# Latest

**URL:** https://discourse.julialang.org/latest.md?page=121

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

**Page:** 122

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## [Gtk4.jl get selected values from GtkMultiSelection](https://discourse.julialang.org/t/gtk4-jl-get-selected-values-from-gtkmultiselection/131596)

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**Author:** [@jwright11](https://discourse.julialang.org/u/jwright11)\
**Replies:** 3\
**Last updated:** [August 17, 2025, 12:31am UTC](https://discourse.julialang.org/t/gtk4-jl-get-selected-values-from-gtkmultiselection/131596 "2025-08-17T00:31:15Z")

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Does anyone know how to get the user-selected values from a GtkMultiSelection in Gtk4.jl? I am trying the example code found here and shown below. I can’t seem to find any documentation on how to do it. using Gtk4 mod…

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## [\[ANN\] WaveFlow.jl: Audio engine in Julia](https://discourse.julialang.org/t/ann-waveflow-jl-audio-engine-in-julia/131490)

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**Author:** [@Gesee](https://discourse.julialang.org/u/Gesee)\
**Replies:** 5\
**Last updated:** [August 16, 2025, 5:10pm UTC](https://discourse.julialang.org/t/ann-waveflow-jl-audio-engine-in-julia/131490 "2025-08-16T17:10:04Z")

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Hello guys. I present my new package WaveFlow.jl, a complet audio engine. I’m not an audio engineer but I think it’s pretty good :sweat\_smile: Here are the available features: File loading: Waves can load a wide var…

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## [Empty contour3d plot of Mesh](https://discourse.julialang.org/t/empty-contour3d-plot-of-mesh/131604)

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**Author:** [@raman\_kumar](https://discourse.julialang.org/u/raman_kumar)\
**Replies:** 6\
**Last updated:** [August 16, 2025, 12:19pm UTC](https://discourse.julialang.org/t/empty-contour3d-plot-of-mesh/131604 "2025-08-16T12:19:57Z")

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I want to get 3d contour plot of V values but i got empty plot. Here r, θ and ϕ are in spherical coordinates. I convert them to Cartessian coordinates X,Y and Z. using GLMakie f= Figure(size = (1000, 800)) ax = Axis3(f\[…

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## [Using pmap within a package](https://discourse.julialang.org/t/using-pmap-within-a-package/131627)

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**Author:** [@veddox](https://discourse.julialang.org/u/veddox)\
**Replies:** 6\
**Last updated:** [August 16, 2025, 9:26am UTC](https://discourse.julialang.org/t/using-pmap-within-a-package/131627 "2025-08-16T09:26:40Z")

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I’ve been trying to wrap my head around how to use pmap() properly within a package, but I’m still a bit confused and am starting to suspect my original plan may not work. For context: I’m working on a process-based eco…

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## [Running Cplex.jl on HPC cluster](https://discourse.julialang.org/t/running-cplex-jl-on-hpc-cluster/131601)

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**Author:** [@Ely](https://discourse.julialang.org/u/Ely)\
**Replies:** 2\
**Last updated:** [August 16, 2025, 4:43am UTC](https://discourse.julialang.org/t/running-cplex-jl-on-hpc-cluster/131601 "2025-08-16T04:43:16Z")

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Hi everyone, Any idea please why my julia script on HPC can’t build or add the cplex package on the hpc cluster ? If i already have the Cplex path on the server, how can i properly export it in my sh (bash) file ? Th…

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## [Dividing a Dataframe](https://discourse.julialang.org/t/dividing-a-dataframe/131631)

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**Author:** [@SergeantMike67](https://discourse.julialang.org/u/SergeantMike67)\
**Replies:** 6\
**Last updated:** [August 15, 2025, 9:54pm UTC](https://discourse.julialang.org/t/dividing-a-dataframe/131631 "2025-08-15T21:54:54Z")

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I have a dataframe Row │ VarietyA VarietyB Variety.p.adj │ String String Float64 ─────┼─────────────────────────…

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## [Why has simple threading using \`threadid\` become so complex in v1.12...?](https://discourse.julialang.org/t/why-has-simple-threading-using-threadid-become-so-complex-in-v1-12/129135)

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**Author:** [@Datseris](https://discourse.julialang.org/u/Datseris)\
**Replies:** 39\
**Last updated:** [August 15, 2025, 9:50pm UTC](https://discourse.julialang.org/t/why-has-simple-threading-using-threadid-become-so-complex-in-v1-12/129135 "2025-08-15T21:50:30Z")

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Hi, several of my repos got raised an issue for the upcoming v1.12 and changes to multithreading, notifying of erroneous usage of threadid. E.g., Likely erroneous use of \`Threads.nthreads\` and \`Threads.threadid\` · Issue …

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## [Precompile package causing missing-from-cache errors](https://discourse.julialang.org/t/precompile-package-causing-missing-from-cache-errors/21747)

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**Author:** [@Egwene\_al\_Vere](https://discourse.julialang.org/u/Egwene_al_Vere)\
**Replies:** 0\
**Last updated:** [March 11, 2019, 5:52pm UTC](https://discourse.julialang.org/t/precompile-package-causing-missing-from-cache-errors/21747 "2019-03-11T17:52:13Z")

