New Twiddle

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  enabled: false,
  trueValue: 'T',
  falseValue: 'F'
});

application.template.hbs

<h1>concat with inline if</h1>

T:{{input value=trueValue}}<br />
F:{{input value=falseValue}}<br />

<hr />
toggle: {{input type="checkbox" checked=enabled}}<br />
{{concat 'the answer is:' (if enabled trueValue falseValue)}}


<br>
<br>

twiddle.json

{
  "version": "0.5.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}