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Can I write my own streaming fusion in a library in Haskell?

I experimented with the Vector library to see thread merging in action, and this is a very impressive optimization. I am curious to know how difficult it would be to create my own thread merge library? I'm just wondering if there are any special things that I need to do, such as using certain pragmas, etc.

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Fusion is mainly executed by your compiler optimizer under the control of the INLINE / INLINABLE and RULES pragmas.

(Hugs still supported? I guess not.)

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Source: https://habr.com/ru/post/1534668/

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