Creates a Uint64List with the same length as the elements
list and copies over the elements.
Values are truncated to fit in the list when they are copied, the same way storing values truncates them.
external factory Uint64List.fromList(List<int> elements);
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-typed_data/Uint64List/Uint64List.fromList.html