Same problem as here:
c.asInstanceOf[TypeRefApi].args.head
質問
In a macro impl[A: c.WeakTypeTag]
, if I find that c.weakTypeOf[A] <:< typeOf[Option[Any]]
, how do I get the type parameter of the Option
? E.g., when A
is Option[String]
, I need to find String
.
解決
Same problem as here:
c.asInstanceOf[TypeRefApi].args.head