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kallentu/variance_subclass_invariant.dart

Created December 17, 2019 17:33
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variance_subclass_invariant.dart
class ReaderWriter<inout T> {}
class NewReaderWriter<inout T> extends LegacyReader<T> {} // OK
class IntegerReaderWriter<inout T> extends Reader<T> {} // OK
class StringReaderWriter<inout T> extends Writer<T> {} // OK
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