RBS, Ruby’s new type signature language

(developer.squareup.com)

511 points mootrichard | 1 comments | 29 Jul 20 18:04 UTC | HN request time: 0.208s | source

1. dzonga ◴[29 Jul 20 21:18 UTC] No.23991704[source]▶

best type-checking system in my experience has been F#. You don't even have to declare types.