My permutation code let me find a kotlin compiler ...

# advent-of-code

[Burkhard]

My permutation code let me find a kotlin compiler bug 😦 https://youtrack.jetbrains.com/issue/KT-35337?project=kt

[Kroppeb]

Sequence can't always be iterated over multiple times

[Burkhard]

Your right. It should probably be List<T>.permutations. But this still crashes the kotlin compiler.
My guess is that something goes wrong with the recursion combined with coroutines.

[Kroppeb]

What coroutines?

[Burkhard]

I’m pretty sure the sequence builder function uses the suspend functionality to work.

[Kroppeb]

Oh, right