How to make method return the same generic as the input?

Question

I want to split a string delimited by commas and use the result as either a Seq or a Set:

def splitByComma(commaDelimited: String): Arr         


        

Answer 1

There's a simple workaround for this. Not exactly the requested syntax but just as concise and it should be 2.13 compatible.

def simpleSplitByComma(coll :Iterable[String]) =
  coll.flatMap(_.trim.split(","))

simpleSplitByComma(Set("hello,world"))          //res0: Set(hello, world)
simpleSplitByComma(Seq("bellow,world"))         //res1: List(bellow, world)
simpleSplitByComma(Array("fellow,old"))         //res2: ArrayBuffer(fellow, old)
simpleSplitByComma(Stream("end,of,the,world"))  //res3: Stream(end, ?)