# Latest

**URL:** https://discourse.julialang.org/latest.md?page=69

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

**Page:** 70

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## [JSPlots.jl - Interactive HTML plots built from Julia](https://discourse.julialang.org/t/jsplots-jl-interactive-html-plots-built-from-julia/134785)

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**Author:** [@s-baumann](https://discourse.julialang.org/u/s-baumann)\
**Replies:** 0\
**Last updated:** [December 29, 2025, 5:51am UTC](https://discourse.julialang.org/t/jsplots-jl-interactive-html-plots-built-from-julia/134785 "2025-12-29T05:51:18Z")

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JSPlots.jl is a way to make HTML documents that host interactive plots; animations, etc. It can be used to generate reports and do investigations where you can show the contents to people who don’t have anything install…

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## [Large ODE Solver for Metal.jl](https://discourse.julialang.org/t/large-ode-solver-for-metal-jl/134769)

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**Author:** [@Gavin-Rockwood](https://discourse.julialang.org/u/Gavin-Rockwood)\
**Replies:** 11\
**Last updated:** [December 29, 2025, 2:49am UTC](https://discourse.julialang.org/t/large-ode-solver-for-metal-jl/134769 "2025-12-29T02:49:29Z")

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Is there any implementation for ODE solving using Metal.jl backends? I know there is DiffEqGPU, but the metal support is only for ensemble problems. I cannot for instance do f(u,p,t) = A\*u tspan = (0.0f0, 1.0f0) prob = …

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## [Constant tunable parameters in dynamic optimisation](https://discourse.julialang.org/t/constant-tunable-parameters-in-dynamic-optimisation/134774)

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**Author:** [@PhysicsBender](https://discourse.julialang.org/u/PhysicsBender)\
**Replies:** 1\
**Last updated:** [December 28, 2025, 9:26pm UTC](https://discourse.julialang.org/t/constant-tunable-parameters-in-dynamic-optimisation/134774 "2025-12-28T21:26:43Z")

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Hello , I was wondering what would be the best way to introduce a constant tunable parameter in a model that would be used in a dynamic optimisation scenario. I have a couple of working examples building on top the basic…

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## [Dodecahedral Calendar](https://discourse.julialang.org/t/dodecahedral-calendar/134775)

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**Author:** [@cormullion](https://discourse.julialang.org/u/cormullion)\
**Replies:** 1\
**Last updated:** [December 28, 2025, 4:11pm UTC](https://discourse.julialang.org/t/dodecahedral-calendar/134775 "2025-12-28T16:11:50Z")

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I re-discovered this little project today: A YouTube video: The idea is to print out two sheets, cut them out, and then get a dextrous individual (such as a child :)) to glue them together. GitHub …

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## [\[ANN\] Desmos.jl](https://discourse.julialang.org/t/ann-desmos-jl/134734)

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**Author:** [@hyrodium](https://discourse.julialang.org/u/hyrodium)\
**Replies:** 5\
**Last updated:** [December 28, 2025, 1:58am UTC](https://discourse.julialang.org/t/ann-desmos-jl/134734 "2025-12-28T01:58:26Z")

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I’m pleased to announce my new package Desmos.jl! I’m a big fan of both Julia and Desmos, and I created this package to bridge the gap between them. Desmos is a fantastic mathematical tool for drawing graphs in a web br…

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## [Learning more about Dual and Primal as used in Zygote.jl](https://discourse.julialang.org/t/learning-more-about-dual-and-primal-as-used-in-zygote-jl/134739)

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**Author:** [@firebat](https://discourse.julialang.org/u/firebat)\
**Replies:** 2\
**Last updated:** [December 27, 2025, 10:43am UTC](https://discourse.julialang.org/t/learning-more-about-dual-and-primal-as-used-in-zygote-jl/134739 "2025-12-27T10:43:05Z")

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Hi all, I’ve been interested in learning more about Zygote.jl and some ways I can use it in my optimization programs. Frankly, when terminology such as dual and primal are mentioned in the context of Zygotes mechanism, I…

