What's better (faster? more memory efficient?) when creating mutable maps where the insertion order doesn't matter? Use

mutableMapOf()

and

toMutableMap()

which use

LinkedHashMap

or instead

hashMapOf()

and

HashMap(other)

?

hashMap

👍 thanks I guess maintaining the order adds quite noticeable overhead?

Not sure about real performance difference. you may try to find benchmarks. Also it depends on your use case

TreeMap maintains order

No, it's sorts entries :)

well yea, because its a sorted tree inside

But thanks for the intent :)