detecting if action is passed in

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  onGo: Ember.K,
  passed: Ember.computed(function() {
    return this.get('onGo') !== Ember.K;
  }),
  click() {
    console.log('clicked on my-compoent, now calling action passed');
    this.get('onGo')();
	}
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  actions: {
    go() {
      console.log('gooo');
    }
  }
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{my-component}}
{{my-component onGo=(action 'go')}}
<br>
<br>

templates.components.my-component.hbs

{{yield}}
inside component
{{passed}}

twiddle.json

{
  "version": "0.10.7",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.0",
    "ember-data": "2.10.0",
    "ember-template-compiler": "2.10.0",
    "ember-testing": "2.10.0"
  },
  "addons": {}
}