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sdk/tests/language/instantiate_to_bound/README.md
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Konstantin Shcheglov 0c7b9cf470 Issue 40764. Use Never instead of Null when converting super-bounded to regular-bounded.
Bug: https://github.com/dart-lang/sdk/issues/40764
Change-Id: I58f0e9860dd000aa2d8e416c5fce7e8964db0ef8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/137280
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Paul Berry <paulberry@google.com>
2020-02-26 20:12:51 +00:00

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# Feature tests for instantiation to bounds, and super-bounded types
This directory was created in order to hold tests pertaining to the
Dart feature _instantiate to bound_, which provides inference of
default values for omitted type arguments. In order to handle
F-bounded type parameters without introducing infinite types, this
feature relies on another feature, _super-bounded types_, which is
therefore also in focus for tests in this directory. For more details,
please check the feature specifications on
[super-bounded types](https://github.com/dart-lang/sdk/blob/master/docs/language/informal/super-bounded-types.md)
and on
[instantiate to bound](https://github.com/dart-lang/sdk/blob/master/docs/language/informal/instantiate-to-bound.md).