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2021-05-31 16:32:38 × myShoggoth quits (~myShoggot@97-120-89-117.ptld.qwest.net) (Ping timeout: 252 seconds)
2021-05-31 16:32:40 × chomwitt quits (~Pitsikoko@athedsl-20549.home.otenet.gr) (Ping timeout: 268 seconds)
2021-05-31 16:32:45 <tomsmeding> you also get the ability to print out proofs that way :)
2021-05-31 16:33:05 <bor0> Ah! :) Yeah.. Proofs right now are just basically Haskell functions
2021-05-31 16:33:18 <bor0> I get to use all the fancy stuff like let = ... etc for free
2021-05-31 16:33:26 <tomsmeding> Maybe there's a way to ensure your implementation never goes wrong, but I think it's a very risky endeavour :)
2021-05-31 16:33:29 <bor0> But it seems it isn't really for free..
2021-05-31 16:33:36 <tomsmeding> yeah
2021-05-31 16:33:51 wroathe joins (~wroathe@c-68-54-25-135.hsd1.mn.comcast.net)
2021-05-31 16:34:08 <tomsmeding> I have to go though; good luck :)
2021-05-31 16:34:35 <bor0> Thank you! Discussion was great. I will look into the bits you suggested earlier and see if it's easy to incorporate some of them with small refactors :)
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2021-05-31 16:36:59 <ski> bor0 : `whenRight' is called `(>>=)'
2021-05-31 16:37:29 <ski> @src Either (>>=)
2021-05-31 16:37:29 <lambdabot> Left l >>= _ = Left l
2021-05-31 16:37:29 <lambdabot> Right r >>= k = k r
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2021-05-31 16:38:05 × oxide quits (~lambda@user/oxide) (Ping timeout: 264 seconds)
2021-05-31 16:38:07 <bor0> Hah. I now need to rewrite all the examples! :D Thanks ski. That's definitely an improvement!
2021-05-31 16:39:18 × wroathe quits (~wroathe@c-68-54-25-135.hsd1.mn.comcast.net) (Ping timeout: 264 seconds)
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2021-05-31 16:41:00 <ski> it seems like `applyFOLRule' should perhaps allow its callback to possibly fail .. if it's going to be an arbitrary (uninspectable) Haskell function
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2021-05-31 16:46:55 <kuribas``> Why does cassava have so crappy error handling?
2021-05-31 16:46:56 <bor0> What if `go` keeps track of the bound variables, and if one of those appear in `x` within https://github.com/bor0/hoare-imp/blob/master/src/TNT.hs#L65 then just error?
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2021-05-31 16:47:41 <bor0> That's probably too strict...
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2021-05-31 17:01:29 × sciencentistguy quits (~sciencent@194.110.13.3) (Ping timeout: 264 seconds)
2021-05-31 17:02:25 <ski> bor0 : fwiw, i dunno why "Using `applyFOLRule` within `applyFOLRule` is not allowed."
2021-05-31 17:02:45 <bor0> It's a temporary patch to avoid this error :)
2021-05-31 17:02:58 <ski> it seems to me it would naturally satisfy a distributive law
2021-05-31 17:03:01 <bor0> (Until I/we get it right xD)
2021-05-31 17:03:17 <dminuoso> kuribas``: No idea, but it's a recurring theme.
2021-05-31 17:03:23 <dminuoso> Perhaps you can help and improve it?
2021-05-31 17:03:56 <kuribas``> dminuoso: if they don't mind breaking changes...
2021-05-31 17:04:08 shiraeeshi joins (~shiraeesh@109.166.59.30)
2021-05-31 17:04:26 <ski> bor0 : a minor thing, there's no need to pass `f' as a parameter to `go'
2021-05-31 17:04:43 <ski> (since it never changes)
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2021-05-31 17:05:00 <kuribas``> dminuoso: for example, FromNamedRecord returning a structured error, with column and row information
2021-05-31 17:05:17 <dminuoso> kuribas``: I suspect the poor diagnostics is from ruthless usage of attoparsec. :-)
2021-05-31 17:05:34 <ski> (you will need `ScopedTypeVariables' to have a type signature on `go', though, if you go for that)
2021-05-31 17:06:00 <kuribas``> dminuoso: that could be it...
2021-05-31 17:06:46 × nschoe quits (~quassel@2a04:cec0:118b:9ec7:45a:fcee:e159:4f31) (Ping timeout: 265 seconds)
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2021-05-31 17:08:02 <ski> bor0 : where's `PropCalc' and `FOL' (and `Arith') defined ?
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2021-05-31 17:08:29 dpl_ joins (~dpl@77-121-78-163.chn.volia.net)
2021-05-31 17:08:30 <bor0> https://github.com/bor0/hoare-imp/blob/master/src/Gentzen.hs and https://github.com/bor0/hoare-imp/blob/master/src/TNT.hs
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2021-05-31 17:09:25 <dminuoso> kuribas``: Realistically the only thing you can do in attoparsec, is decorate stuff with (<?>)
2021-05-31 17:09:56 notzmv joins (~zmv@user/notzmv)
2021-05-31 17:09:59 <kuribas``> dminuoso: still, adding column and row info seems very doable...
2021-05-31 17:10:16 <kuribas``> dminuoso: as attoparsec only needs to split the rows into columns.
2021-05-31 17:10:32 peach joins (sid482179@id-482179.charlton.irccloud.com)
2021-05-31 17:10:46 <dminuoso> kuribas``: column/row info?
2021-05-31 17:10:55 <dminuoso> How can you even track that?
2021-05-31 17:11:12 <dminuoso> This is not megaparsec where you can add some monadic state
2021-05-31 17:11:31 × dpl quits (~dpl@77-121-78-163.chn.volia.net) (Ping timeout: 268 seconds)
2021-05-31 17:11:48 <kuribas``> dminuoso: parse in two steps, step one is split row into fields
2021-05-31 17:11:54 <kuribas``> as a list
2021-05-31 17:11:58 <bor0> ski, Interestingly, applyPropRule doesn't seem to have the same defect https://github.com/bor0/hoare-imp/blob/master/src/Gentzen.hs#L31. Likely because it doesn't have any support for quantifiers
2021-05-31 17:12:01 <kuribas``> then parse each list
2021-05-31 17:12:03 brandonh joins (~brandonh@151.38.139.116)
2021-05-31 17:12:06 <kuribas``> list element
2021-05-31 17:12:21 <dminuoso> kuribas``: I suspect this drastically impact performance
2021-05-31 17:12:35 <dminuoso> Since you'd be running many tiny attoparsec parsers for each row
2021-05-31 17:12:55 <kuribas``> I would care more about good errors than blazing performance
2021-05-31 17:13:53 <dminuoso> Then your goals are incompatible with cassavas goal, which strives to be competitive with pythons 'cvs'
2021-05-31 17:13:55 <dminuoso> *csv
2021-05-31 17:14:45 <dminuoso> kuribas``: What one could do, is rework `cassava` to work with `parsers` perhaps, so you can re-parse with trifecta and generate better error messages?
2021-05-31 17:14:51 <dminuoso> Im not sure how viable this is, though.
2021-05-31 17:15:25 <kuribas``> I suppose I could parse into (Vector (Vector ByteString)), then use my own parser ByteString -> a
2021-05-31 17:15:38 <kuribas``> that would not be so hard to implement
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