iTonyYo

type Shoe = {
  purpose: string
}

type ShoeFactory = {
  create(t: 'boot'): Boot
  create(t: 'balletFlat'): BalletFlat
  create(t: 'sneaker'): Sneaker
  create(t: string): Boot
}

iTonyYo

/**
 * 二分查找有序数值列表
 * [1, 4, 10, 300, 5000000]
 *
 * Benchmark 结果，
 *
 * [1, 4, 10, 300, 5000000].findIndex((el) => el === 500);
 * 原生 x 95,827,672 ops/sec ±0.87% (88 runs sampled)
 *
 * findIndex(500, [1, 4, 10, 300, 5000000]);

iTonyYo

Markdown   8 mins         ███████████████████▌░  93.3%
Bash       0 secs         █▍░░░░░░░░░░░░░░░░░░░   6.7%

iTonyYo

CSS Layout Debugger

A tweet-sized debugger for visualizing your CSS layouts. Outlines every DOM element on your page a random (valid) CSS hex color.

One-line version to paste in your DevTools

Use $$ if your browser aliases it:

~ 108 byte version

iTonyYo

  //           /-> INSERT -> EQUAL
  //    EQUAL |           /-> EQUAL
  //           \-> DELETE |
  //                      \-> INSERT -> EQUAL

iTonyYo

If you haven’t worked with JavaScript in the last few years, these three points should give you enough knowledge to feel comfortable reading the React documentation:

• We define variables with let and const statements. For the purposes of the React documentation, you can consider them equivalent to var.
• We use the class keyword to define JavaScript classes. There are two things worth remembering about them. Firstly, unlike with objects, you don't need to put commas between class method definitions. Secondly, unlike many other languages with classes, in JavaScript the value of this in a method [depends on how it is called](https://developer.mozilla.org/en-US/docs/Web/Jav

iTonyYo

// List all files in a directory in Node.js recursively in a synchronous fashion
var walkSync = function(dir, filelist) {
  var fs = fs || require('fs'),
      files = fs.readdirSync(dir);
  filelist = filelist || [];
  files.forEach(function(file) {
    if (fs.statSync(dir + file).isDirectory()) {
      filelist = walkSync(dir + file + '/', filelist);
    }
    else {

iTonyYo

/*
Code examples from the article: S.O.L.I.D The first 5 priciples of Object Oriented Design with JavaScript
https://medium.com/@cramirez92/s-o-l-i-d-the-first-5-priciples-of-object-oriented-design-with-javascript-790f6ac9b9fa#.7uj4n7rsa
*/

const shapeInterface = (state) => ({
  type: 'shapeInterface',
  area: () => state.area(state)
})

iTonyYo

console.reset = function () {
  return process.stdout.write('\033c');
}

iTonyYo

git tag -am "annotation goes here" tagname_goes_here # cut a tag
git tag -d tagname_goes_here                         # burn it
git tag -am "annotation goes here" tagname_goes_here # cut another tag
git push --tags                                      # push tags to remote
git push origin :refs/tags/tagname_goes_here         # delete tag from remote