Hacker News Reader

The only implementation which is going head on with MRI is JRuby. I've heard from JRuby implementers that keeping the runtime compatible with MRI is an uphill battle. I don't know if AI can help this cause.

View on HN

TruffleRuby is pretty close too, if anything it’s even a bit more compatible because it’s able to run native extensions.

Also keeping compatible with MRI have been made significantly easier by Prism, the new parser that is shared by all implementations.

Thanks for the clarification. I thought Prism is still in beta. Maybe I'm wrong

Nope. It’s been the default MRI parser for a couple years now.

Reply on news.ycombinator.com