константа all
Битовая маска для FileSystemEntity.watch, включающая все значения: create, modify, delete и move.
Реализация
static const int all = create | modify | delete | move;
© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.19.6/dart-io/FileSystemEvent/all-constant.html