# Latest

**URL:** https://discourse.julialang.org/latest.md?page=85

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

**Page:** 86

---

## [With DataFrames, best practice for applying function across columns, where we also need to reference, in a second argument, the same column for each function call?](https://discourse.julialang.org/t/with-dataframes-best-practice-for-applying-function-across-columns-where-we-also-need-to-reference-in-a-second-argument-the-same-column-for-each-function-call/127747)

<div class="topic-metadata">

**Author:** [@midnightgreen](https://discourse.julialang.org/u/midnightgreen)\
**Replies:** 12\
**Last updated:** [November 11, 2025, 11:28pm UTC](https://discourse.julialang.org/t/with-dataframes-best-practice-for-applying-function-across-columns-where-we-also-need-to-reference-in-a-second-argument-the-same-column-for-each-function-call/127747 "2025-11-11T23:28:01Z")

</div>

This is somewhat difficult to put into words, however, I have two examples of this type of operation and I am unsure how best to tackle it in Julia. Take a weighted sum of a column within a grouping variable; repeat th…

---

## [\[ANN\] ZoneProfilers.jl: Another interface for the Tracy profiler](https://discourse.julialang.org/t/ann-zoneprofilers-jl-another-interface-for-the-tracy-profiler/133806)

<div class="topic-metadata">

**Author:** [@nhz2](https://discourse.julialang.org/u/nhz2)\
**Replies:** 0\
**Last updated:** [November 11, 2025, 11:22pm UTC](https://discourse.julialang.org/t/ann-zoneprofilers-jl-another-interface-for-the-tracy-profiler/133806 "2025-11-11T23:22:52Z")

</div>

I have been working on an interface for the tracy profiler to profile a multithreaded program I am working on. There are two closely related packages. ZoneProfilers.jl provides utilities to mark up code and a P…

---

## [Partial Least Squares](https://discourse.julialang.org/t/partial-least-squares/133742)

<div class="topic-metadata">

**Author:** [@eweiss](https://discourse.julialang.org/u/eweiss)\
**Replies:** 2\
**Last updated:** [November 11, 2025, 10:08pm UTC](https://discourse.julialang.org/t/partial-least-squares/133742 "2025-11-11T22:08:40Z")

</div>

I want to experiment with partial least squares regressions. My research points to lalvim’s PartialLeastSquaresRegressor as the only package with PLSR, but when I run Example 1, PLSRegressor() isn’t found. If there is …

---

## [How to pair together a Lines and a Band plot in Makie?](https://discourse.julialang.org/t/how-to-pair-together-a-lines-and-a-band-plot-in-makie/133800)

<div class="topic-metadata">

**Author:** [@Abhro](https://discourse.julialang.org/u/Abhro)\
**Replies:** 2\
**Last updated:** [November 11, 2025, 10:08pm UTC](https://discourse.julialang.org/t/how-to-pair-together-a-lines-and-a-band-plot-in-makie/133800 "2025-11-11T22:08:19Z")

</div>

I have two dataseries where each of them also has associated uncertainty. I’m plotting the uncertainty as a translucent envelope around the main line plot of the series. When using GLMakie/WGLMakie to interact with the …

---

## [Neovim + LanguageServer.jl crashing again](https://discourse.julialang.org/t/neovim-languageserver-jl-crashing-again/130273)

<div class="topic-metadata">

**Author:** [@DoktorMike](https://discourse.julialang.org/u/DoktorMike)\
**Replies:** 12\
**Last updated:** [November 11, 2025, 7:36pm UTC](https://discourse.julialang.org/t/neovim-languageserver-jl-crashing-again/130273 "2025-11-11T19:36:37Z")

</div>

This was discussed before but the issue I run into is new so I’m asking a new question. The language server started crashing with the message Client julials quit with exit code 1 and signal 0. Check log for errors: /hom…

---

## [DearDiary.jl: A lightweight but powerful machine learning experiment tracking tool for Julia](https://discourse.julialang.org/t/deardiary-jl-a-lightweight-but-powerful-machine-learning-experiment-tracking-tool-for-julia/133666)

<div class="topic-metadata">

**Author:** [@pebeto](https://discourse.julialang.org/u/pebeto)\
**Replies:** 8\
**Last updated:** [November 11, 2025, 6:37pm UTC](https://discourse.julialang.org/t/deardiary-jl-a-lightweight-but-powerful-machine-learning-experiment-tracking-tool-for-julia/133666 "2025-11-11T18:37:49Z")

