Returns the number of objects in this list.
The valid indices for a list are 0 through length - 1.
int get length => _source.length;
This operation is not supported by an unmodifiable list.
set length(int newLength) {
throw new UnsupportedError(
"Cannot change the length of an unmodifiable list");
}
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-collection/UnmodifiableListView/length.html