tree fa62ea357b19a39c968b1c7184735eaf9990eeaa
parent 80161c3081a28e2932e97ef0412e7b2c0f14e97f
author Oleksii Khomchenko <akhomchenko@gmail.com> 1607598027 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1607598027 +0000

[corelib] Add Set.unmodifiable backed by an UnmodifiableSetView

UnmodifiableSetView does not have backend specific implementations
(simillar to UnmodifiableMapView, unlike UnmodifiableListView).

Closes https://github.com/dart-lang/sdk/issues/36901

Change-Id: I041bb6dc95d6a67a395ca75581ffe8e5933acdc6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/164103
Commit-Queue: Lasse R.H. Nielsen <lrn@google.com>
Reviewed-by: Kevin Moore <kevmoo@google.com>
Reviewed-by: Stephen Adams <sra@google.com>
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>