albertywu

// quicksort sorting algorithm, in 2 lines of code

let quicksort = ([a, ...as]) => {
    if (a == null) return as
    return quicksort(as.filter(x => x <= a))
      .concat([a])
      .concat(quicksort(as.filter(x => x > a)))
}
    
let test1 = [5,1,2,3,5,6];

albertywu

abstract class AngularShim extends React.Component<Props, State> {
  private _div
  public state = {
    scope: null
  }

  componentWillMount() {
    const scope = Object.assign($rootScope.$new(true), { props: this.props }, this.getScopeMethods())
    this.setState({scope})
  }

albertywu

// Drag n Drop, using streaming paradigm
const fromEvent = Rx.Observable.fromEvent
const widget = document.getElementById('widget')
const container = document.getElementById('container')

// streams
const mouseDowns = fromEvent(widget, 'mousedown')
const mouseUps = fromEvent(container, 'mouseup')
const mouseMoves = fromEvent(container, 'mousemove')

albertywu

merge

[s1] ----a-----b--c---->
[s2] o----------------->
   s3 = s1.merge(s2)
[s3] o---a-----b--c---->

startsWith, merge

albertywu

// Place your settings in this file to overwrite the default settings
{
  "filePicker.alternateFileNameMatching": true,
  "editor.fontLigatures": true,
  "editor.fontFamily": "Fira Code",
  "editor.fontSize": 15,
  "editor.lineHeight": 22,
  "editor.tabSize": 2,
  "editor.wrappingColumn": -1,
  "editor.formatOnType": true,

albertywu

// Place your key bindings in this file to overwrite the defaults
[
  { "key": "shift+cmd+-",           "command": "workbench.action.openPreviousEditor" },
  { "key": "shift+cmd+=",           "command": "workbench.action.openPreviousEditor" },
  { "key": "shift+cmd+-",           "command": "workbench.action.quickOpenNavigatePrevious",
                                    "when": "inQuickOpen" },
  { "key": "shift+cmd+=",           "command": "workbench.action.quickOpenNavigateNext",
                                    "when": "inQuickOpen" },
  { "key": "shift+cmd+[",           "command": "editor.foldLevel2",
                                    "when": "editorFocus" },

albertywu

class Peribot
  constructor: (robot) ->
    @cache = null
    @robot = robot
    @robot.brain.on 'loaded', => # ... set up @cache
    @listen() # sets up robot listeners

  add: (user_or_hashtag) -> # ...

  remove: (user_or_hashtag) -> # ...

albertywu

sniffer = require('twitter-sniffer')({ # TODO: implement module
  consumer_key:         '...', # TODO: add key
  consumer_secret:      '...', # TODO: add key
  access_token:         '...', # TODO: add key
  access_token_secret:  '...'  # TODO: add key
})

SNIFF_PHRASE = "Live on #Periscope"

albertywu

class Rational(x: Int, y: Int) {
  
  // private method  
  private def gcd(x: Int, y: Int): Int = if (y == 0) x else gcd(y, x % y)
  
  // private value
  private val g = gcd(x, y)
  
  // accessor methods
  def numer = x / g // normalize using gcd

albertywu

class Tree {
  
  constructor(value, children = []) {
    this.value = value
    this.children = children
  }

  isLeaf() {