> (e.g., `ByteString.map (+ value)` is incredibly slow compared to a pseudo-C lo... | Hacker News

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codygman on May 5, 2017 | parent | context | favorite | on: I tried Haskell for 5 years

> (e.g., `ByteString.map (+ value)` is incredibly slow compared to a pseudo-C loop).

That situation sounds like you needed a ByteString Builder to get comparable performance.

luispedrocoelho on May 5, 2017 [–]

Maybe, but pseudo-C actually worked very well.

I even have some "real C" in my Haskell code to handle some inner loop stuff.

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