# Latest

**URL:** https://discourse.julialang.org/latest.md?page=67

[Latest](https://discourse.julialang.org/latest.md) · [Categories](https://discourse.julialang.org/categories.md) · [Tags](https://discourse.julialang.org/tags.md)

**Page:** 68

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## [BSD on ARM](https://discourse.julialang.org/t/bsd-on-arm/134811)

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**Author:** [@phma](https://discourse.julialang.org/u/phma)\
**Replies:** 3\
**Last updated:** [January 6, 2026, 8:24pm UTC](https://discourse.julialang.org/t/bsd-on-arm/134811 "2026-01-06T20:24:21Z")

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I’ve been developing a system in Julia for someone, and we’re hoping to set up a network of actual devices within the next year. Some of these devices will have ARM processors. We may want to use BSD for licensing reason…

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## [ParallelStencil Question](https://discourse.julialang.org/t/parallelstencil-question/134915)

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**Author:** [@ziolai](https://discourse.julialang.org/u/ziolai)\
**Replies:** 2\
**Last updated:** [January 6, 2026, 7:48pm UTC](https://discourse.julialang.org/t/parallelstencil-question/134915 "2026-01-06T19:48:22Z")

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Does ParallelStencil.jl support staggered grid implementations?

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## [Method specificity/priority rules](https://discourse.julialang.org/t/method-specificity-priority-rules/132932)

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**Author:** [@raman\_kumar](https://discourse.julialang.org/u/raman_kumar)\
**Replies:** 13\
**Last updated:** [January 6, 2026, 6:38pm UTC](https://discourse.julialang.org/t/method-specificity-priority-rules/132932 "2026-01-06T18:38:53Z")

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Please explain methods priority or specificity in different cases. Where in Julia documentation is it explained? The following line and example in documentation are contradictory. The order in which the methods are def…

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## [How to use MTK as one block in a co-simulation](https://discourse.julialang.org/t/how-to-use-mtk-as-one-block-in-a-co-simulation/134895)

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**Author:** [@ohmsweetohm1](https://discourse.julialang.org/u/ohmsweetohm1)\
**Replies:** 8\
**Last updated:** [January 6, 2026, 1:33pm UTC](https://discourse.julialang.org/t/how-to-use-mtk-as-one-block-in-a-co-simulation/134895 "2026-01-06T13:33:04Z")

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How could I use this model using ModelingToolkit import ModelingToolkit: t\_nounits as t, D\_nounits as D @variables x(t)=0 u(t)=0 y(t) @parameters k = 1 eqs = \[D(x) ~ -k \* (x + u) y ~ x\] @named sys = System(eqs, …

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## [Energyplus with Julia](https://discourse.julialang.org/t/energyplus-with-julia/134637)

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**Author:** [@junsin0106](https://discourse.julialang.org/u/junsin0106)\
**Replies:** 7\
**Last updated:** [January 6, 2026, 11:57am UTC](https://discourse.julialang.org/t/energyplus-with-julia/134637 "2026-01-06T11:57:47Z")

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Hello, I understand that Dyad provides core capabilities such as a fluid library and built-in HVAC components (e.g., heat exchangers). From an HVAC control perspective, accurately capturing the dynamic behavior of the r…

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## [SunCalc returning times for wrong day](https://discourse.julialang.org/t/suncalc-returning-times-for-wrong-day/134733)

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**Author:** [@healyp](https://discourse.julialang.org/u/healyp)\
**Replies:** 3\
**Last updated:** [January 6, 2026, 8:46am UTC](https://discourse.julialang.org/t/suncalc-returning-times-for-wrong-day/134733 "2026-01-06T08:46:50Z")

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Is my use of SunCalc below correct? It’s reporting sunrise/sunset for the day before I specified. Is it a timezone issue? Many thanks. julia\> s=Date(2025,1,5) 2025-01-05 julia\> lat,lon = (52.9335, -9.3441) (52.9335,…

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## [Hessian of a vector-valued in-place function with ForwardDiff.jl](https://discourse.julialang.org/t/hessian-of-a-vector-valued-in-place-function-with-forwarddiff-jl/134904)

