Is there a particular reason why

AtomicInt

from kotlinx:atomicfu doesn't declare these:

operator fun plusAssign

(+=)

operator fun minusAssign

(-=)

operator fun inc

(++)

operator fun dec

(--) In Java, these couldn't be atomic, but since you can implement them yourself, they would be. For

inc

and

dec

I guess it might be because they would have to return AtomicInt, instead of Int. Asking here because I didn't see an atomicfu channel.

For

inc

and

dec

, it would violate:

The

inc()

and

dec()

functions must return a value, which will be assigned to the variable on which the

++

or

--

operation was used. They shouldn't mutate the object on which the

inc

or

dec

was invoked.

(Emphasis added) https://kotlinlang.org/docs/reference/operator-overloading.html

maybe there should be incAssign then 😂

There was a discussion about that a while ago in #language-proposals: https://kotlinlang.slack.com/archives/C0B9K7EP2/p1558292249060600

I know kotlinfu as used extensively by the coroutines library, I didn't find something more adequate.

The question itself has nothing to do with coroutines, so it may have fit better somewhere like #general, as it more about general Kotlin language functionality and design. Not a huge deal, but good to keep in mind for the future.