mirror of https://github.com/sbt/sbt.git
17 lines
437 B
Scala
17 lines
437 B
Scala
/* sbt -- Simple Build Tool
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* Copyright 2011 Mark Harrah
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*/
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package sbt
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object Collections
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{
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def separate[T,A,B](ps: Seq[T])(f: T => Either[A,B]): (Seq[A], Seq[B]) =
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((Nil: Seq[A], Nil: Seq[B]) /: ps)( (xs, y) => prependEither(xs, f(y)) )
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def prependEither[A,B](acc: (Seq[A], Seq[B]), next: Either[A,B]): (Seq[A], Seq[B]) =
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next match
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{
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case Left(l) => (l +: acc._1, acc._2)
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case Right(r) => (acc._1, r +: acc._2)
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}
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} |