miso
Agda
miso  Agda  

18  27  
2,182  2,460  
  1.3%  
6.4  9.9  
2 months ago  6 days ago  
Haskell  Haskell  
BSD 3clause "New" or "Revised" License  MIT License 
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miso
 haskell todo list app (beginner)

jsaddle + firefox
Patching jsaddle by applying this commit made JSaddle usable in Firefox for me, but it has the downside that preventDefault/stopPropagation no longer work (see this issue for more info).
 Miso: A tasty Haskell frontend framework
 Resurrection/modernization of an old Haskell+Haste project (boardgame Yinsh)
 School of Haskell: Basics
 JavaScript Hydration Is a Workaround, Not a Solution
 Web development in Haskell

The Big List of Haskell GUI Libraries
Miso does support jsaddle, docs mention this under the "Live reload with jsaddle" section, although it could be more prominent.

A small benchmark for functional languages targeting web browsers
For those interested in DOMrelated benchmarks using GHCJS. Miso has some benchmarks here: https://krausest.github.io/jsframeworkbenchmark/current.html (Ctrl+F `miso`)

Options for a frontend of demo for a toy app
ghcjs is the way to go for you, and soon it might be asterius. i do not know how hard it is to set ghcjs up without a framework. but frameworks like obelisk (based on reflexdom), shpadoinkle, and miso automate that for. i personally like obelisk for its functional reactive programming but it can get awkward and get in your way. so if gui programming is just a means to the end of this one small application and you are not really interested in it nor functional reactive programming, shpadoinkle or miso might suit you better. miso implements the elm architecture (also "TEA", "functional model view controller") and shpadoinkle implements something directly equivalent to the elm architecture. but shpadoinkle achieves more composable widgets by minimalizing the elm architecture. so i recommend shpadoinkle for its better concept although miso is more mature.
Agda

Types versus sets (and what about categories?)
This was recently deemed inappropriate:
"Bye bye Set"
"Set and Prop are removed as keywords"
https://github.com/agda/agda/pull/4629

If given a list of properties/definitions and relationship between them, could a machine come up with (mostly senseless, but) true implications?
Still, there are many useful tools based on these ideas, used by programmers and mathematicians alike. What you describe sounds rather like Datalog (e.g. Soufflé Datalog), where you supply some rules and an initial fact, and the system repeatedly expands out the set of facts until nothing new can be derived. (This has to be finite, if you want to get anywhere.) In Prolog (e.g. SWI Prolog) you also supply a set of rules and facts, but instead of a fact as your starting point, you give a query containing some unknown variables, and the system tries to find an assignment of the variables that proves the query. And finally there is a rich array of theorem provers and proof assistants such as Agda, Coq, Lean, and Twelf, which can all be used to help check your reasoning or explore new ideas.

What can Category Theory do?
Haskell and Agda are probably the most obvious examples. Ocaml too, but it is much older, so its type system is not as categorical. There is also Idris, which is not as wellknown but is very cool.

What are the current hot topics in type theory and static analysis?
Most of the proof assistants out there: Lean, Coq, Dafny, Isabelle, F*, Idris 2, and Agda. And the main concepts are dependent types, Homotopy Type Theory AKA HoTT, and Category Theory. Warning: HoTT and Category Theory are really dense, you're going to really need to research them.

Amendmend proposal: Changed syntax for Or patterns
Does this come with plans to separately unify the body with each of the contexts induced by matching on each of the respective patterns (similar to what’s discussed here), or will it behave like the _ pattern and use only the most general context?

Functional Programming and Maths <> How can a code monkey learn Agda?
That's absolutely untrue. From the horse's mouth:
 Doom emacs and agdamode

FP language idea  would this is possible to infer and type check?
Agda has the socalled mixfix operators (which are powerful enough to cover pre/in/postfix cases with an arbitrary number of arguments), check that out:  https://agda.readthedocs.io/en/v2.6.1/language/mixfixoperators.html  https://github.com/agda/agda/blob/master/examples/Introduction/Operators.agda  https://github.com/agda/agdastdlib/blob/master/src/Data/Product/Base.agda

Best Programming Language for Computational Proof
Coq, Agda, Lean, Isabelle, and probably some others which are not coming to my mind at the moment, but those would be considered the major ones.

Do you use Idris or Coq, and why?
Funny that you say this, because there are some obvious long standing open feature requests with looking up the type of the term under cursor — № 4295 and № 516. I am not blaming anyone in particular — this is the way it is. I wish I could find time to rewrite the proof search engine (how hard can it be), but I am already buried under a pile of other commitments and a good chunk of overwhelming sadness.
What are some alternatives?
ihp  🔥 The fastest way to build type safe web apps. IHP is a new batteriesincluded web framework optimized for longterm productivity and programmer happiness
lean  Lean Theorem Prover
graphite  Haskell graphs and networks library
coq  Coq is a formal proof management system. It provides a formal language to write mathematical definitions, executable algorithms and theorems together with an environment for semiinteractive development of machinechecked proofs.
hevm  Dapp, Seth, Hevm, and more
opentyperep  Open type representations and dynamic types
helf  Haskell implementation of the Edinburgh Logical Framework
HoleyMonoid  Automatically exported from code.google.com/p/monoidcont
adjunctions  Simple adjunctions
lean4  Lean 4 programming language and theorem prover
containers  Assorted concrete container types
distributive  Dual Traversable