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**Author:** [@Yuricst](https://discourse.julialang.org/u/Yuricst)\
**Replies:** 2\
**Last updated:** [January 6, 2026, 8:13am UTC](https://discourse.julialang.org/t/hessian-of-a-vector-valued-in-place-function-with-forwarddiff-jl/134904 "2026-01-06T08:13:07Z")

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I am looking to compute the Hessian of a vector-valued in-place function that looks like function eom!(dx, x, p, t) dx\[1:3\] = x\[4:6\] dx\[4:6\] = -p\[1\] / norm(x\[1:3\])^3 \* x\[1:3\] end using ForwardDiff.jl but I am s…

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## [\[ANN\] Breakout.jl - A simple Breakout clone for fun and reinforcement learning on internal game state](https://discourse.julialang.org/t/ann-breakout-jl-a-simple-breakout-clone-for-fun-and-reinforcement-learning-on-internal-game-state/134872)

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**Author:** [@rajgoel](https://discourse.julialang.org/u/rajgoel)\
**Replies:** 3\
**Last updated:** [January 5, 2026, 11:40pm UTC](https://discourse.julialang.org/t/ann-breakout-jl-a-simple-breakout-clone-for-fun-and-reinforcement-learning-on-internal-game-state/134872 "2026-01-05T23:40:55Z")

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This package provides a Julia implementation of the Breakout game. My motivation for creating this package is to provide an easy to install library providing the Breakout game to get started with reinforcement learning (…

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## [NODE Training - Performance w/ Lux vs torchdiffeq](https://discourse.julialang.org/t/node-training-performance-w-lux-vs-torchdiffeq/134860)

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**Author:** [@csvance](https://discourse.julialang.org/u/csvance)\
**Replies:** 6\
**Last updated:** [January 5, 2026, 7:13pm UTC](https://discourse.julialang.org/t/node-training-performance-w-lux-vs-torchdiffeq/134860 "2026-01-05T19:13:34Z")

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So I’ve been training a neural ODE in Python using PyTorch and torchdiffeq. I was going to start with Julia and Lux but I ended up needing to train some upstream stuff (pretrained CNN backbones and custom PyTorch layers)…

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## [Arbitrary/High-precision optimisation of NLP](https://discourse.julialang.org/t/arbitrary-high-precision-optimisation-of-nlp/133973)

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**Author:** [@arnerob](https://discourse.julialang.org/u/arnerob)\
**Replies:** 13\
**Last updated:** [January 5, 2026, 4:59pm UTC](https://discourse.julialang.org/t/arbitrary-high-precision-optimisation-of-nlp/133973 "2026-01-05T16:59:15Z")

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I have solved a non-linear program with JuMP and IPopt. I want to refine the solution, but am limited by the Float64 precision. Therefore, I tried MadNLP and ExaModels, as they say that they support AbstarctFloat, see h…

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## [\[ANN\] OnlineStatsChains.jl - Chain OnlineStats computations in DAG pipelines ⚠️ Experimental](https://discourse.julialang.org/t/ann-onlinestatschains-jl-chain-onlinestats-computations-in-dag-pipelines-experimental/132849)

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**Author:** [@FemtoTrader](https://discourse.julialang.org/u/FemtoTrader)\
**Replies:** 1\
**Last updated:** [January 5, 2026, 4:58pm UTC](https://discourse.julialang.org/t/ann-onlinestatschains-jl-chain-onlinestats-computations-in-dag-pipelines-experimental/132849 "2026-01-05T16:58:39Z")

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Hi, I’m excited to announce OnlineStatsChains.jl, a package that enables you to chain OnlineStats computations in a Directed Acyclic Graph (DAG) structure with automatic value propagation. :warning: Important: This is …

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## [Applied scientist role in a quantitative investment firm](https://discourse.julialang.org/t/applied-scientist-role-in-a-quantitative-investment-firm/134892)

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**Author:** [@jeremiedb](https://discourse.julialang.org/u/jeremiedb)\
**Replies:** 0\
**Last updated:** [January 5, 2026, 4:49pm UTC](https://discourse.julialang.org/t/applied-scientist-role-in-a-quantitative-investment-firm/134892 "2026-01-05T16:49:22Z")

