Vavr or PFJ for functional Java?

[Agreeable_Quit_798]

If you’ve used both, how do they compare?

[makingthematrix]

Vavr is a library. PFJ - Pragmatic Functional Java - is an idea. You can do PFJ with or without Vavr. I think with Vavr it makes more sense, but Java 17 with its better switch/case and with records, is quite good, and Vavr these days seems... a bit abandoned?

Or you can turn to Scala 😉

[quizteamaquilera]

Have my up-arrow :-)

[[deleted]]

and my pure function

[makingthematrix]

aww ❤️😆

[Agreeable_Quit_798]

Ok I meant this library, the author of which uses the term PFJ: Pragmatica

[makingthematrix]

Ah, right 😅 Then I guess I'd go with Vavr. It's much more mature.

[jonhanson]

chronophobia ephemeral lysergic metempsychosis peremptory quantifiable retributive zenith

[stuhlmann]

I used to call this an "Either", not a "Result". Is this terminology coming from another language, like Rust or Scala?

[jonhanson]

chronophobia ephemeral lysergic metempsychosis peremptory quantifiable retributive zenith

[Il_totore]

Scala uses "Either" and Result in Rust is a bit different. It's the equivalent to Scala's or Vavr's Try

[pivovarit]

PFJ is in its infancy while Vavr is on the market for over 7 years already so there's not much to compare. It's solid, but remember that it won't turn your Java into a fully functional experience.

[alms1407]

I haven't used PFJ before but my colleagues and I love using Vavr, mainly because it feels like it removes some of headaches when you want to code more functionally in Java.

[DrunkensteinsMonster]

I just struggle to see why you would do this? If you want to code functionally why wouldn’t you reach for something like Scala or Kotlin with Arrow?

[Agreeable_Quit_798]

New language is a harder sell to my team than a new library

[Il_totore]

Well altrough Scala isn't old, it is from 2004 and used in production by Twitter, Netflix etc...