CODEWITHSUNDEEP
scala
kisileno
kisileno

Reputation: 787

Scala function that returns same function

I'm trying to make a function whose return type is not just a function (A=>B), but the same function. Here is an example:

trait Command

type Config = Command => Command

def addCommand(c: Command): Config = {
  addCommand _
}

The above seems to be ok, but it gives this compile error:

found   : Command => Command
required: Command

Is there way to repair this thing?

Upvotes: 0

Views: 139

Answers (1)

4lex1v
4lex1v

Reputation: 21557

How about currying?

scala> val ac: Command => Config = cm => confCom => confCom
ac: Command => (Command => Command) = <function1>

scala> val c: Config = ac(new Command {})
c: Command => Command = <function1>

Upvotes: 1

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