score:0
Accepted answer
By having a look at the documentation, it's visible that JsObject companion extends (Seq[(String, JsValue)]) ⇒ JsObject, so rather than calling Json.obj (with extra conversion):
import play.api.libs.json._
def foo(fields: List[(String, JsValue)]): JsObject = JsObject(fields)
score:0
I don't know that specific library, but this should break the list into a set of separate arguments:
Json.obj(listOfFields:_*)
Source: stackoverflow.com
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