I wish i had linked one here not so long ago, but for the past month I have been buried under a mountain of work

Hey guys, this project seems to be really cool! https://github.com/JorgeCastilloPrz/ArrowAndroidSamples Are there any articles related to this type of project? I wanted to learn more about how to use this approach to develop Android apps.

it should be straightforward, just remove the final property from fields here: https://bit.ly/2LozIWO

Hi. I've noticed that with functions returning

Unit

, monad comprehensions can lead to a somewhat confusing behaviour:

g(): TUnit = TODO()
f() = fx { g() }
f0() = fx { g().bind() }

Both

f

and

f0

return

TUnit

for any given

T

, but have different semantics. Is there any way, apart from introducing my own

MyUnit

object

that I can guard against accidental omission of

.bind()

?

but i didnt see the gotchas section of Either casting documentation if there is one

There is

EqK

, no?

How would one implement publish subscribe / concurrency in a functional (arrow) way?

Either.catch gives me result type , which I still need to map to the service type which is either which I cant change at this momement.

Has anyone written a Gson wrapper for Arrow types?

And that was in an empty Kotlin project

I already read it and it is my next option 😁

type-graphs seem like the domain of haskell/arrow, though the java type-graph example i have sort of autocompletes automatically in intellij.

this n*m seems to be the exact thing bartos milleiw (sp?) addresses in his very first lecture.

ListK.parTraverse

will give me some (default) concurrency, right?

I am starting a new project in my company with arrow

0.10.3

and considering helios for JSON parsing. But it looks like helios is on old dependencies. Would arrow maintainers still recommend using it in production? functional way and benchmarks are really tempting.

I haven't kept up to date. what is the recommended way of doing a two response left error (non throwable), right result and using fx/comprehensions?

Hi, could someone please help me find the Arrow 'way' of doing Applicative:

*>

and

<*

? -> https://hackage.haskell.org/package/base-4.12.0.0/docs/Prelude.html#v:-42--62- I'm trying to implement/follow in Arrow.

Hi all! I have a question about the new union types: will arrow completely do away with

Option

and

Either

in the future, or will they co-exist with unions?

Hi @here I will be heading a Kotlin summit in Egypt and am asking if you have Arrow resources or slides to share to introduce Arrow to the developers in MENA

I have published a Reference Guide for Arrow-fx 0.10 to get you started! It covers everything from the basics of wrapping suspend functions and parallelism, to advanced use cases like safe resource management and program structure 📝 https://twitter.com/pacoworks/status/1206507788043718657

Hey everyone, I recently joined the kotlin slack group only to see how arrow is progressing and excited to build android apps with it. You guys are doing a great job 👏. I have few questions regarding arrow library: 1) I come from the OOP world but have a year of experience with Kotlin. How can I get started learning arrow step by step? 2) Are there any plans to make a public online training service? 3) When arrow will reach v1.0? Looking forward to using arrow and enjoy the benefits of it. ❤️ Thanks again.

@PPWasin ask away!

Threads please 😘

Hi, is there support for partial application of

suspended

functions? This does not compile:

import arrow.syntax.function.invoke

suspend fun add(one: Int, two: Int) = one + two

suspend fun addOne(value: Int) = (::add)(p1 = 1)

suspend fun addTwo(value: Int) = (::add).partially1(2)

e.g. elvis,if,when AST popups ... and sadly only a handful of others

Hey there, question, what kind of API stability guarantees are there between ArrowKT versions? I noticed that the library is at v0.10.xx, is there an understanding that v1.0 can be breaking? Thanks!

so effect is a constructor, and ! is a way of executing it, an alias to

bind

@Sagar Suri Hi! I'm glad you asked that. Me and a few folks have been thinking about practical programming education with Arrow. I'm a CTO in Chicago who's very enthusiastic about FP and Arrow. We're starting up a new podcast and blog that will include discussions and tutorials on practical functional programming with Arrow. I'm also currently running a startup, and we are planning to implement Arrow in our product. We have decided to create a documentary about our startup, and how Arrow is helping us maintain sanity. In the interest of helping promote FP + Arrow, I wanted to reach out and see if anyone is interested in interviewing with us on our podcast. Remote discussions are an option, but we're also willing to travel to interview folks! We are hoping to help bring stronger awareness to FP and Arrow - benefits, challenges and how to design a functional system with Arrow. The podcast is launching early next year at http://lambda.show. If anyone's interested, please feel free to reach out to me! You can reach me here on kotlinlang or by email: mattmoore@lambda.show. My twitter handle is mattmoore_io. We're very friendly, and would be more than happy to speak with folks from any background who have a passion for FP with Arrow.

Hello! I am looking for something like this in Kotlin Arrow. How can I accomplish the same with a list of

Some

values?