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This resulted in a codegen error in C++ mode, because the generic types were not defined in modules where calls requiring downcasts were used (generating a downcast forces the inclusion of the full definition of the involved types).
15 lines
257 B
Nim
15 lines
257 B
Nim
type
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Base[T] = ref object {.inheritable.}
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value*: T
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Derived[T] = ref object of Base[T]
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derivedValue*: T
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proc makeDerived*[T](v: T): Derived[T] =
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new result
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result.value = v
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proc setBaseValue*[T](a: Base[T], value: T) =
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a.value = value
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