</div>

After months of planning, and some weeks of development, the package is finally here and ready for use! As a solution for tracking machine learning experiments in Julia, DearDiary.jl aims to be lightweight, easy to use, …

---

## [MTK & units](https://discourse.julialang.org/t/mtk-units/133795)

<div class="topic-metadata">

**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 1\
**Last updated:** [November 11, 2025, 6:14pm UTC](https://discourse.julialang.org/t/mtk-units/133795 "2025-11-11T18:14:21Z")

</div>

In the past, I have more or less converted units manually, but have now started to use Unitful.jl – which also ties into Plots.jl and gives convenient typesetting of units along the axes. To me, there are at least 3 rea…

---

## [Simulate ModelingToolkit system with different parameters](https://discourse.julialang.org/t/simulate-modelingtoolkit-system-with-different-parameters/133791)

<div class="topic-metadata">

**Author:** [@JaviJR](https://discourse.julialang.org/u/JaviJR)\
**Replies:** 7\
**Last updated:** [November 11, 2025, 3:51pm UTC](https://discourse.julialang.org/t/simulate-modelingtoolkit-system-with-different-parameters/133791 "2025-11-11T15:51:08Z")

</div>

Hi all, In the past day, I have been reading the documentation on efficiently simulating ModelingToolkit models with different parameters. However, I find the documentation somewhat complex, especially for new users. In…

---

## [PlutoSliderServer on Github-pages website](https://discourse.julialang.org/t/plutosliderserver-on-github-pages-website/126880)

<div class="topic-metadata">

**Author:** [@Sarah\_Groves](https://discourse.julialang.org/u/Sarah_Groves)\
**Replies:** 3\
**Last updated:** [November 11, 2025, 1:55pm UTC](https://discourse.julialang.org/t/plutosliderserver-on-github-pages-website/126880 "2025-11-11T13:55:21Z")

</div>

I am trying to get the sliders working on my pluto notebook on my github-pages website (smgroves.github.io). I was looking at this: Is it possible to use PlutoSliderServer to host github pages with sliders that work? · J…

---

## [Slides/Presentations with Pluto.jl?](https://discourse.julialang.org/t/slides-presentations-with-pluto-jl/46516)

<div class="topic-metadata">

**Author:** [@mlanghinrichs](https://discourse.julialang.org/u/mlanghinrichs)\
**Replies:** 5\
**Last updated:** [November 11, 2025, 12:34pm UTC](https://discourse.julialang.org/t/slides-presentations-with-pluto-jl/46516 "2025-11-11T12:34:01Z")

</div>

Hi all, I just watched this great intro to Pluto.jl on YouTube and was wondering how they made the presentation. It looks like its an interactive presentation with slides made in Pluto, but I cannot figure out how they …

---

## [Coupling finite\`Union\` with \`T\` in \`NTuple{2, T} where {T}\`](https://discourse.julialang.org/t/coupling-finite-union-with-t-in-ntuple-2-t-where-t/133567)

<div class="topic-metadata">

**Author:** [@frankwswang](https://discourse.julialang.org/u/frankwswang)\
**Replies:** 7\
**Last updated:** [November 11, 2025, 10:48am UTC](https://discourse.julialang.org/t/coupling-finite-union-with-t-in-ntuple-2-t-where-t/133567 "2025-11-11T10:48:15Z")

</div>

We know that for UnionAll of Tuple that uses the same type parameter (e.g., T) for all the element types (in default) requires the element types to be the same concrete type: julia\> f1(a::Tuple{T, T}) where {T\<:Real} = …

---

## [The output of Gurobi's solution isn't qualified as its own input in terms of feasibility](https://discourse.julialang.org/t/the-output-of-gurobis-solution-isnt-qualified-as-its-own-input-in-terms-of-feasibility/133785)

<div class="topic-metadata">

**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 8\
**Last updated:** [November 11, 2025, 7:20am UTC](https://discourse.julialang.org/t/the-output-of-gurobis-solution-isnt-qualified-as-its-own-input-in-terms-of-feasibility/133785 "2025-11-11T07:20:52Z")

