Object scala.jdk.FunctionConverters

object FunctionConverters extends Priority0FunctionExtensions

This object provides extension methods that convert between Scala and Java function types.

When writing Java code, use the explicit conversion methods defined in javaapi.FunctionConverters instead.

Using the .asJava extension method on a Scala function produces the most specific possible Java function type:

scala> import scala.jdk.FunctionConverters._
scala> val f = (x: Int) => x + 1

scala> val jf1 = f.asJava
jf1: java.util.function.IntUnaryOperator = ...

More generic Java function types can be created using the corresponding asJavaXYZ extension method:

scala> val jf2 = f.asJavaFunction
jf2: java.util.function.Function[Int,Int] = ...

scala> val jf3 = f.asJavaUnaryOperator
jf3: java.util.function.UnaryOperator[Int] = ...

Converting a Java function to Scala is done using the asScala extension method:

scala> List(1,2,3).map(jf2.asScala)
res1: List[Int] = List(2, 3, 4)

Inherited implicits

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implicit def enrichAsJavaBiConsumer[T, U](sf: (T, U) => Unit): RichFunction2AsBiConsumer[T, U]

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implicit def enrichAsJavaBiFunction[T, U, R](sf: (T, U) => R): RichFunction2AsBiFunction[T, U, R]

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implicit def enrichAsJavaBiPredicate[T, U](sf: (T, U) => Boolean): RichFunction2AsBiPredicate[T, U]

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implicit def enrichAsJavaBinaryOperator[T, A1, A2](sf: (T, A1) => A2)(implicit evA1: A1 =:= T, evA2: A2 =:= T): RichFunction2AsBinaryOperator[T]

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implicit def enrichAsJavaBooleanSupplier(sf: () => Boolean): RichFunction0AsBooleanSupplier

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implicit def enrichAsJavaConsumer[T](sf: T => Unit): RichFunction1AsConsumer[T]

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implicit def enrichAsJavaDoubleBinaryOperator[A0, A1](sf: (A0, A1) => Double)(implicit evA0: A0 =:= Double, evA1: A1 =:= Double): RichFunction2AsDoubleBinaryOperator

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implicit def enrichAsJavaDoubleConsumer[A0](sf: A0 => Unit)(implicit evA0: A0 =:= Double): RichFunction1AsDoubleConsumer

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implicit def enrichAsJavaDoubleFunction[A0, R](sf: A0 => R)(implicit evA0: A0 =:= Double): RichFunction1AsDoubleFunction[R]

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implicit def enrichAsJavaDoublePredicate[A0](sf: A0 => Boolean)(implicit evA0: A0 =:= Double): RichFunction1AsDoublePredicate

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implicit def enrichAsJavaDoubleSupplier(sf: () => Double): RichFunction0AsDoubleSupplier

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implicit def enrichAsJavaDoubleToIntFunction[A0](sf: A0 => Int)(implicit evA0: A0 =:= Double): RichFunction1AsDoubleToIntFunction

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implicit def enrichAsJavaDoubleToLongFunction[A0](sf: A0 => Long)(implicit evA0: A0 =:= Double): RichFunction1AsDoubleToLongFunction

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implicit def enrichAsJavaDoubleUnaryOperator[A0](sf: A0 => Double)(implicit evA0: A0 =:= Double): RichFunction1AsDoubleUnaryOperator

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implicit def enrichAsJavaFunction[T, R](sf: T => R): RichFunction1AsFunction[T, R]

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implicit def enrichAsJavaIntBinaryOperator[A0, A1](sf: (A0, A1) => Int)(implicit evA0: A0 =:= Int, evA1: A1 =:= Int): RichFunction2AsIntBinaryOperator

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implicit def enrichAsJavaIntConsumer[A0](sf: A0 => Unit)(implicit evA0: A0 =:= Int): RichFunction1AsIntConsumer

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implicit def enrichAsJavaIntFunction[A0, R](sf: A0 => R)(implicit evA0: A0 =:= Int): RichFunction1AsIntFunction[R]

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implicit def enrichAsJavaIntPredicate[A0](sf: A0 => Boolean)(implicit evA0: A0 =:= Int): RichFunction1AsIntPredicate

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implicit def enrichAsJavaIntSupplier(sf: () => Int): RichFunction0AsIntSupplier

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implicit def enrichAsJavaIntToDoubleFunction[A0](sf: A0 => Double)(implicit evA0: A0 =:= Int): RichFunction1AsIntToDoubleFunction

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implicit def enrichAsJavaIntToLongFunction[A0](sf: A0 => Long)(implicit evA0: A0 =:= Int): RichFunction1AsIntToLongFunction

