is there any way to simplify this? ```update( B(fi...

# getting-started

[Daniele B]

is there any way to simplify this?

update( B(firstField = objA.name, secondField = objB.surname) )

into something similar to this? (it doesn’t work)

update( ::objA )

given that the two classes have the same structure but just different property names?
so that I don’t need to manually specify each field?

val objA = A("John", "Walker")

fun update(obj : B) {
    ...
}

data class A (
    val name : String
    val surname : String
)

data class B (
    val firstField : String
    val secondField : String
)

N.B. I cannot modify the classes definition, by extending or implementing interfaces

[Roukanken]

My question is, if this was possible to make work

what would you expect to happen if someone flips the order of B's or A's properties?

[Roukanken]

because that would break your whole code...

[Roukanken]

if you say the classes hold same data, than easiest way is to just make function A.toB()

which creates B from A , and just use that everywhere

[Roukanken]

(so you would call it like update(objA.toB()) )

[Daniele B]

yes, true, I was just wondering if Kotlin provides something like that, based on the property order, but I guess not

[Roukanken]

afaik not, and even if it did - it's not a good idea, property order changes, boom whole thing stops working

and you wouldn't even see what went wrong

[Daniele B]

yes, I see your point, but in some cases, this would be very handy

[ephemient]

is this a good idea? no.

Untitled

[Daniele B]

definitely not a very concise code,
but interesting to see, thanks!