reflect: document which Convert() cases are still unimplemented

src/reflect/value.go

@@ -1154,8 +1154,6 @@ func convertOp(src Value, typ Type) (Value, bool) {
 			}
 		}
 
-		// TODO(dgryski): Implement other cases
-
 	case String:
 		rtype := typ.(*rawType)
 		if typ.Kind() == Slice && !rtype.elem().isNamed() {
@@ -1166,9 +1164,14 @@ func convertOp(src Value, typ Type) (Value, bool) {
 				return cvtStringRunes(src, rtype), true
 			}
 		}
-
 	}
 
+	// TODO(dgryski): Unimplemented:
+	// Chan
+	// Identical underlying types
+	// Non-defined pointers types with same underlying base type
+	// Interface <-> Type conversions
+
 	return Value{}, false
 }