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Evovest is a quantitative investment firm in global equities based in Montreal, Canada. We primarily use Julia and are looking to expand our team with an Applied Research Scientist. Key responsabilities: Development …

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## [Incremental portfolio analytics (OnlinePortfolioAnalytics.jl)](https://discourse.julialang.org/t/incremental-portfolio-analytics-onlineportfolioanalytics-jl/113590)

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**Author:** [@FemtoTrader](https://discourse.julialang.org/u/FemtoTrader)\
**Replies:** 1\
**Last updated:** [January 5, 2026, 4:36pm UTC](https://discourse.julialang.org/t/incremental-portfolio-analytics-onlineportfolioanalytics-jl/113590 "2026-01-05T16:36:07Z")

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Hi, Sharing OnlinePortfolioAnalytics https://femtotrader.github.io/OnlinePortfolioAnalytics.jl/ This project aims to provide users with functionality for performing quantitative portfolio analytics via online algorithm…

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## [Creating efficient MOI wrapper for different cones and ordering them by types](https://discourse.julialang.org/t/creating-efficient-moi-wrapper-for-different-cones-and-ordering-them-by-types/130031)

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**Author:** [@yuwenchen95](https://discourse.julialang.org/u/yuwenchen95)\
**Replies:** 4\
**Last updated:** [January 5, 2026, 4:19pm UTC](https://discourse.julialang.org/t/creating-efficient-moi-wrapper-for-different-cones-and-ordering-them-by-types/130031 "2026-01-05T16:19:12Z")

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I’m considering to create a MOI wrapper for CuClarabel, where users can input different types of cones in arbitrary order while the MOI wrapper is able to order them in a predefined order and then pass it to CuClarabel. …

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## [Machine Learning and Deep Learning Course with Julia](https://discourse.julialang.org/t/machine-learning-and-deep-learning-course-with-julia/134890)

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**Author:** [@rajgoel](https://discourse.julialang.org/u/rajgoel)\
**Replies:** 1\
**Last updated:** [January 5, 2026, 4:13pm UTC](https://discourse.julialang.org/t/machine-learning-and-deep-learning-course-with-julia/134890 "2026-01-05T16:13:47Z")

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I created a course on Machine Learning and Deep Learning that is using Julia and Flux.jl in particular. I wanted the course to be mathematically precise while providing concise implementations that match the notation use…

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## [Multi-dimensional indices are incompatible with \`end\` index](https://discourse.julialang.org/t/multi-dimensional-indices-are-incompatible-with-end-index/134886)

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**Author:** [@aryavorskiy](https://discourse.julialang.org/u/aryavorskiy)\
**Replies:** 1\
**Last updated:** [January 5, 2026, 2:14pm UTC](https://discourse.julialang.org/t/multi-dimensional-indices-are-incompatible-with-end-index/134886 "2026-01-05T14:14:41Z")

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Julia allows to access the last index in the axis of an array using the end keyword by lowering it to lastindex in a rather predictable way: A = rand(5, 5, 2) A\[1:end - 1, end ÷ 2, :\] # lowers to A\[1:lastindex(A, 1) - 1…

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## [A script/tool to check actual capacity without errors (aliexpress drive)](https://discourse.julialang.org/t/a-script-tool-to-check-actual-capacity-without-errors-aliexpress-drive/134884)

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**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 2\
**Last updated:** [January 5, 2026, 10:35am UTC](https://discourse.julialang.org/t/a-script-tool-to-check-actual-capacity-without-errors-aliexpress-drive/134884 "2026-01-05T10:35:07Z")

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I have bought to my kid a “2TB” external drive on AliExpress, but I have now realized that it may just come with hacked firmware, so I am looking for a tool to check the actual capacity of a mounted path without errors. …

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## [Automating export of a currently running Pluto notebook to html](https://discourse.julialang.org/t/automating-export-of-a-currently-running-pluto-notebook-to-html/134357)

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**Author:** [@vvbond](https://discourse.julialang.org/u/vvbond)\
**Replies:** 1\
**Last updated:** [January 5, 2026, 10:31am UTC](https://discourse.julialang.org/t/automating-export-of-a-currently-running-pluto-notebook-to-html/134357 "2026-01-05T10:31:27Z")

