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| /* | ||
| * Scala (https://www.scala-lang.org) | ||
| * | ||
| * Copyright EPFL and Lightbend, Inc. | ||
| * | ||
| * Licensed under Apache License 2.0 | ||
| * (http://www.apache.org/licenses/LICENSE-2.0). | ||
| * | ||
| * See the NOTICE file distributed with this work for | ||
| * additional information regarding copyright ownership. | ||
| */ | ||
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| // GENERATED CODE: DO NOT EDIT. See scala.Function0 for timestamp. | ||
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| package scala | ||
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| object Function1 { | ||
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| implicit final class UnliftOps[A, B] private[Function1](private val f: A => Option[B]) extends AnyVal { | ||
| /** Converts an optional function to a partial function. | ||
| * | ||
| * @example Unlike [[Function.unlift]], this [[UnliftOps.unlift]] method can be used in extractors. | ||
| * {{{ | ||
| * val of: Int => Option[String] = { i => | ||
| * if (i == 2) { | ||
| * Some("matched by an optional function") | ||
| * } else { | ||
| * None | ||
| * } | ||
| * } | ||
| * | ||
| * util.Random.nextInt(4) match { | ||
| * case of.unlift(m) => // Convert an optional function to a pattern | ||
| * println(m) | ||
| * case _ => | ||
| * println("Not matched") | ||
| * } | ||
| * }}} | ||
| */ | ||
| def unlift: PartialFunction[A, B] = Function.unlift(f) | ||
| } | ||
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| } | ||
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| /** A function of 1 parameter. | ||
| * | ||
| * In the following example, the definition of `succ` is | ||
| * shorthand, conceptually, for the anonymous class definition | ||
| * `anonfun1`, although the implementation details of how the | ||
| * function value is constructed may differ: | ||
| * | ||
| * {{{ | ||
| * object Main extends App { | ||
| * val succ = (x: Int) => x + 1 | ||
| * val anonfun1 = new Function1[Int, Int] { | ||
| * def apply(x: Int): Int = x + 1 | ||
| * } | ||
| * assert(succ(0) == anonfun1(0)) | ||
| * } | ||
| * }}} | ||
| * | ||
| * Note that the difference between `Function1` and [[scala.PartialFunction]] | ||
| * is that the latter can specify inputs which it will not handle. | ||
| */ | ||
| @annotation.implicitNotFound(msg = "No implicit view available from ${T1} => ${R}.") | ||
| trait Function1[@specialized(Specializable.Arg) -T1, @specialized(Specializable.Return) +R] extends AnyRef { // FIXME: self => | ||
| /** Apply the body of this function to the argument. | ||
| * @return the result of function application. | ||
| */ | ||
| def apply(v1: T1): R | ||
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| /** Composes two instances of Function1 in a new Function1, with this function applied last. | ||
| * | ||
| * @tparam A the type to which function `g` can be applied | ||
| * @param g a function A => T1 | ||
| * @return a new function `f` such that `f(x) == apply(g(x))` | ||
| */ | ||
| @annotation.unspecialized def compose[A](g: A => T1): A => R = { x => apply(g(x)) } | ||
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| /** Composes two instances of Function1 in a new Function1, with this function applied first. | ||
| * | ||
| * @tparam A the result type of function `g` | ||
| * @param g a function R => A | ||
| * @return a new function `f` such that `f(x) == g(apply(x))` | ||
| */ | ||
| @annotation.unspecialized def andThen[A](g: R => A): T1 => A = { x => g(apply(x)) } | ||
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| override def toString(): String = "<function1>" | ||
| } |
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