Hello guys I have a question regarding the flatmap...

# android

[Taha]

Hello guys I have a question regarding the flatmap for kotlin and rxjava2.

I have an observable of a data class that has a nested list

fun getCenterServiceCategories() : Single<CenterServiceCategories>
// ..
data class CenterServiceCategories(
    val meta: MetaResponse,
    val data: List<ServiceCategory>
)

what I want to do
The ServiceCategory also has a list of ids that I want to loop through and eventually return a flatmap that has the list of categories with their services embedded.

The problem is that I cannot call

getCenterServiceCategories().flatmap{ 
//...
}

since the list is actually the data property.
i have tried subscribing and getting the data onSubscribe and using Kotlins map and flatmap, but I want to do that with RX

any suggestions?

[Luca Nicoletti]

Why can’t you do that? inside the flatmap{} you can cycle though the list and do whatever you want

[Taha]

Hey Luca, the list I need to loop through is CenterServiceCategories>data

[Luca Nicoletti]

Yep exactly, inside the flatmap{} you can do it.data.forEach{}

[Luca Nicoletti]

and cycle through the list