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I’m interested in automatic generation of html snapshots of a Pluto notebook I’m currently interacting with. My use case is automatic generation of named html snapshot upon meeting a certain condition, e.g. successful d…

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## [\[ANN\] SymbolicIntegration.jl - indefinite integration with Symbolics.jl symbols](https://discourse.julialang.org/t/ann-symbolicintegration-jl-indefinite-integration-with-symbolics-jl-symbols/134777)

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**Author:** [@CiccioPasticcio](https://discourse.julialang.org/u/CiccioPasticcio)\
**Replies:** 28\
**Last updated:** [January 5, 2026, 10:12am UTC](https://discourse.julialang.org/t/ann-symbolicintegration-jl-indefinite-integration-with-symbolics-jl-symbols/134777 "2026-01-05T10:12:25Z")

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For a while now I have been developing SymbolicIntegration.jl, that lets you solve symbolic integrals in julia! it has for now two different methods to arrive at the antiderivative: Risch algorithm Rule based method us…

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## [Discourse Usage Tutorials](https://discourse.julialang.org/t/discourse-usage-tutorials/6552)

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**Author:** [@Daneel](https://discourse.julialang.org/u/Daneel)\
**Replies:** 6\
**Last updated:** [January 5, 2026, 8:17am UTC](https://discourse.julialang.org/t/discourse-usage-tutorials/6552 "2026-01-05T08:17:41Z")

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Discourse has some nice features which I hadn’t been aware of until I figured out how to do the quick interactive tutorials they have. There is a bot which takes you through them. See the response below to start them (h…

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## [GPU support for Turing modeling with system of ODEs](https://discourse.julialang.org/t/gpu-support-for-turing-modeling-with-system-of-odes/77410)

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**Author:** [@vembha](https://discourse.julialang.org/u/vembha)\
**Replies:** 8\
**Last updated:** [January 5, 2026, 7:38am UTC](https://discourse.julialang.org/t/gpu-support-for-turing-modeling-with-system-of-odes/77410 "2026-01-05T07:38:43Z")

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Hello, I am trying to perform Bayesian analysis on a Turing model with an ecological ODE system embedded; consider it to be a complex variant of a Lotka-Volterra model. As of now, the code is running perfectly fine with…

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## [A tight formulation of a specific kind of convex PWL curve](https://discourse.julialang.org/t/a-tight-formulation-of-a-specific-kind-of-convex-pwl-curve/134822)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 3\
**Last updated:** [January 5, 2026, 3:56am UTC](https://discourse.julialang.org/t/a-tight-formulation-of-a-specific-kind-of-convex-pwl-curve/134822 "2026-01-05T03:56:25Z")

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I’ve read some piecewise linear (PWL)-related stuff from JuMP’s doc. It appears that I haven’t seen the particular formulation below, which I think is worth mentioning. It’s from the generation cost curve of generators …

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## [Broadcast StepRange](https://discourse.julialang.org/t/broadcast-steprange/134867)

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**Author:** [@freeman](https://discourse.julialang.org/u/freeman)\
**Replies:** 3\
**Last updated:** [January 5, 2026, 12:23am UTC](https://discourse.julialang.org/t/broadcast-steprange/134867 "2026-01-05T00:23:01Z")

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Consider times\_dt = DateTime("2025-12-29T00:18:00"):Minute(1):DateTime("2025-12-29T22:21:00") typeof(times\_dt) # StepRange{DateTime, Minute} Consider broading on this. DateTime.(times\_dt) |\> typeof # Vector{DateTim…

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## [\`logsumexp\` using Accessors?](https://discourse.julialang.org/t/logsumexp-using-accessors/134835)

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**Author:** [@jar1](https://discourse.julialang.org/u/jar1)\
**Replies:** 6\
**Last updated:** [January 4, 2026, 1:46pm UTC](https://discourse.julialang.org/t/logsumexp-using-accessors/134835 "2026-01-04T13:46:42Z")

