Promises Example 2

promises

var allTheXmlsYay = [];

function getXML(url) {
  var d = $q.defer();
    
    d3.xml(url, 'image/svg+xml' function(xml) {
      // If error variable is present
      // if(err) d.reject(err);
      
      d.resolve(xml);
    });
    
  return d.promise;
}
  
  var promises = icons.map(function(icon) {
    // This will return the promise associated with getting this icon
    return getXML('someUrl' + icon);
  });
  
  // At this point, var promises is an array of promises for all your icons
  
  $q.all(promises)
  .then(function(XMLArray) {
    //XMLArray is an array of all the resolved XML's
    // Only continue on here once allTheXmlsYay is full
    // So you might call the next continuation function here
  }, function(err) {
    // Comes here if any of the promises called d.reject();
    // Can handle the error appropriately
  });