because i can have a `data class User(name: String...

# arrow

[addamsson]

because i can have a data class User(name: String = "", age: Int = -1) that's an "empty" container and i can add to it with copy(name="xul")

[raulraja]

The conversation is very interesting but please let’s keep this in a thread instead of the main channel flow.

[addamsson]

sorry

[raulraja]

no worries 🙂

[addamsson]

i fell into a rabbit hole with FP when i tried to contribute to Arrow 😂

[addamsson]

i've been doing research ever since

[addamsson]

would you recommend this book?

[addamsson]

https://bartoszmilewski.com/2014/10/28/category-theory-for-programmers-the-preface/

[raulraja]

that’s a great book and there are also a few others like @marc0der’s upcoming one which is more focused on Kotlin

[addamsson]

so it is not public yet?

[raulraja]

https://www.manning.com/books/functional-programming-in-kotlin

[addamsson]

👍

[julian]

@addamsson There's a pre-release (called a MEAP) version available.

[addamsson]

i'm already reading it! 👍

[julian]

There's also a channel, though not much activity on it so far #fp-in-kotlin.