Is instance castable to class

Question

class A { this() { } }
class B : A { this() { } }
auto b = new B()
if(b.IsCastableTo(A)) {
    //...
}

How would I check if b can be casted to type A?

Answer 1

According to the D manual you would do:

if (cast(A) b) { 
  // b is an instance of A 
} else { 
  // b is not an instance of A 
}

References:

• Expressions in D