Delimited Continuations as Library

[altbodhi]

Are there any plans to implement shift/reset and callCC in lang-ext?
I read Kenichi Asai Delimited Continuations for Everyone. And it promise simplest than monad for same things.

[louthy]

Eventually, yes, the raw outline of ContT is already in the library, but the work is incomplete. I may get to it before the v5 release, but I doubt it...
My current priority is getting the library ready for the v5 RTM. The roadmap currently looks like this:

• Implement LanguageExt.Megaparsec (improved version of LanguageExt.Parsec)
• Fix nullable warnings for LanguageExt.Parsec
• Improve unit test coverage for new v5 features
• Write a ton of documentation for v5 release
• Release v5
• Spend at least 6 months picking up the pieces of the v5 release (probably)!

So, right now, there won't be much movement on any new features other than Megaparsec (which I'm doing to avoid a potentially problematic refactor of Parsec).

[StefanBertels]

OT: Will next generation of Parsec make use of Span<char> (for performance reasons)?
Internally (writing parsers...) and when calling parse(...)?

[louthy]

@StefanBertels I've written an expanded response here, but the short answer is yes and much more!