Create an instance of an object from a String in Dart?

The Dart code:

ClassMirror c = reflectClass(MyClass);
InstanceMirror im = c.newInstance(const Symbol(''), ['MyAttributeValue']);
var o = im.reflectee;

Learn more from this doc: http://www.dartlang.org/articles/reflection-with-mirrors/

(From Gilad Bracha)