</div>

I write decomposition algorithms with the Gurobi solver, so occasionally I need to use Gurobi’s solution as data input to another model, which is also solved by Gurobi. But I find it annoying that the “$THE\_TITLE”. juli…

---

## [AD-Compatible Fluid Property Backend for Heat Pump Simulations](https://discourse.julialang.org/t/ad-compatible-fluid-property-backend-for-heat-pump-simulations/133658)

<div class="topic-metadata">

**Author:** [@junsin0106](https://discourse.julialang.org/u/junsin0106)\
**Replies:** 15\
**Last updated:** [November 11, 2025, 5:32am UTC](https://discourse.julialang.org/t/ad-compatible-fluid-property-backend-for-heat-pump-simulations/133658 "2025-11-11T05:32:52Z")

</div>

How can I wrap a media package that isn’t compatible with automatic differentiation? I need the Jacobians of density and temperature with respect to enthalpy and pressure for developing a transient heat pump simulation.…

---

## [Slowdown vs C++/Python for Eigen matrix multiplication via ccall](https://discourse.julialang.org/t/slowdown-vs-c-python-for-eigen-matrix-multiplication-via-ccall/133783)

<div class="topic-metadata">

**Author:** [@nrypkema](https://discourse.julialang.org/u/nrypkema)\
**Replies:** 2\
**Last updated:** [November 10, 2025, 11:54pm UTC](https://discourse.julialang.org/t/slowdown-vs-c-python-for-eigen-matrix-multiplication-via-ccall/133783 "2025-11-10T23:54:16Z")

</div>

I’m hoping someone can explain the performance degradation that I’m seeing with Eigen matrix multiplication (and other methods in the Eigen C++ library). I have a simple example here: The C++ file has a simple exampl…

---

## [Array addition of oneAPI.jl slower](https://discourse.julialang.org/t/array-addition-of-oneapi-jl-slower/133663)

<div class="topic-metadata">

**Author:** [@raman\_kumar](https://discourse.julialang.org/u/raman_kumar)\
**Replies:** 10\
**Last updated:** [November 10, 2025, 8:30pm UTC](https://discourse.julialang.org/t/array-addition-of-oneapi-jl-slower/133663 "2025-11-10T20:30:05Z")

</div>

Why oneAPI.jl array addition is slow? julia\> using BenchmarkTools, oneAPI julia\> c = rand(100,100); julia\> @btime $c.+1 4.950 μs (3 allocations: 78.21 KiB) julia\> a = oneArray(rand(100,100)); julia\> @btime $a.+1 4…

---

## [Topological sort (performance)](https://discourse.julialang.org/t/topological-sort-performance/17153)

<div class="topic-metadata">

**Author:** [@govorunov](https://discourse.julialang.org/u/govorunov)\
**Replies:** 43\
**Last updated:** [November 10, 2025, 5:36pm UTC](https://discourse.julialang.org/t/topological-sort-performance/17153 "2025-11-10T17:36:27Z")

</div>

Hi. I needed to implement a topological sort, so I found some implementations on the Internet here: Topological sort - Rosetta Code I initially needed it in Python and experimented with Julia just out of curiosity. Her…

---

## [Poincare section for Henon Helies system](https://discourse.julialang.org/t/poincare-section-for-henon-helies-system/124059)

<div class="topic-metadata">

**Author:** [@nn-heckfy](https://discourse.julialang.org/u/nn-heckfy)\
**Replies:** 9\
**Last updated:** [November 10, 2025, 3:12pm UTC](https://discourse.julialang.org/t/poincare-section-for-henon-helies-system/124059 "2025-11-10T15:12:48Z")

</div>

Greetings. I’m trying to solve a problem of plotting a Poincare map for the Henon Heiles’s system. But the figure is completely painted over, but should have cavities. Maybe I’m using the Julia commands incorrectly someh…

---

## [What is the most fitting container in foreach](https://discourse.julialang.org/t/what-is-the-most-fitting-container-in-foreach/133775)

<div class="topic-metadata">

**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 6\
**Last updated:** [November 10, 2025, 2:02pm UTC](https://discourse.julialang.org/t/what-is-the-most-fitting-container-in-foreach/133775 "2025-11-10T14:02:29Z")

</div>

It’s a small question but I have an impulse to ask: I find that the generator is lazy julia\> const a = fill(0, 4); julia\> function f!(i) i == 3 && error() a\[i\] = i -i end; juli…

