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Scala Reflection typed Mirror.get #9739

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scabug opened this issue Apr 6, 2016 · 2 comments
Open

Scala Reflection typed Mirror.get #9739

scabug opened this issue Apr 6, 2016 · 2 comments
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@scabug
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scabug commented Apr 6, 2016

Hey,

In Mirrors we have:

def get: Any

Would it be possible to have instead:

def get[T]: T

?

So that we don't have all the time to do a .get.asInstanceOf[T] ?

Maybe even better with a default to Any?

sealed class DefaultsToAny[A]

object DefaultsToAny {
  implicit def overrideDefault[A] = new DefaultsToAny[A]

  implicit def default = new DefaultsToAny[Any]
}

and

def get[T: DefaultToAny]: T
@scabug
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scabug commented Apr 6, 2016

Imported From: https://issues.scala-lang.org/browse/SI-9739?orig=1
Reporter: Joan (joan)

@scabug
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scabug commented Sep 29, 2016

@SethTisue said:
I'm not sure this is desirable. The explicit "asInstanceOf" signals an unsafe cast is happening.

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@SethTisue @scabug