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## [Modeling wind power output random process across multiple geographical locations](https://discourse.julialang.org/t/modeling-wind-power-output-random-process-across-multiple-geographical-locations/134529)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 13\
**Last updated:** [December 27, 2025, 9:44am UTC](https://discourse.julialang.org/t/modeling-wind-power-output-random-process-across-multiple-geographical-locations/134529 "2025-12-27T09:44:11Z")

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Hello, I want to model a vector stochastic process (may be decided according to historical observations). The length of the vector is N, which is the number of wind farms spreading in a power transmission network. The…

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## [REPLExt not found in 1.11.8](https://discourse.julialang.org/t/replext-not-found-in-1-11-8/134681)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 5\
**Last updated:** [December 26, 2025, 9:21pm UTC](https://discourse.julialang.org/t/replext-not-found-in-1-11-8/134681 "2025-12-26T21:21:40Z")

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Since I upgraded to 1.11.8 from 1.11.7, I am running into this error when entering the pkg\> mode: % julia +1.11.8 \_ \_ \_ \_(\_)\_ | Documentation: https://docs.julialang.org (\_) | (\_) (\_) …

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## [Has anyone heard of TOON format? Looking for Julia implementation](https://discourse.julialang.org/t/has-anyone-heard-of-toon-format-looking-for-julia-implementation/133908)

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**Author:** [@scelles](https://discourse.julialang.org/u/scelles)\
**Replies:** 12\
**Last updated:** [December 26, 2025, 3:01pm UTC](https://discourse.julialang.org/t/has-anyone-heard-of-toon-format-looking-for-julia-implementation/133908 "2025-12-26T15:01:05Z")

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Hi everyone, I recently came across TOON (Token-Oriented Object Notation), which is described as a data format designed to be more LLM-friendly than JSON. The format aims to reduce token usage while maintaining readabil…

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## [Free final time problem formulation using ModelingToolkit and InfiniteOpt](https://discourse.julialang.org/t/free-final-time-problem-formulation-using-modelingtoolkit-and-infiniteopt/134735)

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**Author:** [@PhysicsBender](https://discourse.julialang.org/u/PhysicsBender)\
**Replies:** 2\
**Last updated:** [December 26, 2025, 8:54am UTC](https://discourse.julialang.org/t/free-final-time-problem-formulation-using-modelingtoolkit-and-infiniteopt/134735 "2025-12-26T08:54:06Z")

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Hello all, I am a new Julia user coming from a Modelica background and I am trying to experiment with Modeling Toolkit and dynamic optimisation. I was trying to follow this example (\[Solving Dynamic Optimization Proble…

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## [Let it snow()](https://discourse.julialang.org/t/let-it-snow/72950)

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**Author:** [@ianshmean](https://discourse.julialang.org/u/ianshmean)\
**Replies:** 32\
**Last updated:** [December 26, 2025, 7:32am UTC](https://discourse.julialang.org/t/let-it-snow/72950 "2025-12-26T07:32:56Z")

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Let it snow() The code could definitely be golfed… function snow(io = stdout) h, w = displaysize(io) iob = IOBuffer() ioc = IOContext(IOContext(iob, io), :displaysize=\>(h,w)) print(io, repeat("\\n", h)…

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## [Autocompletion and function/method discoverability](https://discourse.julialang.org/t/autocompletion-and-function-method-discoverability/131263)

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**Author:** [@juliohm](https://discourse.julialang.org/u/juliohm)\
**Replies:** 15\
**Last updated:** [December 26, 2025, 4:10am UTC](https://discourse.julialang.org/t/autocompletion-and-function-method-discoverability/131263 "2025-12-26T04:10:40Z")

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Object-oriented languages make use of the obj.fun syntax for function calls. If the user types obj. and then presses TAB, he/she can immedietly learn about the available functions. The Julia story is more challenging, b…

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## [Using Combinatorics: permutations much slower than copied source code](https://discourse.julialang.org/t/using-combinatorics-permutations-much-slower-than-copied-source-code/134407)

