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You don't need unsafePerformIO for any of these. > Anything that needs rewriting a memory address without losing time by allocation and garbage collection. ST
by pka 10y ago
You don't need unsafePerformIO for any of these.
> Anything that needs rewriting a memory address without losing time by allocation and garbage collection.
ST gives you mutable references. Or just use IO.
- marcosdumay 10y agoYou need it for doing what the OP is talking about.