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Use EmptyTuple instead of Unit in typeclass derivation docs #9431

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Merged
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Jul 27, 2020
Merged

Use EmptyTuple instead of Unit in typeclass derivation docs #9431

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03239fe
Use EmptyTuple instead of Unit
ysthakur Jul 25, 2020
baa4897
Use EmptyTuple instead of Unit again
ysthakur Jul 25, 2020
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6 changes: 3 additions & 3 deletions docs/docs/reference/contextual/derivation-macro.md
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Original file line number Diff line number Diff line change
Expand Up @@ -95,7 +95,7 @@ have the given instances for our primitive types:
case '[String *: $tpes] => '{ summon[Eq[String]] } :: summonAll(tpes)
case '[Int *: $tpes] => '{ summon[Eq[Int]] } :: summonAll(tpes)
case '[$tpe *: $tpes] => derived(using tpe, qctx) :: summonAll(tpes)
case '[Unit] => Nil
case '[EmptyTuple] => Nil
}
```

Expand Down Expand Up @@ -173,7 +173,7 @@ object Eq {
case '[String *: $tpes] => '{ summon[Eq[String]] } :: summonAll(tpes)
case '[Int *: $tpes] => '{ summon[Eq[Int]] } :: summonAll(tpes)
case '[$tpe *: $tpes] => derived(using tpe, qctx) :: summonAll(tpes)
case '[Unit] => Nil
case '[EmptyTuple] => Nil
}

given derived[T: Type](using qctx: QuoteContext) as Expr[Eq[T]] = {
Expand Down Expand Up @@ -222,4 +222,4 @@ object Macro3 {

implicit inline def eqGen[T]: Eq[T] = ${ Eq.derived[T] }
}
```
```
4 changes: 2 additions & 2 deletions docs/docs/reference/contextual/derivation.md
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Expand Up @@ -200,7 +200,7 @@ implementation of `summonAll` is `inline` and uses Dotty's `summonInline` constr
```scala

inline def summonAll[T <: Tuple]: List[Eq[_]] = inline erasedValue[T] match {
case _: Unit => Nil
case _: EmptyTuple => Nil
case _: (t *: ts) => summonInline[Eq[t]] :: summonAll[ts]
}
```
Expand Down Expand Up @@ -244,7 +244,7 @@ import scala.deriving._
import scala.compiletime.{erasedValue, summonInline}

inline def summonAll[T <: Tuple]: List[Eq[_]] = inline erasedValue[T] match {
case _: Unit => Nil
case _: EmptyTuple => Nil
case _: (t *: ts) => summonInline[Eq[t]] :: summonAll[ts]
}

Expand Down