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Removed deprecation of >> and changed its param to be a by-name #2043

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Nov 26, 2017
Merged

Removed deprecation of >> and changed its param to be a by-name #2043

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8f74c9c
Removed deprecation of >> and changed its param to be a by-name
mpilquist Nov 25, 2017
2c63552
Adjusted mima exclusions
mpilquist Nov 25, 2017
ff5c3d8
Merge branch 'master' into topic/lazyAndThen
kailuowang Nov 25, 2017
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10 changes: 9 additions & 1 deletion build.sbt
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Expand Up @@ -247,7 +247,15 @@ def mimaSettings(moduleName: String) = Seq(
exclude[ReversedMissingMethodProblem]("cats.Foldable#Ops.collectFirst"),
exclude[ReversedMissingMethodProblem]("cats.NonEmptyParallel.parForEffect"),
exclude[ReversedMissingMethodProblem]("cats.NonEmptyParallel.parFollowedBy"),
exclude[ReversedMissingMethodProblem]("cats.syntax.ParallelSyntax.catsSyntaxParallelAp")
exclude[ReversedMissingMethodProblem]("cats.syntax.ParallelSyntax.catsSyntaxParallelAp"),
exclude[DirectMissingMethodProblem]("cats.FlatMap.>>="),
exclude[DirectMissingMethodProblem]("cats.FlatMap#Ops.>>="),
exclude[IncompatibleMethTypeProblem]("cats.syntax.FlatMapOps.>>"),
exclude[IncompatibleMethTypeProblem]("cats.syntax.FlatMapOps.>>$extension"),
exclude[DirectMissingMethodProblem]("cats.data.IndexedStateTMonad.>>="),
exclude[DirectMissingMethodProblem]("cats.data.RWSTMonad.>>="),
exclude[DirectMissingMethodProblem]("cats.data.CokleisliMonad.>>="),
exclude[DirectMissingMethodProblem]("cats.instances.FlatMapTuple2.>>=")
)
}
)
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5 changes: 0 additions & 5 deletions core/src/main/scala/cats/FlatMap.scala
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Expand Up @@ -20,11 +20,6 @@ import simulacrum.typeclass
@typeclass trait FlatMap[F[_]] extends Apply[F] {
def flatMap[A, B](fa: F[A])(f: A => F[B]): F[B]

/**
* Alias for [[flatMap]].
*/
def >>=[A, B](fa: F[A])(f: A => F[B]): F[B] = flatMap(fa)(f)

/**
* "flatten" a nested `F` of `F` structure into a single-layer `F` structure.
*
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15 changes: 13 additions & 2 deletions core/src/main/scala/cats/syntax/flatMap.scala
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Expand Up @@ -18,8 +18,19 @@ trait FlatMapSyntax extends FlatMap.ToFlatMapOps {

final class FlatMapOps[F[_], A](val fa: F[A]) extends AnyVal {

@deprecated("Use *> instead", "1.0.0-RC1")
def >>[B](fb: F[B])(implicit F: FlatMap[F]): F[B] = F.followedBy(fa)(fb)
/**
* Alias for [[flatMap]].
*/
def >>=[B](f: A => F[B])(implicit F: FlatMap[F]): F[B] = F.flatMap(fa)(f)

/**
* Alias for `fa.flatMap(_ => fb)`.
*
* Unlike `*>`, `fb` is defined as a by-name parameter, allowing this
* method to be used in cases where computing `fb` is not stack safe
* unless suspended in a `flatMap`.
*/
def >>[B](fb: => F[B])(implicit F: FlatMap[F]): F[B] = F.flatMap(fa)(_ => fb)

@deprecated("Use <* instead", "1.0.0-RC1")
def <<[B](fb: F[B])(implicit F: FlatMap[F]): F[A] = F.forEffect(fa)(fb)
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