24 lines
703 B
Markdown
24 lines
703 B
Markdown
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# headOption
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Materializes into a @scala[`Future[Option[T]]`] @java[`CompletionStage<Optional<T>>`] which completes with the first value arriving wrapped in @scala[`Some`] @java[`Optional`],
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or @scala[a `None`] @java[an empty Optional] if the stream completes without any elements emitted.
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## Signature
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## Description
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Materializes into a @scala[`Future[Option[T]]`] @java[`CompletionStage<Optional<T>>`] which completes with the first value arriving wrapped in @scala[`Some`] @java[`Optional`],
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or @scala[a `None`] @java[an empty Optional] if the stream completes without any elements emitted.
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@@@div { .callout }
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**cancels** after receiving one element
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**backpressures** never
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@@@
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## Example
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