Wait multiple http responses AngularJS recipe

Using $q’s function ‘all’:

function giftControler ($scope, $http, $q) {
  var names = $http.get("names.json"),
      naughty = $http.get("naughty.json"),
      nice = $http.get("nice.json");
  $q.all([names, naughty,nice]).then(function(arrayOfResults) { 
      ... This callback would be called when all promised would be resolved
    });

Vía:
http://stackoverflow.com/questions/14545573/angular-accessing-data-of-multiple-http-calls-how-to-resolve-the-promises
https://docs.angularjs.org/api/ng/service/$q

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