[esarbe]

In the Scala 2.x this can be done with an implicit class.

It's a bit cumbersome and not very use-case oriented (mechanism over intention) and so Scala 3 has introduced extension methods[0].

This gives you exactly what you want.

Since Scala 3 is pretty much completely backwards compatible (and with the use of Tasty you can use Scala 3 code in Scala 2.x projects), so I don't see the migration as a big problem. The Scala team has spent a lot of work to make the transition as painless as possible.

[0] https://dotty.epfl.ch/docs/reference/contextual/extension-me...

[ph2082]

Thank you for URL. Just when I needed. Any idea when "Scala 3" can be production ready ?

[esarbe]

From what I saw in the latest presentation by Martin, we can expect Scala 3 to be released in late Spring/early Summer 2021.

Part of the release testing is building the community release[0], which is a large part of the relevant Scala F/OSS code out there.

Whether you consider that to be production ready you have to decide for yourself, I myself am pretty happy about it.

Keep in mind that for now Scala 2 style code will still be compiled and you can use existing Scala 2 code in your Scala 3 project. The migration should be pretty smooth.

[0] https://github.com/scala/community-build