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**Author:** [@depial](https://discourse.julialang.org/u/depial)\
**Replies:** 11\
**Last updated:** [December 26, 2025, 2:46am UTC](https://discourse.julialang.org/t/using-combinatorics-permutations-much-slower-than-copied-source-code/134407 "2025-12-26T02:46:06Z")

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When trying to solve an alphametics problem with permutations from Combinatorics.jl, I came across something I don’t understand about the performance. If I introduce permutations to the namespace via using Combinatorics…

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## [High memory usage when training a custom Lux model](https://discourse.julialang.org/t/high-memory-usage-when-training-a-custom-lux-model/134714)

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**Author:** [@HMegh](https://discourse.julialang.org/u/HMegh)\
**Replies:** 8\
**Last updated:** [December 26, 2025, 1:22am UTC](https://discourse.julialang.org/t/high-memory-usage-when-training-a-custom-lux-model/134714 "2025-12-26T01:22:11Z")

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I am trying to implement a custom Lux model, but I keep running out of memory even with small number (~500) of parameters. I have two kinds of layers (called sympnets) which take in and return two vectors. Each layer upd…

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## [Matt Godbolt's Advent of Compiler Optimisations 2025](https://discourse.julialang.org/t/matt-godbolts-advent-of-compiler-optimisations-2025/133926)

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**Author:** [@xiaoxi](https://discourse.julialang.org/u/xiaoxi)\
**Replies:** 3\
**Last updated:** [December 25, 2025, 2:45pm UTC](https://discourse.julialang.org/t/matt-godbolts-advent-of-compiler-optimisations-2025/133926 "2025-12-25T14:45:53Z")

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Matt Godbolt plans to publish a daily article and video, each detailing a fun and interesting optimization that the compiler can perform in C or C++, from December 1st to the 25th.

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## [Comprehensive intermediate-level Array tutorial](https://discourse.julialang.org/t/comprehensive-intermediate-level-array-tutorial/134683)

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**Author:** [@avilay](https://discourse.julialang.org/u/avilay)\
**Replies:** 11\
**Last updated:** [December 25, 2025, 3:20am UTC](https://discourse.julialang.org/t/comprehensive-intermediate-level-array-tutorial/134683 "2025-12-25T03:20:41Z")

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Can folks here recommend a tutorial on Arrays for somebody from a non-beginner programming background? I looked at a couple of tutorials on YouTube but they were teaching very basic stuff like simple creating and access…

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## [Sure in julia](https://discourse.julialang.org/t/sure-in-julia/134728)

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**Author:** [@Stephen](https://discourse.julialang.org/u/Stephen)\
**Replies:** 2\
**Last updated:** [December 25, 2025, 3:18am UTC](https://discourse.julialang.org/t/sure-in-julia/134728 "2025-12-25T03:18:51Z")

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Is there a posibility to transform this personal finance app into julia？ Oxygen, Genie?

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## [Error using Julia on an HPC cluster: Juliaup configuration is locked by another process, waiting for it to unlock](https://discourse.julialang.org/t/error-using-julia-on-an-hpc-cluster-juliaup-configuration-is-locked-by-another-process-waiting-for-it-to-unlock/118059)

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**Author:** [@squark](https://discourse.julialang.org/u/squark)\
**Replies:** 3\
**Last updated:** [December 25, 2025, 12:55am UTC](https://discourse.julialang.org/t/error-using-julia-on-an-hpc-cluster-juliaup-configuration-is-locked-by-another-process-waiting-for-it-to-unlock/118059 "2025-12-25T00:55:40Z")

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I have been using Julia on an HPC slurm cluster with no problem. However, I was trying to use the MPI.jl package to parallelize my code. The cluster has intel MPI that I have been trying to use without success. I added t…

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## [XLSX.jl ignores stop\_in\_empty\_row](https://discourse.julialang.org/t/xlsx-jl-ignores-stop-in-empty-row/134712)

