How to get ClassTag form TypeTag, or both at same time?
The library doesn’t provide a built-in method that directly converts a TypeTag to a ClassTag, but you can write one: import reflect.runtime.universe._ import reflect.ClassTag def typeToClassTag[T: TypeTag]: ClassTag[T] = { ClassTag[T]( typeTag[T].mirror.runtimeClass( typeTag[T].tpe ) ) } Then in your method just add before the implicit ClassTag is needed: implicit val c = typeToClassTag[T]