---

## [\[Help Wanted\] Help contribute test cases to improve LLM performance on Julia code](https://discourse.julialang.org/t/help-wanted-help-contribute-test-cases-to-improve-llm-performance-on-julia-code/132991)

<div class="topic-metadata">

**Author:** [@Keno](https://discourse.julialang.org/u/Keno)\
**Replies:** 6\
**Last updated:** [November 10, 2025, 1:56pm UTC](https://discourse.julialang.org/t/help-wanted-help-contribute-test-cases-to-improve-llm-performance-on-julia-code/132991 "2025-11-10T13:56:09Z")

</div>

Hi all, For the past few weeks, I’ve been working on creating a set of benchmark test cases that will be used to evaluate and train LLMs to improve their performance on Julia code. I’m particularly interested in test ca…

---

## [\[ANN\] Small VS Code extension to help creating docstrings](https://discourse.julialang.org/t/ann-small-vs-code-extension-to-help-creating-docstrings/133765)

<div class="topic-metadata">

**Author:** [@Ronis\_BR](https://discourse.julialang.org/u/Ronis_BR)\
**Replies:** 9\
**Last updated:** [November 10, 2025, 1:46pm UTC](https://discourse.julialang.org/t/ann-small-vs-code-extension-to-help-creating-docstrings/133765 "2025-11-10T13:46:05Z")

</div>

Hi! I am moving from Neovim to VS Code for my development workflow. In Neovim, I had a lua function to extract information from the function declaration and help me creating docstrings. Hence, I released a small extensi…

---

## [Extremly slow matrix multiplication with Hermitian(sparse())](https://discourse.julialang.org/t/extremly-slow-matrix-multiplication-with-hermitian-sparse/133774)

<div class="topic-metadata">

**Author:** [@tripo](https://discourse.julialang.org/u/tripo)\
**Replies:** 3\
**Last updated:** [November 10, 2025, 12:46pm UTC](https://discourse.julialang.org/t/extremly-slow-matrix-multiplication-with-hermitian-sparse/133774 "2025-11-10T12:46:40Z")

</div>

Hello everyone, I have a large sparse hermitian matrix in my code but the matrix multiplication is taking absolutely forever. Is it a bug ? M = rand(2000,2000); C = rand(2000,2000); @time M\*C; @time M\*Hermitian(C); @…

---

## [Mixed integer problem](https://discourse.julialang.org/t/mixed-integer-problem/133624)

<div class="topic-metadata">

**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 17\
**Last updated:** [November 10, 2025, 10:37am UTC](https://discourse.julialang.org/t/mixed-integer-problem/133624 "2025-11-10T10:37:47Z")

</div>

I attempt to define a mixed-integer optimization problem. To simplify the problem: I have 10 wind turbines. I have 10 boolean variables that indicate whether the turbine is operating at full or partial power. If it is o…

---

## [Using dates as x axis in Makie.jl](https://discourse.julialang.org/t/using-dates-as-x-axis-in-makie-jl/133762)

<div class="topic-metadata">

**Author:** [@elwwan](https://discourse.julialang.org/u/elwwan)\
**Replies:** 3\
**Last updated:** [November 10, 2025, 9:40am UTC](https://discourse.julialang.org/t/using-dates-as-x-axis-in-makie-jl/133762 "2025-11-10T09:40:06Z")

</div>

Hello everyone, I am trying to plot brackets in Makie.jl while using dates as the x axis. Unfortunately it gives me an error since I can’t use Date() as an argument in bracket!(). Here is the code that causes the error…

---

## [GPU memory issue on AMDGPU](https://discourse.julialang.org/t/gpu-memory-issue-on-amdgpu/133560)

<div class="topic-metadata">

**Author:** [@Alexander-Barth](https://discourse.julialang.org/u/Alexander-Barth)\
**Replies:** 4\
**Last updated:** [November 10, 2025, 7:51am UTC](https://discourse.julialang.org/t/gpu-memory-issue-on-amdgpu/133560 "2025-11-10T07:51:57Z")

</div>

I am trying to train a neural network and make inference using this neural network with Lux (1.22.1) AMDGPU (2.1.1) and julia (1.12.0). The AMDGPU version kernel driver is 6.3.6 (as reported by /sys/module/amdgpu/versio…

