really simple question. Trying to create a java object that requires setters to be called. Is this t...

# getting-started

[Wesley Acheson]

really simple question. Trying to create a java object that requires setters to be called. Is this the right pattern to use or not

val jsonHeader = HttpHeaders().let {
        it.accept = listOf(MediaType.APPLICATION_JSON)
        it
    }

[Tobias Berger]

Possible, but you should probalby go for

val jsonHeader = HttpHeaders().apply {
    accept = listOf(MediaType.APPLICATION_JSON)
}

[Wesley Acheson]

Nice. Thanks

[Wesley Acheson]

That also cleans up some when blocks I had so thats a bonus.

[frogger]

real kotlin programmers just try let/accept/also/… until it works

[Tobias Berger]

or until this works 😉

[Cyril Truchi]

This saved my life : https://proandroiddev.com/the-difference-between-kotlins-functions-let-apply-with-run-and-else-ca51a4c696b8 🙂

[Cyril Truchi]

Especially the table in the end

[Tobias Berger]

seriously though: let/also/apply/run can be really useful. Don't guess, learn what they do and use the one you think is most apropriate for your code

[Wesley Acheson]

I've mostly just been writing java like code. I guess.

[Tobias Berger]

@Cyril Truchi I actually prefer the official documentation: https://kotlinlang.org/docs/reference/scope-functions.html which got a lot better since that article was written

[Tobias Berger]

@Wesley Acheson I'm sure you'll get into the kotlin style. Trust me, you will not want to go back to java once you got used to writing kotlin - even if it's just about all the ?

[Wesley Acheson]

No I don't want to go back. I've had groovy people claim that.

[Wesley Acheson]

I've had scala people claim that. (and nearly believed them)

[Cyril Truchi]

@Tobias Berger Oh you're right, thanks

[Wesley Acheson]

I would like scala but not with the other people I work with.