Torturing Rustc by Emulating HKTs

2 comments

• j-krieger 1 hour ago
  I also hit a funny compiler end-of-the road last month when I wanted to try out generic_const_exprs for my RFC8366 implementation:

    pub struct VoucherDetails<C>
      where
        C: CapacityConfig,
        [(); C::SERIAL_NUMBER_MAX]:,
        [(); C::MANUFACTURER_PRIVATE_MAX]:,
        [(); C::IDEVID_ISSUER_MAX]:,
        // <imagine a dozen more properties here>
        [(); C::NONCE_B64_MAX]:,
    { ... }
  

  The heavy const eval + trait resolution was too much even for my M2 Pro.
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  • amluto 6 minutes ago
    Nice.

    You inspired me to look up RFC8366. That's a remarkable document, apparently written in English, where at least the abstract and introduction look like they might be the result of a particularly nerdy game of Mad-Libs. :)

    I, personally, have never observed a pledge doing anything other than being heard, although I observed Lemon Pledge smelling unpleasant. But, in RFC8366, pledges can join domains!

    (I assume that a manufacturer makes a device and the device somehow contains a "pledge" from the manufacturer that the device is what it says it is...)
• cptroot 2 hours ago
  This was incredible, even as it rapidly outpaced my PL and mathematics knowledge.
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  • PeterWhittaker 2 hours ago
    Like I said to a friend, I know just enough category theory to know that I do not understand. Perhaps upon Nth reading.