New Twiddle

components.my-component.js

import Ember from 'ember';

let i;

export default Ember.Component.extend({
  data: {},

  init() {
  	this._super(...arguments);
    
    let msg = this.get('data.message');
    
    if (!msg) {
      msg = 'Hello Harold';
      this.set('data.message', msg);
    } else {
      this.set('isFromCache', true);
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  arr: [1,2,3]
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}

{{#each arr as |temp|}}
	{{my-component}}
{{/each}}
<br>
<br>

templates.components.my-component.hbs

{{yield}}
<b>{{if isFromCache "from cache" "not from cache"}}</b> - {{data.message}} 

twiddle.json

{
  "version": "0.11.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.2",
    "ember-data": "2.11.0",
    "ember-template-compiler": "2.10.2",
    "ember-testing": "2.10.2"
  },
  "addons": {}
}