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ZValidation: add get, getOrElse, getOrElseWith #802

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Nov 13, 2021
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ZValidation: add get, getOrElse, getOrElseWith #802

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ZValidation: add valueOr and value to get out a successful value
sideeffffect Nov 13, 2021
586b3a4
get and getOrElseWith
sideeffffect Nov 13, 2021
c3a5847
get, getOrElse, getOrElseWith
sideeffffect Nov 13, 2021
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10 changes: 10 additions & 0 deletions core/shared/src/main/scala/zio/prelude/ZValidation.scala
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Original file line number Diff line number Diff line change
@@ -245,6 +245,16 @@ sealed trait ZValidation[+W, +E, +A] { self =>
ZIO.succeedNow
)

/**
* Returns the value, because no error has occurred.
*/
final def value(implicit ev: E <:< Nothing): A = self.asInstanceOf[Success[W, A]].value
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get and getOrElseWith? Can probably just fold with ev here.

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I decided not to use ev, because I have NonEmptyChunk[E] and although I could go out of my way to "prove" that is "absurd", it would probably be more hassle than it's worth it.

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👍


/**
* Returns the successful value or handles the errors that have accumulated.
*/
final def valueOr[A1 >: A](f: NonEmptyChunk[E] => A1): A1 = fold(f, identity)

/**
* A variant of `zipPar` that keeps only the left success value, but returns
* a failure with all errors if either this `ZValidation` or the specified