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by DanWaterworth 4353 days ago
I don't believe GHC actually does implement stream fusion. I think stream fusion happens with rewrite rules.
1 comments
riffraff 4353 days ago
pardon my ignorance, but what would be the difference between the two? Don't rewrite rules happen in GCH anyway?
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DanWaterworth 4352 days ago
Sorry, I should have been clearer. The rewriting happens in GHC, but it's the application programmer who creates the rules. So, stream fusion isn't implemented by the compiler AFAIK.
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riffraff 4352 days ago
ah that makes sense, thanks.
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