best practices for 'Type mismatch' scenarios with polymorphic functions in Scala 3.2.1?
I'm a bit lost with I tried several approaches but none seem to work... I'm stuck trying to I'm working with a 'type mismatch' behavior when trying to implement polymorphic functions in Scala 3.2.1. I have a trait `Container[A]` with a generic method `map` that should apply a function to the contained value. Here's the relevant code snippet: ```scala trait Container[A] { def value: A def map[B](f: A => B): Container[B] } case class Box[A](override val value: A) extends Container[A] { override def map[B](f: A => B): Container[B] = Box(f(value)) } val intBox: Container[Int] = Box(42) val stringBox: Container[String] = intBox.map(_.toString) ``` The code compiles fine, but when I try to execute `stringBox`, I get a type mismatch behavior: ``` Type mismatch, expected: Container[String], actual: Container[Any] ``` I suspect it has to do with Scala's type inference, but I've tried explicitly specifying the types, like this: ```scala val stringBox: Container[String] = intBox.map(_.toString): Container[String] ``` However, this still results in the same type mismatch behavior. I've also checked that my Scala version is correctly set up in sbt with the following in my `build.sbt`: ```scala scalaVersion := "3.2.1" ``` Is there a specific way I should be handling the type conversion in the `map` method to avoid this behavior? Any insights would be greatly appreciated! Any examples would be super helpful. The stack includes Scala and several other technologies.