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implicit def enrichAsJavaIntUnaryOperator[A0](sf: A0 => Int)(implicit evA0: A0 =:= Int): RichFunction1AsIntUnaryOperator

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implicit def enrichAsJavaLongBinaryOperator[A0, A1](sf: (A0, A1) => Long)(implicit evA0: A0 =:= Long, evA1: A1 =:= Long): RichFunction2AsLongBinaryOperator

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implicit def enrichAsJavaLongConsumer[A0](sf: A0 => Unit)(implicit evA0: A0 =:= Long): RichFunction1AsLongConsumer

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implicit def enrichAsJavaLongFunction[A0, R](sf: A0 => R)(implicit evA0: A0 =:= Long): RichFunction1AsLongFunction[R]

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implicit def enrichAsJavaLongPredicate[A0](sf: A0 => Boolean)(implicit evA0: A0 =:= Long): RichFunction1AsLongPredicate

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implicit def enrichAsJavaLongSupplier(sf: () => Long): RichFunction0AsLongSupplier

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implicit def enrichAsJavaLongToDoubleFunction[A0](sf: A0 => Double)(implicit evA0: A0 =:= Long): RichFunction1AsLongToDoubleFunction

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implicit def enrichAsJavaLongToIntFunction[A0](sf: A0 => Int)(implicit evA0: A0 =:= Long): RichFunction1AsLongToIntFunction

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implicit def enrichAsJavaLongUnaryOperator[A0](sf: A0 => Long)(implicit evA0: A0 =:= Long): RichFunction1AsLongUnaryOperator

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implicit def enrichAsJavaObjDoubleConsumer[T, A1](sf: (T, A1) => Unit)(implicit evA1: A1 =:= Double): RichFunction2AsObjDoubleConsumer[T]

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implicit def enrichAsJavaObjIntConsumer[T, A1](sf: (T, A1) => Unit)(implicit evA1: A1 =:= Int): RichFunction2AsObjIntConsumer[T]

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implicit def enrichAsJavaObjLongConsumer[T, A1](sf: (T, A1) => Unit)(implicit evA1: A1 =:= Long): RichFunction2AsObjLongConsumer[T]

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implicit def enrichAsJavaPredicate[T](sf: T => Boolean): RichFunction1AsPredicate[T]

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implicit def enrichAsJavaSupplier[T](sf: () => T): RichFunction0AsSupplier[T]

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implicit def enrichAsJavaToDoubleBiFunction[T, U](sf: (T, U) => Double): RichFunction2AsToDoubleBiFunction[T, U]

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implicit def enrichAsJavaToDoubleFunction[T](sf: T => Double): RichFunction1AsToDoubleFunction[T]

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implicit def enrichAsJavaToIntBiFunction[T, U](sf: (T, U) => Int): RichFunction2AsToIntBiFunction[T, U]

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implicit def enrichAsJavaToIntFunction[T](sf: T => Int): RichFunction1AsToIntFunction[T]

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implicit def enrichAsJavaToLongBiFunction[T, U](sf: (T, U) => Long): RichFunction2AsToLongBiFunction[T, U]

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implicit def enrichAsJavaToLongFunction[T](sf: T => Long): RichFunction1AsToLongFunction[T]

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implicit def enrichAsJavaUnaryOperator[T, A1](sf: T => A1)(implicit evA1: A1 =:= T): RichFunction1AsUnaryOperator[T]

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implicit def enrichAsScalaFromBiConsumer[T, U](jf: BiConsumer[T, U]): RichBiConsumerAsFunction2[T, U]

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implicit def enrichAsScalaFromBiFunction[T, U, R](jf: BiFunction[T, U, R]): RichBiFunctionAsFunction2[T, U, R]

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implicit def enrichAsScalaFromBiPredicate[T, U](jf: BiPredicate[T, U]): RichBiPredicateAsFunction2[T, U]

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implicit def enrichAsScalaFromBinaryOperator[T](jf: BinaryOperator[T]): RichBinaryOperatorAsFunction2[T]

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implicit def enrichAsScalaFromBooleanSupplier(jf: BooleanSupplier): RichBooleanSupplierAsFunction0

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implicit def enrichAsScalaFromConsumer[T](jf: Consumer[T]): RichConsumerAsFunction1[T]

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implicit def enrichAsScalaFromDoubleBinaryOperator(jf: DoubleBinaryOperator): RichDoubleBinaryOperatorAsFunction2

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implicit def enrichAsScalaFromDoubleConsumer(jf: DoubleConsumer): RichDoubleConsumerAsFunction1

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implicit def enrichAsScalaFromDoubleFunction[R](jf: DoubleFunction[R]): RichDoubleFunctionAsFunction1[R]

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implicit def enrichAsScalaFromDoublePredicate(jf: DoublePredicate): RichDoublePredicateAsFunction1

