Hi, is there anything in Kotlin, which will allow ...

# announcements

[sannysanoff]

Hi, is there anything in Kotlin, which will allow me to alias Long, but in a way that it is not implicitly converted, so I never mix Long and my own type?

[Shawn]

sounds like you want inline classes: https://kotlinlang.org/docs/reference/inline-classes.html

[sannysanoff]

Thanks, overlooked that

[sannysanoff]

And what about arrays of it? What's the syntax?

[Shawn]

arrays of.. inline classes? what seems to be the issue?

[Dominaezzz]

You'll want another inline class. inline class MyTypeArray(val array: LongArray) . I'm assuming your talking about avoiding boxing.

[sannysanoff]

Thanks, checking to see how it compiles.

[sannysanoff]

Unfortunately, Array<MyPrimitive> is array of boxed types, and inline class MyPrimitiveArray(val z: LongArray) does not support array operations

[sannysanoff]

so val a = MyPrimitiveArray(LongArray(30)); val sz = a.size is not working

[Dominaezzz]

You have to implement the array functionality yourself. (Someone should make a compiler plugin). Have a look at ULongArray .

[sannysanoff]

ok, and how do i add .map and stuff?

[Dominaezzz]

Implement Collection<MyPrimitive> .

[sannysanoff]

i see, looking at it. Thank you very much!