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shapeless

record

object record

Record operations on HList's with field-like elements.

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  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: Any): Boolean
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  8. def finalize(): Unit
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  9. final def getClass(): Class[_]
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  10. def hashCode(): Int
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  11. final def isInstanceOf[T0]: Boolean
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  12. final def ne(arg0: AnyRef): Boolean
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  13. final def notify(): Unit
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  14. final def notifyAll(): Unit
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  15. implicit def recordOps[L <: HList](l: L): RecordOps[L]
  16. final def synchronized[T0](arg0: ⇒ T0): T0
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  17. def toString(): String
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  18. final def wait(): Unit
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  19. final def wait(arg0: Long, arg1: Int): Unit
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  20. final def wait(arg0: Long): Unit
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  21. object Record extends Dynamic

    Records encoded as HLists of their value types intersected with the singleton types of their keys.

    Records encoded as HLists of their value types intersected with the singleton types of their keys.

    Record types may be written using a relatively concise syntax thanks to a trick due to Denys Shabalin (@den_sh) and Eugene Burmako (@xeno_by). We use a combination of selectDynamic and backticks to embed a type in a path which appears to the compiler as stable,

    type Xyz = Record.`'x -> Int, 'y -> String, 'z -> Boolean`.T

    The use of singleton-typed Symbols as keys would make this type extremely laborious to write out by hand.

    There is also a mechanism for creating values of record types using Scala's named argument syntax. Values of the type just defined can be created as follows,

    val xyz = Record(x = 23, y = "foo", z = true)
xyz('y) // == "foo"

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