---

## [Banded Jacobian of the constraints](https://discourse.julialang.org/t/banded-jacobian-of-the-constraints/133766)

<div class="topic-metadata">

**Author:** [@Ceserik](https://discourse.julialang.org/u/Ceserik)\
**Replies:** 4\
**Last updated:** [November 10, 2025, 6:22am UTC](https://discourse.julialang.org/t/banded-jacobian-of-the-constraints/133766 "2025-11-10T06:22:04Z")

</div>

Hello, I am using JuMP for solving optimal control of a car on a track. I am trying to reformulate my problem, to improve the sparsity pattern of jacobian of constraints and Hessian of Lagrangian. I have managed to get …

---

## [Help refining an MINLP and selecting an optimiser to make solving faster / possible](https://discourse.julialang.org/t/help-refining-an-minlp-and-selecting-an-optimiser-to-make-solving-faster-possible/133758)

<div class="topic-metadata">

**Author:** [@HarrisonWilde](https://discourse.julialang.org/u/HarrisonWilde)\
**Replies:** 4\
**Last updated:** [November 10, 2025, 12:00am UTC](https://discourse.julialang.org/t/help-refining-an-minlp-and-selecting-an-optimiser-to-make-solving-faster-possible/133758 "2025-11-10T00:00:06Z")

</div>

I am building a problem that involves making choices on which of two levers (or both) to intervene on products in a portfolio to alter their characteristics in order to attain a target average “score” value derived from …

---

## [How to call ssyevd](https://discourse.julialang.org/t/how-to-call-ssyevd/133496)

<div class="topic-metadata">

**Author:** [@billmclean](https://discourse.julialang.org/u/billmclean)\
**Replies:** 2\
**Last updated:** [November 9, 2025, 10:21pm UTC](https://discourse.julialang.org/t/how-to-call-ssyevd/133496 "2025-11-09T22:21:54Z")

</div>

I am trying to figure out how to call rocsolver\_ssyevd to compute the eigenvalues of a symmetric matrix. If I run the code using AMDGPU import AMDGPU.rocBLAS: rocblas\_int, handle import AMDGPU.rocSOLVER: rocsolver\_ssye…

---

## [Sysimage -\> Invalid signature in function definition](https://discourse.julialang.org/t/sysimage-invalid-signature-in-function-definition/133757)

<div class="topic-metadata">

**Author:** [@kousu](https://discourse.julialang.org/u/kousu)\
**Replies:** 2\
**Last updated:** [November 9, 2025, 9:15pm UTC](https://discourse.julialang.org/t/sysimage-invalid-signature-in-function-definition/133757 "2025-11-09T21:15:55Z")

</div>

Why does running against a custom sysimage change the behaviour of my program? I thought, at most, it would accelerate the wrong things. ▶ jlfmt.jl ▶ beer.jl Under normal Julia, this is fine: $ time julia jlfmt.jl beer.jl …

---

## [Can we get RealtimeSanitizer in Julia?](https://discourse.julialang.org/t/can-we-get-realtimesanitizer-in-julia/119330)

<div class="topic-metadata">

**Author:** [@GeorgeGkountouras](https://discourse.julialang.org/u/GeorgeGkountouras)\
**Replies:** 9\
**Last updated:** [November 9, 2025, 8:10pm UTC](https://discourse.julialang.org/t/can-we-get-realtimesanitizer-in-julia/119330 "2025-11-09T20:10:04Z")

</div>

Introduction At last year’s Audio Developer Conference, RealtimeSanitizer, a tool for detecting function calls that are unsafe in a realtime context, was presented. RTSan is now being upstreamed to LLVM 20 and will be pr…

---

## [Julia Base module make workflow](https://discourse.julialang.org/t/julia-base-module-make-workflow/133763)

<div class="topic-metadata">

**Author:** [@JimCircadian](https://discourse.julialang.org/u/JimCircadian)\
**Replies:** 4\
**Last updated:** [November 9, 2025, 6:30pm UTC](https://discourse.julialang.org/t/julia-base-module-make-workflow/133763 "2025-11-09T18:30:11Z")

</div>

Hello I’m probably missing something extremely obvious, but is there a speedier way of hacking on the contents of base/ in the source tree? Each time I change something, running make again seems to rebuild the sysimage …

[Previous page](https://discourse.julialang.org/latest.md?page=84)

[Next page](https://discourse.julialang.org/latest.md?page=86)