sealed trait GroupBy[-R, +E, +K, +V] extends AnyRef
Representation of a grouped stream. This allows to filter which groups will be processed. Once this is applied all groups will be processed in parallel and the results will be merged in arbitrary order.
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- GroupBy[R, E, K, V]
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- def apply[R1 <: R, E1 >: E, A](f: (K, ZStream[Any, E, V]) => ZStream[R1, E1, A], buffer: => Int = 16)(implicit trace: Trace): ZStream[R1, E1, A]
Run the function across all groups, collecting the results in an arbitrary order.
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- def filter(f: (K) => Boolean): GroupBy[R, E, K, V]
Filter the groups to be processed.
- def first(n: => Int): GroupBy[R, E, K, V]
Only consider the first n groups found in the stream.
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