u/reximkutin r/haskell • Recommends
JSON Parser 100% From Scratch in Haskell (only 111 lines)
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#haskell#parsercombinators#monads
JSON Parser 100% From Scratch in Haskell (only 111 lines)
Tsoding
165K subscribers • 25 videos on Hallway
- Recommended by 4 people: 3 on Hacker News and 1 in engineering communities.
- Presented by Tsoding
- Linked in the descriptiontsoding/haskell-json
Intermediate. Assumes working knowledge.
205K views6 years ago4 recommendations
Programming languagesComputer scienceHaskellFunctional programmingCompilers and interpreters
Tsoding live-codes a JSON parser from scratch in Haskell using only the standard library and explaining parser combinators.
Twitch: twitch.tv/tsoding GitHub Repo: github.com/tsoding/haskell-json My Haskell Setup: youtube.com/watch?v=5p2Aq3bRuL0 Unusual video this time. This is a slightly edited recording of my Twitch stream. Initially I planned to make a regular video on this topic, but quickly realized that it's just way too much material for a single regular 10 minutes video. So I decided to make a Live Stream where I explain as much information as possible. And since the Stream turned out pretty well I'm publishing it here.Why it's here
4 people recommend thisWhat people say. Recommended as an excellent, intuitive walkthrough for learning Haskell, parser combinators, and functional programming concepts like monads.
lubesGordion Hacker News • Recommends
On “Basics of Haskell – Code and exercises”
Agreed! I've been trying to learn haskell for a long time, and this guy writes a json parser live, giving his intuition along the way. It's helped me immensely. link to this video
ducaaleon Hacker News • Recommends
On “List of YouTube channels for improving web development and programming skills”
I have recently discovered tsoding twitch channel( link ) which describes itself as Recreational programming. The topics range from webassembly and Game development to functional programming in haskell and ocaml. Some of the interesting random things I found there include: * a parser combinator in haskell( link to this video ) * stack based language compiler in ocaml( link ) You can find all the things that were done during the streams in link . You can also find his schedule at link
ObiWanFrijoleson Hacker News • Recommends
On “What Is IO Monad? (2018) [video]”
Nice to see Tsoding on the front page. He has another great video that covers a bunch of topics while making a JSON parser with only the Haskell standard library: link to this video
u/nosarthurin r/haskell • Mentions
Is there good introduction to the parsec library for newbies?
I try to follow the articles on this page, and most of them are obsolete ... It seems their API has changed, and there is little documentations.
https://hackage.haskell.org/package/parsec
For example, I don't understand what `Stream s m Char` is.
```
Prelude Text.Parsec> :t char
char :: Stream s m Char => Char -> ParsecT s u m Char
```
My understanding of parsec all comes from this video, but there is a gap from here to the parsec library APIs. Is there any document/articles on this? Or maybe this library is not really used often?
link to this video
u/imihnevichin r/functionalprogramming • Mentions
On “How can I learn functional programming?”
No offense but this sounds to me like "Help, I know FP perfectly, just don't know how to use it". The only way to learn how to use some programming style is to use it. Write command line tool, write tiny web server, use some libraries. Recursion, currying and even monads are not buzzwords, these are techniques that are used to solve some problems, you need to understand problems that they solve, and know their imperative brothers(like recursion and loops, and monad is more like a bridge between functional and imperative). I still highly recommend Haskell because it won't let you fallback to imperative style that easily. OCaml is also a good choice.
Also keep in mind that there's no distinct…
u/MichaelObviousin r/ProgrammingLanguages • Mentions
On “What are some great resources for building your own parser?”
I think this is a great resource to start with parser combinators
ducaaleon Hacker News • Mentions
On “Inventing Monads”
To understand monads, I think it helps to know a language where expressing such a concept is more natural. Although I do not claim to know 100% what monads are yet, coming across these features made it easier for me to understand the concept a little bit. - Algebraic data types - OCaml's let expressions - F#'s computation expressions I also think that it is important to write something that naturally requires the use of monads. One thing that spring to mind is Parser Combinators. - link - link to this video