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implicit def enrichAsScalaFromDoubleSupplier(jf: DoubleSupplier): RichDoubleSupplierAsFunction0

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implicit def enrichAsScalaFromDoubleToIntFunction(jf: DoubleToIntFunction): RichDoubleToIntFunctionAsFunction1

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implicit def enrichAsScalaFromDoubleToLongFunction(jf: DoubleToLongFunction): RichDoubleToLongFunctionAsFunction1

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implicit def enrichAsScalaFromDoubleUnaryOperator(jf: DoubleUnaryOperator): RichDoubleUnaryOperatorAsFunction1

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implicit def enrichAsScalaFromFunction[T, R](jf: Function[T, R]): RichFunctionAsFunction1[T, R]

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implicit def enrichAsScalaFromIntBinaryOperator(jf: IntBinaryOperator): RichIntBinaryOperatorAsFunction2

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implicit def enrichAsScalaFromIntConsumer(jf: IntConsumer): RichIntConsumerAsFunction1

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implicit def enrichAsScalaFromIntFunction[R](jf: IntFunction[R]): RichIntFunctionAsFunction1[R]

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implicit def enrichAsScalaFromIntPredicate(jf: IntPredicate): RichIntPredicateAsFunction1

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implicit def enrichAsScalaFromIntSupplier(jf: IntSupplier): RichIntSupplierAsFunction0

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implicit def enrichAsScalaFromIntToDoubleFunction(jf: IntToDoubleFunction): RichIntToDoubleFunctionAsFunction1

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implicit def enrichAsScalaFromIntToLongFunction(jf: IntToLongFunction): RichIntToLongFunctionAsFunction1

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implicit def enrichAsScalaFromIntUnaryOperator(jf: IntUnaryOperator): RichIntUnaryOperatorAsFunction1

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implicit def enrichAsScalaFromLongBinaryOperator(jf: LongBinaryOperator): RichLongBinaryOperatorAsFunction2

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implicit def enrichAsScalaFromLongConsumer(jf: LongConsumer): RichLongConsumerAsFunction1

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implicit def enrichAsScalaFromLongFunction[R](jf: LongFunction[R]): RichLongFunctionAsFunction1[R]

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implicit def enrichAsScalaFromLongPredicate(jf: LongPredicate): RichLongPredicateAsFunction1

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implicit def enrichAsScalaFromLongSupplier(jf: LongSupplier): RichLongSupplierAsFunction0

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implicit def enrichAsScalaFromLongToDoubleFunction(jf: LongToDoubleFunction): RichLongToDoubleFunctionAsFunction1

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implicit def enrichAsScalaFromLongToIntFunction(jf: LongToIntFunction): RichLongToIntFunctionAsFunction1

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implicit def enrichAsScalaFromLongUnaryOperator(jf: LongUnaryOperator): RichLongUnaryOperatorAsFunction1

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implicit def enrichAsScalaFromObjDoubleConsumer[T](jf: ObjDoubleConsumer[T]): RichObjDoubleConsumerAsFunction2[T]

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implicit def enrichAsScalaFromObjIntConsumer[T](jf: ObjIntConsumer[T]): RichObjIntConsumerAsFunction2[T]

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implicit def enrichAsScalaFromObjLongConsumer[T](jf: ObjLongConsumer[T]): RichObjLongConsumerAsFunction2[T]

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implicit def enrichAsScalaFromPredicate[T](jf: Predicate[T]): RichPredicateAsFunction1[T]

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implicit def enrichAsScalaFromSupplier[T](jf: Supplier[T]): RichSupplierAsFunction0[T]

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implicit def enrichAsScalaFromToDoubleBiFunction[T, U](jf: ToDoubleBiFunction[T, U]): RichToDoubleBiFunctionAsFunction2[T, U]

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implicit def enrichAsScalaFromToDoubleFunction[T](jf: ToDoubleFunction[T]): RichToDoubleFunctionAsFunction1[T]

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implicit def enrichAsScalaFromToIntBiFunction[T, U](jf: ToIntBiFunction[T, U]): RichToIntBiFunctionAsFunction2[T, U]

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implicit def enrichAsScalaFromToIntFunction[T](jf: ToIntFunction[T]): RichToIntFunctionAsFunction1[T]

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implicit def enrichAsScalaFromToLongBiFunction[T, U](jf: ToLongBiFunction[T, U]): RichToLongBiFunctionAsFunction2[T, U]

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implicit def enrichAsScalaFromToLongFunction[T](jf: ToLongFunction[T]): RichToLongFunctionAsFunction1[T]

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implicit def enrichAsScalaFromUnaryOperator[T](jf: UnaryOperator[T]): RichUnaryOperatorAsFunction1[T]