Hello, I am trying to use the Stately's Isolate Collections library. However when I'm trying to iter...

# kotlin-native

[Mohit Khanna]

Hello,
I am trying to use the Stately's Isolate Collections library. However when I'm trying to iterate over an IsoMutableMap, then I get crash saying UnsupportedOperationException("Can't leak mutable reference").
In the IsoMutableMap.kt, this operations is blocked as below. Can someone share why 'entries' can leak mutable reference but not the 'values'? Also, Is there any other way to iterate over the entry set?

override val entries: MutableSet<MutableMap.MutableEntry<K, V>>
    get() {
        throw UnsupportedOperationException("Can't leak mutable reference")
        // access { IsoMutableSet(fork(it.entries)) }
    }

Thanks!

[kpgalligan]

There was a reason. I wrote that 🙂

[kpgalligan]

I remember. The default implementation of MutableMap.MutableEntry retains a reference to it's parent. Stepping through that would likely try to return an instance of MutableMap.MutableEntry across threads, which will crash. To properly implement entries, we'd need to wrap the MutableSet<MutableMap.MutableEntry<K, V>> result