code: function every(collection, predicate, guard) {
      predicate = guard ? undefined : predicate;
      return baseEvery(collection, baseIteratee(predicate));
    }
docs: /*------------------------------------------------------------------------ 
  Checks if `predicate` returns truthy for **all** elements of `collection`.
  Iteration is stopped once `predicate` returns falsey. The predicate is
  invoked with three arguments: (value, index|key, collection).
  
  @static
  @memberOf _
  @since 0.1.0
  @category Collection
  @param {Array|Object} collection The collection to iterate over.
  @param {Array|Function|Object|string} [predicate=_.identity]
  The function invoked per iteration.
  @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
  @returns {boolean} Returns `true` if all elements pass the predicate check,
  else `false`.
  @example
  
  _.every([true, 1, null, 'yes'], Boolean);
  // => false
  
  var users = [
  { 'user': 'barney', 'age': 36, 'active': false },
  { 'user': 'fred',   'age': 40, 'active': false }
  ];
  
  // The `_.matches` iteratee shorthand.
  _.every(users, { 'user': 'barney', 'active': false });
  // => false
  
  // The `_.matchesProperty` iteratee shorthand.
  _.every(users, ['active', false]);
  // => true
  
  // The `_.property` iteratee shorthand.
  _.every(users, 'active');
  // => false