final class FlatMapIdOps[A] extends AnyVal
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- new FlatMapIdOps(a: A)
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
getClass(): Class[_ <: AnyVal]
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final
def
isInstanceOf[T0]: Boolean
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def
iterateForeverM[F[_], B](f: (A) ⇒ F[A])(implicit F: FlatMap[F]): F[B]
iterateForeverM is almost exclusively useful for effect types.
iterateForeverM is almost exclusively useful for effect types. For instance, A may be some state, we may take the current state, run some effect to get a new state and repeat.
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def
tailRecM[F[_], B](f: (A) ⇒ F[Either[A, B]])(implicit F: FlatMap[F]): F[B]
Example:
Example:
scala> import cats.implicits._ scala> val a: Int = 10 scala> a.tailRecM[Option,String](i => if (i == 20) Some(Right("done")) else Some(Left(i+1))) res0: Option[String] = Some(done)
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def
toString(): String
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