trait UnionType[Types <: \/[_, _]] extends Default
This allows to restrict the handling of family to only some subtypes (not required to be sealed in this case).
import reactivemongo.api.bson.{ BSONDocumentWriter, Macros, MacroOptions }, MacroOptions.\/ trait Family case class TypeA(n: Int) extends Family case class TypeB(s: String) extends Family case class TypeC(f: Float) extends Family val writer: BSONDocumentWriter[Family] = { implicit val a = Macros.writer[TypeA] implicit val b = Macros.writer[TypeB] Macros.using[MacroOptions.UnionType[TypeA \/ TypeB]].writer[Family] }
- Types
to restrict the subtypes to handle
- See also
\/
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- def ensuring(cond: (UnionType[Types]) => Boolean, msg: => Any): UnionType[Types]
- def ensuring(cond: (UnionType[Types]) => Boolean): UnionType[Types]
- def ensuring(cond: Boolean, msg: => Any): UnionType[Types]
- def ensuring(cond: Boolean): UnionType[Types]
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Deprecated Value Members
- def →[B](y: B): (UnionType[Types], B)
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- This member is added by an implicit conversion from UnionType[Types] toArrowAssoc[UnionType[Types]] performed by method ArrowAssoc in scala.Predef.
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(Since version 2.13.0) Use
->
instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.