dart - How to tell if an object is an instance of a class

Question

How can I determine whether an object is of a class or not in the Dart language?

I'm looking to do something like the following:

if (someObject.class.toString() == "Num") {
    ...
}

And what is the returned value type? Will it have to be a String?

---

The mirror library has been up and down and seems to be subject to rapid change right now, as the one thing I did find simply did not work as shown.

question from:https://stackoverflow.com/questions/12879877/how-to-tell-if-an-object-is-an-instance-of-a-class

Answer 1

Recently Object got runtimeType getter. So, now we may not only compare type of object with another type, but actually get the class name of an object. As in:

myObject.runtimeType.toString()

Furthermore, in the current version of Dart, you can now skip toString operation and directly compare runtimeType of object with target type as in

myObject.runtimeType == int

or

myObject.runtimeType == Animal