Cats Effect 3: Racing IOs (and Fibers)

[@MrRobmango]

Thanks for doing videos on cats effect 3 and scala 3, it goes great with my morning coffee 🤘🏼☕

[@rockthejvm]

More to come!

[@alexandersviridov8682]

Thank You! I'm struggling with cats-effect and these videos are of great help for me.

[@hermannhueck7250]

Nice video (I like it), but one small thing: *> is NOT sequencing/flatMap. *> is an alias for Applicative#productR (exactly: Apply#productR) >> is an alias for Monad#flatMap, where the input is ignored (exactly: FlatMap#flatMap) These two are semantically different. But in many cases you can use them interchangably.

[@konstiblum]

beware that the .debug method is now part of cats, so you might want to name your debug method differently to avoid a compilation error

[@rockthejvm]

👍

[@vicaba02]

👍

[@villenita]

Really useful, thanks for another quick practical intro to new stuff.

[@rockthejvm]

Glad it helps!

[@ollikortelahti]

Thanks for the great video! Is there a reason you use flatMap instead of map when pattern matching with race and racePair?

[@rockthejvm]

It's because we'd like to return different effects instead of different values.

[@mdfitumi]

Is it possible to run 1+ fibers concurrently on the same thread?

[@rockthejvm]

You can run 100000+ fibers on the same native thread.

[@tylerweirtube]

Great concise video. 👍

[@rockthejvm]

:D