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**Author:** [@Eben60](https://discourse.julialang.org/u/Eben60)\
**Replies:** 5\
**Last updated:** [December 24, 2025, 12:39pm UTC](https://discourse.julialang.org/t/xlsx-jl-ignores-stop-in-empty-row/134712 "2025-12-24T12:39:56Z")

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This is my file f3: an excel table, made with LibreOffice : id val1 val2 1 1.5 4.5 2 2.5 7.5 3 3.5 10.5 4 4.5 13.5 And that is what I get when I read it: julia\> DataFrame(XLSX.readtable(f3, "Sheet1"; header=…

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## [Static vectors of vectors slow?](https://discourse.julialang.org/t/static-vectors-of-vectors-slow/134720)

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**Author:** [@rokke](https://discourse.julialang.org/u/rokke)\
**Replies:** 3\
**Last updated:** [December 24, 2025, 12:11pm UTC](https://discourse.julialang.org/t/static-vectors-of-vectors-slow/134720 "2025-12-24T12:11:17Z")

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first, I introduce some very similar ways to represent some boring data, with reasonable benchmarks: julia\> a=SVector{3, MVector{3,Int}}(\[MVector{3,Int}(\[1,1,1\]),MVector{3,Int}(\[1,1,1\]),MVector{3,Int}(\[1,1,1\])\]) 3-eleme…

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## [OncePerTask case](https://discourse.julialang.org/t/oncepertask-case/134719)

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**Author:** [@yolhan\_mannes](https://discourse.julialang.org/u/yolhan_mannes)\
**Replies:** 1\
**Last updated:** [December 24, 2025, 11:10am UTC](https://discourse.julialang.org/t/oncepertask-case/134719 "2025-12-24T11:10:54Z")

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Hello, sorry I keep forgetting how to do this : function main() n = UInt128(10^7) input ::Vector{UInt128} = collect(0:n-1) result = OncePerTask() do Ref(UInt128(0)) end Threads.@threads for i in in…

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## [\[ANN\] Dynare.jl is now ready for testing](https://discourse.julialang.org/t/ann-dynare-jl-is-now-ready-for-testing/108177)

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**Author:** [@MichelJuillard](https://discourse.julialang.org/u/MichelJuillard)\
**Replies:** 14\
**Last updated:** [December 24, 2025, 9:37am UTC](https://discourse.julialang.org/t/ann-dynare-jl-is-now-ready-for-testing/108177 "2025-12-24T09:37:14Z")

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Dynare.jl (GitHub - DynareJulia/Dynare.jl: A Julia rewrite of Dynare: solving, simulating and estimating DSGE models.), a Julia rewriting of Dynare, is now ready for testing by users. Dynare is a software for solving, …

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## [Simpler Yin-Yang?](https://discourse.julialang.org/t/simpler-yin-yang/134696)

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**Author:** [@tp2750](https://discourse.julialang.org/u/tp2750)\
**Replies:** 6\
**Last updated:** [December 24, 2025, 7:48am UTC](https://discourse.julialang.org/t/simpler-yin-yang/134696 "2025-12-24T07:48:08Z")

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I wanted to draw the Yin-Yang symbol in Luxor.jl. Here’s what I came up with. Can this be done more idiomatic? I would have preferred the white “eye” of the black “fish” to be just a cut-out rather than over-plotting w…

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## [How to use perfect foresight in Dynare Julia](https://discourse.julialang.org/t/how-to-use-perfect-foresight-in-dynare-julia/134716)

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**Author:** [@McNelis-CMML](https://discourse.julialang.org/u/McNelis-CMML)\
**Replies:** 1\
**Last updated:** [December 24, 2025, 6:59am UTC](https://discourse.julialang.org/t/how-to-use-perfect-foresight-in-dynare-julia/134716 "2025-12-24T06:59:59Z")

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Using Dynare.jl for solving a perfect foresight. The model runs under stochastic simulations, so that the .mod file is correct. I am using Julia 1.12 and latest Dynare version. I post this code: Dynare.perfect\_foresig…

