如何使用 µPickle 序列化通用案例 类？

Question

µPickle docs 说通用案例 类 可以序列化：

Out of the box, uPickle supports writing and reading the following types:

• Stand-alone case classes and case objects, and their generic equivalents,

但是没有给出示例，到目前为止我无法找到正确的方法。我的尝试是：

import upickle.default._

object Container {
  implicit def rw[T]: ReadWriter[Container[T]] = macroRW
}
case class Container[T](value: T)

object Main extends App {
  val c = new Container(0)

  val cString = write(c)
  println("c " + cString)
}

失败并出现错误：

Error:(7, 50) could not find implicit value for parameter e:

upickle.default.Reader[T]

implicit def rw[T]: ReadWriter[Container[T]] = macroRW

如何使用 µPickle 序列化一般案例 类？

Answer 1

不要忘记使用上下文绑定

implicit def rw[T: ReadWriter]: ReadWriter[Container[T]] = macroRW