Jan-Willem Maessen wrote:
I think that if I can get unsafeFreeze/unsafeThaw to work reliably, it'll finally outperform Data.Map on your example. I haven't yet played with the hash function, which looks kind of bad; there may be hope for improvement there as well.
Great!
User-level Thaw is a bad idea, and I will resist it, even if the library ends up using Freeze/Thaw internally to work around GC shortcomings.
Why is it a bad idea? (I agree completely about unsafeThaw, which seems dangerous, but surely there could be a way to construct a mutable copy of an immutable HashTable? )
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