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  • a

    addamsson

    12/08/2019, 1:23 PM
    can i use typeclasses in kotlin without arrow?
  • a

    addamsson

    12/08/2019, 1:24 PM
    i thought that this was the promise of keep-87
  • s

    simon.vergauwen

    12/08/2019, 1:24 PM
    Yes, it’s just a compiler plugin
  • a

    addamsson

    12/08/2019, 1:24 PM
    is this going to be a language feature?
  • s

    simon.vergauwen

    12/08/2019, 1:24 PM
    Arrow-meta is unrelated to Arrow it’s build within the same OSS organisation
  • s

    simon.vergauwen

    12/08/2019, 1:25 PM
    With Arrow meta we will offer some compiler plugins such as typeclasses and unions types etc on an opt in basses
  • a

    addamsson

    12/08/2019, 1:25 PM
    damn
  • s

    simon.vergauwen

    12/08/2019, 1:25 PM
    We hope it make it into the language, and then we will deprecate and remove it as plugins
  • a

    addamsson

    12/08/2019, 1:25 PM
    i was so psyched
  • a

    addamsson

    12/08/2019, 1:25 PM
    i thought this was going to be in 1.4 😞
  • s

    simon.vergauwen

    12/08/2019, 1:25 PM
    But Jetbrains made no comment on the KEEP-87 question during the answer panel
  • a

    addamsson

    12/08/2019, 1:26 PM
    😞
  • a

    addamsson

    12/08/2019, 1:26 PM
    is Arrow / Arrow Meta MPP yet?
  • s

    simon.vergauwen

    12/08/2019, 1:26 PM
    It was a highly requested feature during the QA section
  • s

    simon.vergauwen

    12/08/2019, 1:27 PM
    With Kotlin 1.4 Arrow Meta can work fully with IR and with that we can implement Arrow MPP
  • a

    addamsson

    12/08/2019, 1:27 PM
    damn
  • s

    simon.vergauwen

    12/08/2019, 1:27 PM
    But we might do it sooner
  • a

    addamsson

    12/08/2019, 1:28 PM
    what's IR?
  • s

    simon.vergauwen

    12/08/2019, 1:28 PM
    Intermediate representation.
  • s

    simon.vergauwen

    12/08/2019, 1:28 PM
    Currently the compiler uses ASM for JVM and IR for JS/Native.
  • s

    simon.vergauwen

    12/08/2019, 1:29 PM
    Currently IR is unfinished but in 1.4 it will be finished for all 3 platforms
  • s

    simon.vergauwen

    12/08/2019, 1:29 PM
    Which means it might become much simpler to build compiler plugins. The internals of Arrow Meta will also become simpler
  • s

    simon.vergauwen

    12/08/2019, 1:29 PM
    But with the current impl of Arrow Meta with the quotes we can already do MPP HKTs
  • a

    addamsson

    12/08/2019, 1:30 PM
    i see
  • s

    simon.vergauwen

    12/08/2019, 1:30 PM
    So we can implement it for Arrow-core and release an MPP version and release it sooner
  • a

    addamsson

    12/08/2019, 1:30 PM
    my problem is that all my stuff is MPP and I can't use Arrow
  • a

    addamsson

    12/08/2019, 1:30 PM
    that's why I hoped typeclasses will get into the language in 1.4
  • s

    simon.vergauwen

    12/08/2019, 1:30 PM
    If you’re doing only MPP then I think you can use the typeclasses since they’re build on IR
  • a

    addamsson

    12/08/2019, 1:31 PM
    what do you mean by "only MPP"?
  • s

    simon.vergauwen

    12/08/2019, 1:31 PM
    But @raulraja can give you a more precise answer there but IIRC MPP only works with IR.
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