Does anyone have a good resource for learning collections in Kotlin? That is the one place I seem to...

# announcements

[Shane Blackburn]

Does anyone have a good resource for learning collections in Kotlin? That is the one place I seem to really be struggling

[wasyl]

Did you go through the collections section of Kotlin Koans? https://play.kotlinlang.org/koans/Collections/Introduction/Task.kt

[jimn]

fun Shop.getSetOfCustomers(): Set<Customer> = TODO() is just plain bad kotlin.

[Hullaballoonatic]

do you mean because it's better to write as:

val Shop.customers get() = setOf(...)

?

[Hullaballoonatic]

If so, keep in mind this is tutorial. They're trying to help people learn the language fundamentals, and the official kotlin style of doing it would add an extra layer of confusion

[Hullaballoonatic]

styling code is bottom of priority when learning a language

[Hullaballoonatic]

also the name implies the answer is setOf(customers), which is incorrect. A python user might assume that is the way, and they need to learn how casting is done in Kotlin