How to perform runtime type checking in Dart?
The instanceof-operator is called is in Dart. The spec isn't exactly friendly to a casual reader, so the best description right now seems to be http://www.dartlang.org/articles/optional-types/.
Here's an example:
class Foo { }main() { var foo = new Foo(); if (foo is Foo) { print("it's a foo!"); }}
Dart Object type has a runtimeType instance member (source is from dart-sdk v1.14, don't know if it was available earlier)
class Object { //... external Type get runtimeType;}Usage:
Object o = 'foo';assert(o.runtimeType == String);
object.runtimeType returns the type of object
For example:
print("HELLO".runtimeType); //prints Stringvar x=0.0;print(x.runtimeType); //prints double