alvachien

	view: Array<number> = [];
constructor(private media: ObservableMedia) {}
	ngOnInit() {
  this.media.asObservable()
  .pipe(takeUntil(this.ngUnsubscribe))
  .subscribe((change: MediaChange) => {
    this.changeGraphSize();
  });
  this.changeGraphSize();
}

alvachien

	class myComponent {
  private destroyed$: ReplaySubject<boolean> = new ReplaySubject(1);
	constructor(
    private serviceA: ServiceA,
    private serviceB: ServiceB,
    private serviceC: ServiceC) {}
	ngOnInit() {
    this.serviceA
      .takeUntil(this.destroyed$)
      .subscribe(...);

alvachien

//
// Array related functions
//

function eliminateDuplicates(arr) {
  var i,
      len=arr.length,
      out=[],
      obj={};

alvachien

//
// Date related functions
//

function isLeapYear(year) {
	return (year % 400 == 0) || (year % 4 == 0 && year % 100 != 0);
}

function getLastDay(year, month) {
	var new_year = year; 

alvachien

/**
 * System configuration for Angular 2 app
 * Reference: https://github.com/angular/quickstart
 */
(function (global) {
    System.config({
        paths: {
            // paths serve as alias
            'lib:': 'libs/js/'
        },