This might be a dumb question but where are the method bodie kotlinlang #getting-started

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Title

Florian

06/20/2019, 9:31 PM

This might be a dumb question but where are the method bodies for the operators functions inside Primitives.kt

karelpeeters

06/20/2019, 9:39 PM

As I said (https://kotlinlang.slack.com/archives/C0B8MA7FA/p1561059246214900?thread_ts=1560978823.192000&cid=C0B8MA7FA), they don't have bodies, they're compiler intrinsics. They just end up as single inlined bytecode instructions on the JVM.

Florian

06/20/2019, 9:42 PM

Sorry I didn't see that

that was my assumption

thanks

karelpeeters

06/20/2019, 9:42 PM

But now I do want to know where that code is in the compiler 😄

Florian

06/20/2019, 9:43 PM

do you know any examples in the stdlib that have operators functions with bodies?

karelpeeters

06/20/2019, 10:17 PM

Lists, BigInteger, BigDecimal, Arrays, String.

Florian

06/21/2019, 9:04 AM

ok thanks

No, the String class also doesn't have a body

for plus

neither does List

BigDecimal doesnt have any operator funs at all

karelpeeters

06/21/2019, 1:02 PM

Arrays: https://github.com/JetBrains/kotlin/blob/master/libraries/stdlib/jvm/src/generated/_ArraysJvm.kt#L1445 List: https://github.com/JetBrains/kotlin/blob/master/libraries/stdlib/common/src/generated/_Collections.kt#L2023 BigInteger: https://github.com/JetBrains/kotlin/blob/master/libraries/stdlib/jvm/src/kotlin/util/BigIntegers.kt#L19

You're right, I can't find one for strings.

Florian

06/21/2019, 1:24 PM

thanks

for some reason they are not like this when I open them in IntelliJ

karelpeeters

06/21/2019, 1:27 PM

They are for me, I just did

Ctrl+B

on the

in this code:

val x = arrayOf(1,2,3) + arrayOf(4,5,6)
val y = listOf(1,2,3) + listOf(4,5,6)

Florian

06/21/2019, 2:05 PM

yea that works

karelpeeters

06/21/2019, 2:05 PM

What didn't work then?

Florian

06/21/2019, 2:19 PM

BigInteger doesnt have this function in my source code

karelpeeters

06/21/2019, 2:20 PM

Where does

Ctrl+B

val z = BigInteger.ONE + BigInteger.ONE

get you?

Florian

06/21/2019, 2:28 PM

Oops, I ended up in the Java package

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