Trait

scala

Curried

Related Doc: package scala

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trait Curried extends CurriedWithTypeParameters

A marker trait that enables curried varargs.

Given a function call f(a, b, c), when f is a subtype of Curried, it should be rewritten to f.applyBegin.applyNext(a).applyNext(b).applyNext(c).applyEnd.

Optionally, some arguments to a Curried call may be a sequence argument marked as _*. Given a function call f(p1, s1: _*, p2), when translating it to the curried form, the sequence argument will becomes a foldLeft call.

f.applyBegin
  .applyNext(p1)
  .applyNextSeq(s1)
  .applyNext(p2)
.applyEnd

Unlike traditional repeated parameters, which restrict the sequence argument at the last position, sequence arguments in a curried call are allowed at any position.

When a Curried is invoked with some type arguments, those type arguments will be moved to the applyBegin method. Therefore, List[Int](1 to 3: _*) should be translated to (1 to 3).foldLeft(List.applyBegin[Int])(_.applyNext(_)).applyEnd.

Source
Curried.scala
Example:

  1. Fast list builder

    class PartiallyAppliedInitializer[A](builder: collection.mutable.Builder[A, List[A]]) {
  def applyEnd = builder.result
  def applyNextSeq(seq: Seq[A]) = {
    builder ++= seq
    this
  }
  def applyNext(a: A) = {
    builder += a
    this
  }
}
object FastListInitializer extends Curried {
  def applyBegin[A]:PartiallyAppliedInitializer[A] = new PartiallyAppliedInitializer(List.newBuilder[A])
}
FastListInitializer(0, 4) should be(List(0, 4))
FastListInitializer[Int](0, 100 to 103: _*, 1) should be(List(0, 100, 101, 102, 103, 1))
Linear Supertypes
CurriedWithTypeParameters, Any
Type Hierarchy
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Inherited
  1. Curried
  2. CurriedWithTypeParameters
  3. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Abstract Value Members

  1. abstract def getClass(): Class[_]

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    Definition Classes
    Any

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    Any

  2. final def ##(): Int

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    Definition Classes
    Any

  3. def +(other: String): String

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    Implicit information
    This member is added by an implicit conversion from Curried to any2stringadd[Curried] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd

  4. def ->[B](y: B): (Curried, B)

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    Implicit information
    This member is added by an implicit conversion from Curried to ArrowAssoc[Curried] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()

  5. final def ==(arg0: Any): Boolean

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    Definition Classes
    Any

  6. macro def apply(varargs: Any*): Any

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  7. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  8. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  9. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  10. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  11. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  12. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  13. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  14. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  15. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  16. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  17. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  18. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  19. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8, A9](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  20. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7, A8](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  21. macro def apply[A0, A1, A2, A3, A4, A5, A6, A7](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  22. macro def apply[A0, A1, A2, A3, A4, A5, A6](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  23. macro def apply[A0, A1, A2, A3, A4, A5](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  24. macro def apply[A0, A1, A2, A3, A4](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  25. macro def apply[A0, A1, A2, A3](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  26. macro def apply[A0, A1, A2](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  27. macro def apply[A0, A1](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  28. macro def apply[A0](varargs: Any*): Any

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    Definition Classes
    CurriedWithTypeParameters

  29. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  30. def ensuring(cond: (Curried) ⇒ Boolean, msg: ⇒ Any): Curried

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    Implicit information
    This member is added by an implicit conversion from Curried to Ensuring[Curried] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  31. def ensuring(cond: (Curried) ⇒ Boolean): Curried

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    Implicit information
    This member is added by an implicit conversion from Curried to Ensuring[Curried] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  32. def ensuring(cond: Boolean, msg: ⇒ Any): Curried

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    Implicit information
    This member is added by an implicit conversion from Curried to Ensuring[Curried] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  33. def ensuring(cond: Boolean): Curried

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    Implicit information
    This member is added by an implicit conversion from Curried to Ensuring[Curried] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring

  34. def equals(arg0: Any): Boolean

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    Definition Classes
    Any

  35. def formatted(fmtstr: String): String

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    Implicit information
    This member is added by an implicit conversion from Curried to StringFormat[Curried] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()

  36. def hashCode(): Int

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    Definition Classes
    Any

  37. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  38. def toString(): String

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    Definition Classes
    Any

  39. def →[B](y: B): (Curried, B)

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    Implicit information
    This member is added by an implicit conversion from Curried to ArrowAssoc[Curried] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from CurriedWithTypeParameters

Inherited from Any

Inherited by implicit conversion any2stringadd from Curried to any2stringadd[Curried]

Inherited by implicit conversion StringFormat from Curried to StringFormat[Curried]

Inherited by implicit conversion Ensuring from Curried to Ensuring[Curried]

Inherited by implicit conversion ArrowAssoc from Curried to ArrowAssoc[Curried]

Ungrouped