CODEWITHSUNDEEP
scala
DeanK
DeanK

Reputation: 344

Type of parameter or return type as parameter?

I am currently in a project where I need to learn Scala and Lift, so I am reading Beginning Scala atm. Everything went fine until I reached the method declaration, in which it has these confusing line of code

def list[T](p : T): List[T] = p::nil
list:[T](T)List[T]

Author wrote that this is pretty obvious, but... help?

Upvotes: 0

Views: 69

Answers (1)

Johny T Koshy
Johny T Koshy

Reputation: 3887

The first line def list[T](p : T): List[T] = p::Nil defines a method named list which takes a argument of type parameter T and returns an output of type List[T] by creating a list using p::Nil.

The second line list:[T](p:T)List[T] shows the method signature, which again implies the same.

If you try def list[T](p : T): List[T] = p::Nil in scala repl you get list:[T](p:T)List[T].

Upvotes: 3

Related Questions