title: ng-if or ng-checked matching from comma separated value
body: <p>I have following HTML</p>
  
  <pre><code>&lt;!doctype html&gt;
  &lt;html lang="en"&gt;
  &lt;head&gt;
  &lt;meta charset="UTF-8"&gt;
  &lt;title&gt;Example - example-ngModel-getter-setter-production&lt;/title&gt;
  &lt;script src="//ajax.googleapis.com/ajax/libs/angularjs/1.4.0/angular.min.js"&gt;&lt;/script&gt;
  &lt;script src="app.js"&gt;&lt;/script&gt;
  
  &lt;/head&gt;
  &lt;body ng-app="getterSetterExample"&gt;
  &lt;div ng-controller="ExampleController"&gt;
  &lt;form name="userForm"&gt;
  
  &lt;label ng-repeat="id in ids"&gt;
      &lt;input type="checkbox" 
             value="{{id.id}}"
             ng-checked="id.id == csv"&gt; {{id.id}}
  &lt;/label&gt;
  
  &lt;/form&gt;
  &lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>And the controller is</p>
  
  <pre><code>(function(angular) {
    'use strict';
   angular.module('getterSetterExample', []).controller('ExampleController', ['$scope', function($scope) {
  
   $scope.csv = '5,6,76,78';
   $scope.ids = [
      {id:5},
      {id:64},
      {id:456},
      {id:47},
      {id:767},
      {id:78},
      {id:55},
      {id:98}
  ];
  
   }]);
  })(window.angular);
  </code></pre>
  
  <p>I want the checkbox checked when id found in csv. For example id 5 and 78 is in csv so these two values checkbox should be selected initially</p>
  
  <p>Here it is <a href="http://plnkr.co/edit/XoW4hARWlzN5iTMuCJW1">http://plnkr.co/edit/XoW4hARWlzN5iTMuCJW1</a></p>