     "  - Ken Griffey\n"
   )
   assert(value["hr"].count == 2)
-  assert(value["hr"][1].string! == "Sammy Sosa")
+  assert(value["hr"][1].string == "Sammy Sosa")
   assert(value["rbi"].count == 2)
-  assert(value["rbi"][0].string! == "Sammy Sosa")
+  assert(value["rbi"][0].string == "Sammy Sosa")
 }
 
 func example11 () {

  )
  assert(value.count == 2)
  assert(value["national"].count == 3)
  assert(value["national"][2].string! == "Atlanta Braves")
}

func example4 () {

    "    avg: 0.288\n" +
    "  }\n"
  )
  assert(value["Mark McGwire"]["hr"].int == 65)
  assert(value["Sammy Sosa"]["hr"].int == 63)
}

func example7 () {
