I'm new to statically typed languages in general, I'm doing this as a
learning experience.
I'm building a toy UI toolkit, and I want to create a tree of widgets.
Something like
interface Node {
children @0 () -> (list :List(Node));
}
interface TextNode extends(Node) {
//some textNode specific stuff
}
My problem is that I want a node to be able to contain anything that
*implements* the node interfaces, even if it's a textNode, or an SVGNode,
or whatever. Is there a way to do that without resorting to using
AnyPointer or registering all my sub nodes in advance? Some provision for
doing structural typing?
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