Scala 2.10 – Reflection against Named Arguments

gistfile1.scala

import scala.reflect.runtime.universe._
import scala.reflect.runtime._

def newInstance(tpe:Type, args:Map[String, Any]) = {
    val clazz = tpe.typeSymbol.asClass
    val ctor = tpe.member(nme.CONSTRUCTOR).asMethod
    var argList = ctor.params(0).map { a => args(a.name.toString) }
    currentMirror.reflectClass(clazz).reflectConstructor(ctor)(argList:_*)
}

println(newInstance(typeOf[Foo], args))