linear
ghc-proposals
linear | ghc-proposals | |
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8 | 160 | |
195 | 673 | |
- | 0.7% | |
5.4 | 9.2 | |
22 days ago | 7 days ago | |
Haskell | Python | |
BSD 3-clause "New" or "Revised" License | - |
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linear
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GHC.Num: Why no multiplication commutativity?
Linear.Quaternion.Quaterion from the linear package has a Num instance, and quaternion multiplication is noncommutative.
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Is there an existing typeclass for differences?
That's pretty much exactly the abstraction used in the 'linear' package's Affine class, in which we find points separated by vectors.
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What are the current challenges in Numerical Programming for Haskell?
Linear algebra: hmatrix again with its own array type (and linear but this is restricted to low dimensions)
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Advanced programming exercises/apps recommendations to code
This is very niche, but something I've wanted to do for a while is to generate some cool physics example on the surface of a sphere with https://hackage.haskell.org/package/hamilton, and display it with https://reanimate.github.io/ (using https://hackage.haskell.org/package/linear for the projection)
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How to create my Functor / Eq / Num combination on Coords?
Do check out the linear package. It has some complicated parts, but the types work out very nicely. Your Coords type is called V3 in that package, it has a huge list of instances for all kinds of different type classes.
- Advent of Code 2021 day 06
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Probabilistic modelling in Idris: engineering as research
I've come to love the linear approach, where instead of working with Naperian (Representable) functors, you work with Distributive functors.
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Monthly Hask Anything (June 2021)
See also the linear library, it contains types like data V3 a = V3 a a a with all of the useful instances.
ghc-proposals
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Functional Semantics in Imperative Clothing (Richard Feldman)
This is really just a matter of how much syntax sugar you want to implement. Idris has this already, and there’s a proposal to add it to Haskell too [0]. But none of this changes the core properties of the system which make it monadic.
[0] https://github.com/ghc-proposals/ghc-proposals/issues/527
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An alternative front end for Haskell?
> I think Haskell needs a way to graduate (or retire) language extensions
https://github.com/ghc-proposals/ghc-proposals/pull/601
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Or patterns proposal: Prefix signalling or just infix?
Additionally, while this proposal is focused on the simple implementation and so in the current proposal or patterns do not bind any variables as per #522, if we do get settled on syntax and then later wish to expand to allow binding variables as in #43, then the syntax is again clean and discoverable.
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Monthly Hask Anything (May 2023)
Yeah, a relatively natural thing would be to be able to opt-in to having the HasField instances be available in all contexts. The (not yet implemented, but accepted) "Modifiers" GHC proposal might be nice for that.
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Is there any way to build a simple additive prelude?
The local modules proposal imo is excellent as-is.
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Interview and AMA with Simon Peyton Jones
Why would you drop TypeFamilies? It seems fairly popular, given that it was just one vote short of getting added to GHC2021. Do you consider it a less-ideal compromise, that is subsumed by your second proposal (Core with GRTT)?
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Amendmend proposal: Changed syntax for Or patterns
as syntax is contentious a topic as ever, David (the main proposal author) and I would like to invite you to give your input on https://github.com/ghc-proposals/ghc-proposals/pull/585, where we propose to change the syntax of the accepted proposal #522 introducing Or patterns. In particular, we'd like to know
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MSc Dissertation: Comprehending Pure Functional Effect Systems
This looks great, congratulations on completing it! I assume you didn’t get an opportunity to evaluate the delimited continuations based eff library? It would’ve been nice to see Cont included as one of the effects covered, though perhaps not available in all the systems you looked at? Maybe some future work.
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Trouble understanding function import in Haskell
I do hope qualified exports are available someday: https://github.com/ghc-proposals/ghc-proposals/pull/283
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{-# WARNING #-} for Data.List.{head,tail} in future GHC 9.8
Right. Being able to disable "custom type warnings" at use sites was part of an earlier proposal (https://github.com/ghc-proposals/ghc-proposals/pull/454) but it ended up being shelved.
What are some alternatives?
nimber - Finite nimber arithmetic
haskell-language-server - Official haskell ide support via language server (LSP). Successor of ghcide & haskell-ide-engine.
nuha
ihp - 🔥 The fastest way to build type safe web apps. IHP is a new batteries-included web framework optimized for longterm productivity and programmer happiness
moving-averages
rio-orphans - A standard library for Haskell
effect-zoo - Comparing Haskell effect systems for ergonomics and speed
julia - The Julia Programming Language
reservoir - Reservoir Sampling Algorithms in Haskell
hoogle - Haskell API search engine
linear-accelerate - Instances to mix linear with accelerate
ghc - Mirror of the Glasgow Haskell Compiler. Please submit issues and patches to GHC's Gitlab instance (https://gitlab.haskell.org/ghc/ghc). First time contributors are encouraged to get started with the newcomers info (https://gitlab.haskell.org/ghc/ghc/wikis/contributing).