is this CORS code too "clever" ? ``` val header = ...

# announcements

[tipsy]

is this CORS code too "clever" ?

val header = ctx.header("Origin") ?: ctx.header("Referer") ?: return
origins.filter { header.startsWith(it) }.firstOrNull()?.let {
    ctx.header("Access-Control-Allow-Origin", it)
}

[poohbar]

yeah

[poohbar]

It's not obvious to me what are you doing.

[dmitry.petrov]

You can do origins.firstOrNull { header.startsWith(it) } instead of filter + firstOrNull

[tipsy]

@dmitry.petrov thanks, that helps a lot. is the chained elvis common/acceptable ?

[dmitry.petrov]

Yeah, that's fine. I write similar code myself.

[tipsy]

great, thanks