Question

I am working on Play Framework 2.0 and it uses Jerkson to parse JSON strings. I was using it successfully to parse Immutable Lists of strings like so:

Json.parse( jsonStr ).as[ List[String] ]

But this code doesn’t work for me when I try

Json.parse( jsonStr ).as[ MutableList[String] ]

Does anyone know how I can do this easily?

Answer 1

E.g. new MutableList[String]() ++= Json.parse( jsonStr ).as[ List[String] ] (assuming @DanSimon is correct about which MutableList you mean). But the most used mutable list-like collection in Scala is a Buffer which could be obtained as Buffer(Json.parse( jsonStr ).as[ List[String] ] or Json.parse( jsonStr ).as[ List[String] ].toBuffer.