trait Annotation[A, T] extends Serializable
Evidence that type T
has annotation A
, and provides an instance of the annotation.
If type T
has an annotation of type A
, then an implicit Annotation[A, T]
can be found, and its apply
method
provides an instance of the annotation.
Example:
case class First(i: Int) @First(3) trait Something val somethingFirst = Annotation[First, Something].apply() assert(somethingFirst == First(3))
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