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fix errors of code in "Explicit term inference" article #1178

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fix errors of code in "Explicit term inference" article #1178

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6 changes: 3 additions & 3 deletions _posts/2020-11-06-explicit-term-inference-in-scala-3.md
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Original file line number Diff line number Diff line change
Expand Up @@ -370,7 +370,7 @@ The second step was to define the extension method which relies on two implicits
```scala
// ShowOps.scala
object ShowOps {
implicit class showOps[A](in: A) extends AnyVal {
implicit class showOps[A](private val in: A) extends AnyVal {
def show(implicit instance: Show[A]): String =
instance.show(in)
}
Expand All @@ -386,7 +386,7 @@ object Show {

// Either this or import ShowOps and use context bound
implicit def showList[A](ls: List[A])(implicit instance: Show[A]) =
ls.map(instance.show).mkList(",")
ls.map(instance.show).mkString(",")
}
```
which brings us to the main definition:
Expand All @@ -399,7 +399,7 @@ case class Mountain(name: String, height: Int)

object Main extends App {
implicit val mountainShow: Show[Mountain] =
Show.fromFunction((m: Mountain) => s"The ${m.name} is ${m.height} meters high")
Show.from((m: Mountain) => s"The ${m.name} is ${m.height} meters high")
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@vitojeng vitojeng Nov 17, 2020 •
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Compare with the line 383, the method name should be from


val mountains = List(Mountain("Mont Blanc", 4808), Mountain("Matterhon", 4478))
println(mountains.show)
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