Truncates (or extends) the file to length
bytes. Returns a Future<RandomAccessFile>
that completes with this RandomAccessFile when the truncation has been performed.
Future<RandomAccessFile> truncate(int length);
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-io/RandomAccessFile/truncate.html