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Resource management in streams #27

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Primetalk opened this issue Jun 17, 2022 · 3 comments
Open

Resource management in streams #27

Primetalk opened this issue Jun 17, 2022 · 3 comments
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Currently streams can only use resources provided at the top level via ordinary resource.Use.
Sometimes we need to pass streams around and we wish that resources are correctly released when stream is either finished or thrown away.
@Primetalk Primetalk self-assigned this Jun 17, 2022
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This requires adding a finalizer to all stream steps. Then in every stream executor, these finalizers should be respected and appended to io.

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Signature might look like

stream.Finally[A any](stm stream.Stream[A], func () io.IOUnit) stream.Stream[A]

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There are two FStreams - one that is just a pair of stream and IO to finalize, and another one - IO of such pair. The difference is that IO represents a stream that has not yet been started.

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