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Alex Rivera
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In Groovy you can do surprising type conversions using either the as operator or the asType method. Examples include Short s = new Integer(6) as Short List collection = new HashSet().asType(List) I'm surprised that I can convert from an Integer to a Short and from a Set to a List, because there is no "is a" relationship between these types, although they do share a common ancestor. For example, the following code is equivalent to the Integer/Short example in terms of the relationship between the types involved in the conversion class Parent {} class Child1 extends Parent {} class Child2 extends Parent {} def c = new Child1() as Child2 But of course this example fails. What exactly are the type conversion rules behind the as operator and the asType method?
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