CODEWITHSUNDEEP
scala
blue-sky
blue-sky

Reputation: 53816

How is toList available on type A from List.scala?

In List source : http://lampsvn.epfl.ch/trac/scala/browser/scala/tags/R_2_7_7_final/src/library/scala/List.scala?view=markup

apply method on object List is defined as : 

 def apply[A](xs: A*): List[A] = xs.toList

as A is not a type how is the toList method available ?

Upvotes: 0

Views: 87

Answers (1)

jwvh
jwvh

Reputation: 51271

xs is defined as A* which means that it's a Seq[A]. That's how Scala does varargs: List(), List(3,2,9), List('c','q'), etc.

The toList method comes from the Seq class.

Upvotes: 3

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