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Is it possible to do logsumexp in a cool way using Accessors? using Accessors julia\> @modify(log, 1:1.0:9 |\> sum(\_\[∗\])) ERROR: This should be unreachable. You probably need to overload \`Accessors.set(obj::Float64, ::typ…

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## [Julia in docker could not find packages in \`$JULIA\_LOAD\_PATH\`](https://discourse.julialang.org/t/julia-in-docker-could-not-find-packages-in-julia-load-path/134865)

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**Author:** [@Chrysoberyl](https://discourse.julialang.org/u/Chrysoberyl)\
**Replies:** 2\
**Last updated:** [January 4, 2026, 10:29am UTC](https://discourse.julialang.org/t/julia-in-docker-could-not-find-packages-in-julia-load-path/134865 "2026-01-04T10:29:24Z")

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I’m using Julia inside a docker container. I set $JULIA\_LOAD\_PATH to $load\_path:, where $load\_path contains $ ls $load\_path ... Compat ... NNlib ... $ cat $load\_path/Compat/Project.toml ... \[extensions\] CompatLinearAlg…

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## [DifferentiationInterface not generating correct shadow](https://discourse.julialang.org/t/differentiationinterface-not-generating-correct-shadow/131868)

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**Author:** [@alexl123](https://discourse.julialang.org/u/alexl123)\
**Replies:** 11\
**Last updated:** [January 4, 2026, 9:01am UTC](https://discourse.julialang.org/t/differentiationinterface-not-generating-correct-shadow/131868 "2026-01-04T09:01:42Z")

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Hello! I am trying to play with the Sophia optimization algorthim. I am storing my parameters as a ComponentArray since some parameters are scalar and others are vectors. When I use a first order method (Adam) I have no…

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## [How to add Colorbar to heatmap!](https://discourse.julialang.org/t/how-to-add-colorbar-to-heatmap/134736)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 2\
**Last updated:** [January 4, 2026, 8:33am UTC](https://discourse.julialang.org/t/how-to-add-colorbar-to-heatmap/134736 "2026-01-04T08:33:37Z")

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I fail to grasp Makie’s doc on how to add a Colorbar, if the user use heatmap! instead of heatmap. After reading the doc, I only know that this works data = reshape(1:25, 5, 5) fig, ax, hm = heatmap(data) Colorbar(fig\[…

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## [Parsing one or more networks in ConfParser](https://discourse.julialang.org/t/parsing-one-or-more-networks-in-confparser/134838)

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**Author:** [@phma](https://discourse.julialang.org/u/phma)\
**Replies:** 1\
**Last updated:** [January 4, 2026, 7:28am UTC](https://discourse.julialang.org/t/parsing-one-or-more-networks-in-confparser/134838 "2026-01-04T07:28:32Z")

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I’m writing a config file parser using ConfParser for a config file which includes, among other things, the latitude, longitude, and networks from which clients may connect. The file looks like this: Latitude 35.snip Lo…

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## [Adopt the SciML Style Guide for Julia Base and Standard Library?](https://discourse.julialang.org/t/adopt-the-sciml-style-guide-for-julia-base-and-standard-library/134845)

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**Author:** [@mkitti](https://discourse.julialang.org/u/mkitti)\
**Replies:** 10\
**Last updated:** [January 3, 2026, 11:51pm UTC](https://discourse.julialang.org/t/adopt-the-sciml-style-guide-for-julia-base-and-standard-library/134845 "2026-01-03T23:51:09Z")

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After thinking about docstrings from another post, I was wondering if the Julia Style Guide, particularly for Core, Base, and the standard libraries should be further specified, particularly for docstrings. Perhaps a …

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## [VSCode LS broken?](https://discourse.julialang.org/t/vscode-ls-broken/134851)

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**Author:** [@PetrKryslUCSD](https://discourse.julialang.org/u/PetrKryslUCSD)\
**Replies:** 12\
**Last updated:** [January 3, 2026, 8:40pm UTC](https://discourse.julialang.org/t/vscode-ls-broken/134851 "2026-01-03T20:40:06Z")

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Is the LS broken? After the recent round of updates I can’t seem to get anything out of the LS in VSCode. If I configure my own julia executable, it seems I have to do it in two places. Executable path and language-ser…

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