hython
lens
hython | lens | |
---|---|---|
2 | 4 | |
572 | 1,986 | |
- | - | |
10.0 | 7.0 | |
almost 7 years ago | 9 days ago | |
Haskell | Haskell | |
GNU General Public License v3.0 only | BSD 2-clause "Simplified" License |
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hython
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Leaving Haskell Behind
This really resonates with me.
I’ve been using it in a decidedly industrial application for about 1.5 years now. I had some fairly significant experience with it prior (https://github.com/mattgreen/hython).
For the first time in a long time (20 years experience) I’ve needed to learn a significant amount of things. It’s a combo of the domain and the language. It’s rather exhilarating, and also exhausting. Could also be a lot to bite off on with a busy home life too.
Regardless, the language is brilliant. My manager exhorts me to generally write in a top-down manner a lot because Haskell’s flexibility really conveys dev intent well, so think hard about how it should read, and start from there. This is a huge mindset shift from most langs, where you can feel your brain shut off to save cycles as you type “function” over and over. It really feels like it is meant to be write-friendly. Point-free functions are wonderfully terse to write. I joke that TH is my favorite language: a type-checked macro language that lets me write almost anything I want.
And there’s the rub: even with controlled effects via monads, the syntax is still hard for me to scan and read. I don’t know if this comes eventually or what, but this feels like a function of how dense a line could be. I miss early return dearly, and understand why it isn’t a thing (except if you have a MonadZero at hand) but I know it’s a syntactic transformation that won’t make it in. I really miss the amazing Rust LSP. Haskell’s recently lost the ability to flesh out pattern matches due to Haskell internals shifting with 9.x. I still hate and screw up stacking monads. Compile times can be brutal, esp if you hit the lens library.
I really think the community is one of the strongest group of programmers I’ve already seen. I don’t want to belabor this and dwell on the big brain memes, it’s more that they think hard on this stuff and actually push forward, vs just telling each other that web frameworks are rocket science and it’s impossible to do better than what it exists.
Ultimately, Haskell fits like a glove for our domain of program analysis. Beyond that, I’d still be a bit wary. I’m still thirsty for a PL that is essentially OCaml but with a better syntax. But that’s just me.
- Dhall: A Gateway Drug to Haskell
lens
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Haskell Lens Tutorial by Exercises
They are in fact well structured and not random at all. Take a look at this:
https://github.com/ekmett/lens/wiki/Operators
- -- /It puts the state in the monad or it gets the hose again./
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How to learn OOP?
A composition of functional operations over Kmett style lenses. Here's the original Haskell implementation, here's usage in JS via Ramda
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Dhall: A Gateway Drug to Haskell
The documentation of lenses is geared towards people know what lenses are. Of course this single fragment of documentation doesn't make sense if you don't know what lenses are. If you want to understand what lenses are the package links to a helpful wiki and tutorial: https://github.com/ekmett/lens/wiki/Overview
All within reach within seconds of discovering the function.
What are some alternatives?
proxy - proxy 'helpers'
proxy - This repository contains the WhatsApp proxy implementation for users to host their own proxy infrastructure to connect to WhatsApp for chat (VoIP is not currently supported)
algebraic-classes - Conversions between algebraic classes and F-algebras.
RFC1751 - RFC-1751 library for Haskell
hexml-lens - Lenses for working with XML data
double-metaphone
Frames - Data frames for tabular data.
minst-idx - Read and write data in the IDX format used in e.g. the MNIST database
data-fix - Fixpoint data types
lens-simple - simplified import of lens-family
vcd - A small library for generating VCD files.
lens-regex - Lens powered regular expression