Functional Stuff

function add(x, y) {
  return x + y;
}

function toThe(pow) {
  return function(base) {
    return Math.pow(base, pow);
  };
}

function pipeline() {
  return [].reduce.bind(arguments, function(soFar, nextFn) {
    return nextFn(soFar);
  });
}

function lambda(func) {
  return function() {
    var args = [].slice.call(arguments, 0);
    return function(context) {
      return func.apply(context, args);
    };
  };
}

var mapBy = lambda([].map);
var reduceBy = lambda([].reduce);

function get() {
  var args = [].slice.call(arguments, 0);
  return function(obj) {
    return args.reduce(function(hash, nextKey) {
      return hash && hash[nextKey];
    }, obj);
  };
}


var getHits = get('hits', 'hits');
var getThumbnails = mapBy(get('_source', 'thumbnail'));
var forwardImages = pipeline(getHits, getThumbnails, callback);

$http.get(someEndopint).success(forwardImages);

var magnitude = pipeline(
  mapBy(toThe(2)),
  reduceBy(add, 0),
  Math.sqrt
);