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Add Iterant.switchIfEmpty #499

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alexandru opened this Issue Jan 7, 2018 · 0 comments

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alexandru commented Jan 7, 2018

Need an op for Iterant that switches to an alternative stream if the source is empty.

sealed abstract class Iterant[F[_], A] {
  // ...
  def switchIfEmpty(fallback: Iterant[F, A])(implicit F: Sync[F]): Iterant[F, A]
}

Similar with the Observable.switchIfEmpty, see the implementation for inspiration.

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