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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2023/01/03 21:48:50 UTC

[GitHub] [beam] kennknowles commented on issue #24801: [Bug]: ReadableState.read() marked not nullable, but it does return null when not initialized

kennknowles commented on issue #24801:
URL: https://github.com/apache/beam/issues/24801#issuecomment-1370258242

   yea, the `T` can be instantiated to `@Nullable Foo`. In most cases, generics should not be marked nullable because that is a property of the actual type parameter. The generic parameter can have lower/upper bounds that force it to always be a supertype or subtype of nullable.


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