[Haskell-cafe] Simplest way to move a ... `using` ... line into the IO monad?

[David Banas]

Hi all,

What is the simplest way to translate a non-monadic line of Haskell code, such as:

res = map foo xs `using` parList rseq

For use in the IO monad?

This doesn’t work:

res <- mapM fooM xs `using` parTraversable rseq

complaining:

No Traversable instance for IO.

Thanks,
-db

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