function set(object, path, value) {
	      if (object == null) {
	        return object;
	      }
	      var pathKey = (path + '');
	      path = (object[pathKey] != null || isKey(path, object)) ? [pathKey] : toPath(path);

	      var index = -1,
	          length = path.length,
	          lastIndex = length - 1,
	          nested = object;

	      while (nested != null && ++index < length) {
	        var key = path[index];
	        if (isObject(nested)) {
	          if (index == lastIndex) {
	            nested[key] = value;
	          } else if (nested[key] == null) {
	            nested[key] = isIndex(path[index + 1]) ? [] : {};
	          }
	        }
	        nested = nested[key];
	      }
	      return object;
	    }
Sets the property value of `path` on `object`. If a portion of `path`
does not exist it is created.

@static
@memberOf _
@category Object
@param {Object} object The object to augment.
@param {Array|string} path The path of the property to set.
@param {*} value The value to set.
@returns {Object} Returns `object`.
@example

var object = { 'a': [{ 'b': { 'c': 3 } }] };

_.set(object, 'a[0].b.c', 4);
console.log(object.a[0].b.c);
// => 4

_.set(object, 'x[0].y.z', 5);
console.log(object.x[0].y.z);
// => 5