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> The linear functions/SMC work is really cool, but I am surprised to see the author calling it more mature than the compiling to CCCs work.

TFA doesn't call that more mature, just more workable and a thinner abstraction that presumably compiles to more efficient code than the proc-based alternative.

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Fair. I think I mentally swapped adjectives while composing my response.

Calling the proc stuff not mature might be totally fair when you consider that TFA got almost everything they wanted w/o it and the interface they got is more natural and the compiled code more efficient! Or it might just be fair to say that it is mature and just the wrong tool for TFA's task. I wouldn't know which is the case -- I'm not at the level of making my own categories.

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