Hello Ted,
First of all, this topic belongs to reflection, which is specifically
stated to be out of scope of Swift 4 Phase 1. So all considerations are
purely theoretical for now.
That said, I also thought about this problem. The best I could imagine is
something along the following lines:
var builder = StructBuilder(name: "Person")
builder.addProperty(name: "name", type: String.self)
builder.addProperty(name: "age", type: Int.self)
builder.addComputedProperty(name: "description", getter: { (this: Any)
-> String in ... })
builder.addComformance(CustomStringConvertible.self)let type: Any.Type
= builder.build()
Obviously, to interact with such dynamic types and their objects, we need
the whole working reflection system that we don’t have right now.
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