Are there some comfortable Kotlin (perhaps, online...

# announcements

[ValV]

Are there some comfortable Kotlin (perhaps, online) decompilers? Java decompilers give something like kotlin.jvm.functions.Function0

[gildor]

There are no Kotlin specific decompilers, as I know

[gildor]

Also, what is wrong with Function0? This is how lambda with no params represented on JVM

[GauthierPLM]

https://kotlinlang.org/docs/reference/whatsnew13.html#functions-with-big-arity
Was reading that just now, give an explanation for these weird name

[gildor]

It’s not weird, Lambdas do not exist in bytecode, it’s a name of JVM interface that used to represent lambda

[gildor]

Also, it’s not only for big arity lambdas, Function0 is default interface for any lambda with 0 arguments

[ValV]

Thanks for clarification. That was confusing part of the reversed code

[ValV]

'Cause I've tried JADX, CFR, Fernflower, JAD, JDCore, Procyon -- all of them give (lambdas) Function0/1

[ValV]

What are functuinal types -- are those lambdas only or + something else?

[gildor]

https://kotlinlang.org/docs/reference/lambdas.html#function-types

[gildor]

all of them give (lambdas) Function0/1

Of course, otherwise how it would represent in Java code?

[ValV]

So all those types ((A, B) -> C, A.(B) -> C and suspend () -> Unit) are represented by Function0/1/.../42/... classes, right?

[gildor]

Yes

[gildor]

Just try to access any Kotlin lambda from Java code, it will be the same

[ValV]

Thanks, I'll try ☝️😃