chvonrohr

// helper functions
const compose = (...fns) => x => fns.reduceRight((res, fn) => fn(res), x);

const tap = f => x => { f(x); return x; };
const trace = label => tap(console.log.bind(console, label + ':'));

// container helpers
const isFunction = fn => fn && Object.prototype.toString.call(fn) === '[object Function]';
const isAsync = fn => fn && Object.prototype.toString.call(fn) === '[object AsyncFunction]';

chvonrohr

// #1 - for
let images = [ 'test.jpg', 'dummy.gif' ];
for (let i = 0; i < allImgs.length; i++) {} // long
for (let i of allImgs) { } // short

// #2 - decimal base
1000000 === 1e6

// #3 - default parameters
volume = (l, w = 3, h = 4 ) => (l * w * h);

chvonrohr

// 123456789 -> 123,456,789
n.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");

chvonrohr

export function tryCatch({
  tryer,
  catcher
}) {
  return (props) => {
    try {
      return tryer(props);
    } catch (e) {
      return catcher(props, e.message);
    }

chvonrohr

export const conditionally = <Props, Result>(options: {
  if: (props: Props) => any;
  then: (props: Props) => Result | Result;
  else: (props: Props) => Result | Result;
}) => (props: Props) => {
  return options.if(props) ? options.then(props) : options.else(props);
};

chvonrohr

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  items: [
    {key: 1, title: "ONE"},
    {key: 2, title: "TWO"},
    {key: 3, title: "THREE"}
  ],

chvonrohr

import Ember from 'ember';
import {inject as controller} from '@ember/controller';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  myvar: '',
  
});

chvonrohr

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

chvonrohr

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

chvonrohr

import Ember from 'ember';

export default Ember.Controller.extend({

  queryParams: ['search'],
  search: '',

});