What's the most idiomatic way to create a configuration class? I could use a simple data class: ```...

# getting-started

[Johann Pardanaud]

What's the most idiomatic way to create a configuration class? I could use a simple data class:

data class Config(val option1: Any, val option2: Any)

Config(
    option1 = ...,
    option2 = ...,
)

But Ktor prefers to use class-like functions, with a lambda coupled to a builder receiver:

Json {
    prettyPrint = true
    isLenient = true
}

What is recommended? Maybe the Ktor approach is more future-proof?

[ephemient]

it's difficult to make ABI-compatible changes to a data class, so if that is a concern, use the builder pattern

[ephemient]

https://jakewharton.com/public-api-challenges-in-kotlin/

[Johann Pardanaud]

Yep, that’s probably what I’m gonna do, thank you 🙂