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## [2D stationary diffusion problem & (?) MethodOfLines](https://discourse.julialang.org/t/2d-stationary-diffusion-problem-methodoflines/118963)

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**Author:** [@Eben60](https://discourse.julialang.org/u/Eben60)\
**Replies:** 12\
**Last updated:** [December 24, 2025, 6:23am UTC](https://discourse.julialang.org/t/2d-stationary-diffusion-problem-methodoflines/118963 "2025-12-24T06:23:02Z")

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I’d like to model a mass exchanger which can be represented as diffusion in a fluid flow with given stationary flow field and given coordinate-dependent diffusion coefficient. 2D, rectangular domain, rectangular grid, st…

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## [Is it posible to serialize a Makie.Figure object?](https://discourse.julialang.org/t/is-it-posible-to-serialize-a-makie-figure-object/134686)

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**Author:** [@Eben60](https://discourse.julialang.org/u/Eben60)\
**Replies:** 2\
**Last updated:** [December 24, 2025, 4:33am UTC](https://discourse.julialang.org/t/is-it-posible-to-serialize-a-makie-figure-object/134686 "2025-12-24T04:33:04Z")

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I’ve tried with JLD2 and Serialization. InJLD2, the warnings were, it can’t save anonymous functions, while Serialization errored with “cannot serialize a running Task”. So probably no chance? This is the context.

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## [Developing MPI code using VSCode](https://discourse.julialang.org/t/developing-mpi-code-using-vscode/130108)

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**Author:** [@Salmon](https://discourse.julialang.org/u/Salmon)\
**Replies:** 5\
**Last updated:** [December 24, 2025, 1:13am UTC](https://discourse.julialang.org/t/developing-mpi-code-using-vscode/130108 "2025-12-24T01:13:02Z")

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Hi everyone, I want to parallelize some code on multiple nodes and am considering MPI.jl One thing that feels a bit suboptimal, is that MPI seems quite incompatible with the interactive workflow. Ideally, I would like …

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## [Understanding iterate() documentation is tough](https://discourse.julialang.org/t/understanding-iterate-documentation-is-tough/134715)

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**Author:** [@raman\_kumar](https://discourse.julialang.org/u/raman_kumar)\
**Replies:** 3\
**Last updated:** [December 24, 2025, 12:32am UTC](https://discourse.julialang.org/t/understanding-iterate-documentation-is-tough/134715 "2025-12-24T00:32:35Z")

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Understanding iterate() documentation is made tough although everyone use it easily. Is Julia for loop behind the scene a while loop? julia\> for i in 1:5 println(i) end is equivalent to :down\_arrow: …

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## [Stochastic filtration problem](https://discourse.julialang.org/t/stochastic-filtration-problem/134713)

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**Author:** [@ymuv1](https://discourse.julialang.org/u/ymuv1)\
**Replies:** 1\
**Last updated:** [December 23, 2025, 7:13pm UTC](https://discourse.julialang.org/t/stochastic-filtration-problem/134713 "2025-12-23T19:13:46Z")

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Hi all, I’m working with a physical system whose state u(t) follows an SDE du=f(u,t)dt+g(u,t)dW\_t The system produces a measured signal Y\_t given by dY\_t = h(u,t)dt+dW\_t where dW\_t is the same Wiener increment in bo…

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## [Confusion about periodic BCs in NearestNeighbors.jl](https://discourse.julialang.org/t/confusion-about-periodic-bcs-in-nearestneighbors-jl/134706)

<div class="topic-metadata">

**Author:** [@Barabule](https://discourse.julialang.org/u/Barabule)\
**Replies:** 2\
**Last updated:** [December 23, 2025, 5:00pm UTC](https://discourse.julialang.org/t/confusion-about-periodic-bcs-in-nearestneighbors-jl/134706 "2025-12-23T17:00:17Z")

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Hi, I’m trying to make a periodic tree in NearestNeigbors with a custom Distance metric struct SegmentDistance \<:Metric; end function parameters(::SegmentDistance) nothing end The idea is to compute line segment …

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