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import scala.reflect.runtime.universe._
import scala.reflect.runtime.{currentMirror => cm}
object Test extends App {
class A {
var x: Int = 42
}
val a = new A
val im: InstanceMirror = cm.reflect(a)
val cs = im.symbol
val f = cs.typeSignature.declaration(newTermName("x" + nme.LOCAL_SUFFIX_STRING)).asTerm
val fm: FieldMirror = im.reflectField(f)
println(fm.get)
fm.set(2)
println(fm.get)
}
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