New Twiddle

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  myArrayOne: ['a', 'b', 'c', 'd'],
  myArrayTwo: ['A', 'B', 'C', 'D'],
});

templates.application.hbs

{{! Works with hardcoded number index !}}
<ul>
{{#each myArrayOne as |value index|}}
	<li>{{value}} : {{myArrayTwo.[0]}}</li>
{{/each}}
</ul>

{{! Does NOT work with index variable :( !}}
<ul>
{{#each myArrayOne as |value index|}}
	<li>{{value}} : {{get myArrayTwo.[index]}}</li>
{{/each}}
</ul>

{{! Does NOT work with get helper either !}}
<ul>
{{#each myArrayOne as |value index|}}
	<li>{{value}} : {{get myArrayTwo index}}</li>
{{/each}}
</ul>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}