https = require('https');
var express = require('express');

var app = express();
var options = {
  key: fs.readFileSync('./file.pem'),
  cert: fs.readFileSync('./file.crt')
};
var serverPort = 443;

khoahuynhdev

axios({
  url: 'http://localhost:5000/static/example.pdf',
  method: 'GET',
  responseType: 'blob', // important
}).then((response) => {
  const url = window.URL.createObjectURL(new Blob([response.data]));
  const link = document.createElement('a');
  link.href = url;
  link.setAttribute('download', 'file.pdf');
  document.body.appendChild(link);

khoahuynhdev

Remove MySQL completely

1. Open the Terminal

2. Use mysqldump to backup your databases

3. Check for MySQL processes with: ps -ax | grep mysql

4. Stop and kill any MySQL processes

5. Analyze MySQL on HomeBrew:

brew remove mysql

khoahuynhdev

function! s:corona_stats() abort
  let l:lines = []
  let l:keys = [
  \ ['country', 'Quốc gia'],
  \ ['cases', 'Số ca'],
  \ ['todayCases', 'Số ca (hôm nay)'],
  \ ['deaths', 'Tử vong'],
  \ ['todayDeaths', 'Tử vong (hôm nay)'],
  \ ['recovered', 'Hồi phục'],
  \]

khoahuynhdev

1. Separation of immutable and mutable logic

Quite a lot of different people have been on the same trail of thought. Gary Bernhardt's formulation of a "functional core, imperative shell" seems to be the most voiced.

"Boundaries" - Gary Bernhardt

"Imperative shell" that wraps and uses your "functional core".. The result of this is that the shell has fewer paths, but more dependencies. The core contains no dependencies, but encapsulates the different logic paths. So we’re encapsulating dependencies on one side, and business logic on the other side. Or put another way, the way to figure out the separation is by doing as much as you can without mutation, and then encapsulating the mutation separately. Functional core — Many fast unit tests. Imperative shell — Few integration tests

https://www.youtube.com/watch?v=yTkzNHF6rMs