append method
Appends the line
to the file
Appends newline
after the line.
If newline
is null or isn't passed then the platform
end of line characters are appended as defined by
Platform().eol
.
Pass null or an '' to newline
to not add a line terminator.
Implementation
Future<void> append(String line, {String? newline}) async {
final finalline = line + (newline ?? Platform().eol);
(await _raf)
..setPositionSync((await _raf).lengthSync())
..writeStringSync(finalline);
}