Haktoberfest is a nice idea with a terrible execution. Letting repos opt in would basically solve the spam problem.

I just verified that an S-expression parser recognizes only S-expressions.

Implementation: 250 LOC
Spec: 125 LOC
Proof: 700 LOC

github.com/lysxia/coq-ceres

Apparently parser combinators in total languages with dependent types is still a widely open research problem. Projects that need parsing just roll their own stuff, and rarely verify it...

github.com/gallais/agdarsec

To git rebase whenever you pull, add in ~/.gitconfig :

[pull]
rebase = true

Communication is hard. I don't want to sound like an obnoxious smartass when disagreeing with someone at work.

I just realized I have a Windows machine, that I could use to test the portability of stuff. I didn't realize earlier because I spend so much time in a Linux VM...

coqdoc is packaged as part of Coq, so projects stuck on older versions don't benefit from bugfixes and new features. That's sad. I've been wanting to split it off[1] but actually the whole thing should be redesigned from scratch[2] so it doesn't seem worth it to break things only to break them again shortly after.

[1] github.com/coq/coq/issues/1059
[2] A related discussion coq.discourse.group/t/would-co and an idea floating around is to build something on top of OCaml's odoc.

lyxia boosted
lyxia boosted

Proving Algebraic Datatypes are “Algebraic” in #Coq
soap.coffee/~lthms/posts/Algeb

It was fun to write, hope you enjoy reading it. I tried to spellcheck it, but tbh I wouldn’t be surprise to find mistakes… If you notice some, feel free to tell me!

woohoo, 4h to the deadline, arguing with coauthors about whether a proof is correct (luckily entirely nonessential either way)...

lyxia boosted

I’ve finally started to work on my next blogpost: Why algebraic datatypes are “algebraic,” explained.

Inspired by @na and her nice write-up (in French, here blog.gelez.xyz/type-produit/)

Proofs are done[§], I need to actually write the explanation now x).

[§]: gist.github.com/lthms/8f93f3c4

lyxia boosted
lyxia boosted

Goldman's new "free" typeface has a license that prevents you from using it to criticize Goldman Sachs.

Whoops

lyxia boosted

HTTP status emojis:

- 200 👍
- 201 🆕
- 301 👉
- 400 👎
- 401 🔒
- 402 💰
- 403 🚫
- 404 🤷‍♂️
- 408 ⌛️
- 410 💨
- 418 🍵
- 500 💩

(via francesc)

lyxia boosted

Il y a deux types d'escargots : les escargots avec habitat, et les escargots sans habitat… Mais ceux-là, on les appelle des limaces.

Parmi les escargots avec habitat, il y a deux types d'escargots : les escargots sans rayures, et les escargots avec rayures… Mais ceux-là, on les appelle des berlingots.

Cependant, nous distinguons les escargots avec habitat sans rayure sphériques, des escargots avec habitat sans rayure non sphériques. Mais ceux-là on les appelle des galets.

Il faut noter qu'il existe deux types de berlingots : les berlingots lévogyres et les berlingots dextrogyres… Mais ceux-là on les appelles des sucettes.

Nous vous devons de vous informer que nous distinguons deux types de galets : les galets blancs et les galets jaunes… Mais ceux-là on les appelle des sablés bretons.

Revenons à nos limaces, il existe deux espèces de limaces : les limaces marrons et les limaces oranges, mais celles-là on les appelle des rustines (aussi appelé chewing gum fruit de la passion).

Parmi les sablés bretons, nous trouvons les sablés bretons sans œuf et les sablés bretons avec œuf… Mais ceux-là, on les appelle omelette.

Il existe deux types d'omelettes : les omelettes bien cuites et les omelettes baveuses. Mais celles-là, on les appelle escargots.

-florian66-

lyxia boosted
lyxia boosted

Vous connaissez un endroit ou les films / séries ont un score en fonction de leur taux de perpétuation des stéréotypes de genre ?

Ça saoule, a force.

Adding more threads slows my program down. 😱

lyxia boosted

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