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As an example, (tested with an empty .julia folder), after precompile some package compile\_incremental(:Makie) and launch julia with the -J /path/to/precompiled/sysimg switch, loading other package can fail, e.g. usi…

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## [Questions about Symbolics: remove small constant terms](https://discourse.julialang.org/t/questions-about-symbolics-remove-small-constant-terms/131595)

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**Author:** [@agascoig](https://discourse.julialang.org/u/agascoig)\
**Replies:** 7\
**Last updated:** [August 15, 2025, 6:13pm UTC](https://discourse.julialang.org/t/questions-about-symbolics-remove-small-constant-terms/131595 "2025-08-15T18:13:49Z")

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I have the following symbolic expression with small terms in Julia: (2.23606797749979 - 2.220446049250313e-16im)\*(x\[1\] + x\[4\]) + (-2.23606797749979 + 2.220446049250313e-16im)\*x\[2\] + (-2.23606797749979 + 2.22044604925031…

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## [Julia for Research Software Engineering](https://discourse.julialang.org/t/julia-for-research-software-engineering/131528)

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**Author:** [@giordano](https://discourse.julialang.org/u/giordano)\
**Replies:** 1\
**Last updated:** [August 15, 2025, 4:01pm UTC](https://discourse.julialang.org/t/julia-for-research-software-engineering/131528 "2025-08-15T16:01:19Z")

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@vchuravy and I recorded a video about Julia for Research Software Engineering: You can also see the notebook showed throughout the video. This is part of a series of videos about programming languages fo…

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## [Handling errors in threads](https://discourse.julialang.org/t/handling-errors-in-threads/94321)

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**Author:** [@Ross\_Boylan](https://discourse.julialang.org/u/Ross_Boylan)\
**Replies:** 1\
**Last updated:** [August 15, 2025, 3:52pm UTC](https://discourse.julialang.org/t/handling-errors-in-threads/94321 "2025-08-15T15:52:27Z")

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My program keeps encountering errors in threads it has spawned; the only symptom I see is the main thread stalled trying to assign work. The tendency of threads and tasks to swallow errors silently is apparently long-st…

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## [Symbolics.jl and Latexify.jl: customize latex representations?](https://discourse.julialang.org/t/symbolics-jl-and-latexify-jl-customize-latex-representations/72180)

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**Author:** [@adomasbaliuka](https://discourse.julialang.org/u/adomasbaliuka)\
**Replies:** 4\
**Last updated:** [August 15, 2025, 3:00pm UTC](https://discourse.julialang.org/t/symbolics-jl-and-latexify-jl-customize-latex-representations/72180 "2025-08-15T15:00:52Z")

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(Julia 1.6) I deal with equations from publications and the variables there have lots of subscripts and superscripts. They cannot be represented as Julia variable names and I would prefer not to compromise. For example,…

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## [Optimizing multi-threading of tasks of varying duration](https://discourse.julialang.org/t/optimizing-multi-threading-of-tasks-of-varying-duration/131521)

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**Author:** [@oscarvdvelde](https://discourse.julialang.org/u/oscarvdvelde)\
**Replies:** 8\
**Last updated:** [August 15, 2025, 2:39pm UTC](https://discourse.julialang.org/t/optimizing-multi-threading-of-tasks-of-varying-duration/131521 "2025-08-15T14:39:54Z")

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I am processing batches of data by 10-minute time steps. Per step, my script calls an external binary (like 10 times as a sort of Monte Carlo variation) that produces data from raw files, and writes output, which is then…

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## [\[ANN\] StreamSampling.jl - Sampling methods for data streams](https://discourse.julialang.org/t/ann-streamsampling-jl-sampling-methods-for-data-streams/108779)

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**Author:** [@Tortar](https://discourse.julialang.org/u/Tortar)\
**Replies:** 9\
**Last updated:** [August 15, 2025, 1:26pm UTC](https://discourse.julialang.org/t/ann-streamsampling-jl-sampling-methods-for-data-streams/108779 "2025-08-15T13:26:20Z")

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Hi all! I’m happy to announce the new package IteratorSampling.jl, which can help to sample from arbitrary iterables in a single pass through the data. It is mainly based on the theory of reservoir sampling methods. Si…

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## [Fitting Distributions](https://discourse.julialang.org/t/fitting-distributions/131608)

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**Author:** [@Sergey\_Novak](https://discourse.julialang.org/u/Sergey_Novak)\
**Replies:** 8\
**Last updated:** [August 15, 2025, 11:19am UTC](https://discourse.julialang.org/t/fitting-distributions/131608 "2025-08-15T11:19:48Z")

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Hello everyone, I have a task to determine which distribution corresponds to the probability density function constructed from my data. To address this, I use the KS-test for distributions that I consider somewhat sim…

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## [Julia callback not invoked by C library. Works manually (in script) but not in function](https://discourse.julialang.org/t/julia-callback-not-invoked-by-c-library-works-manually-in-script-but-not-in-function/131561)

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**Author:** [@amit1](https://discourse.julialang.org/u/amit1)\
**Replies:** 9\
**Last updated:** [August 15, 2025, 9:41am UTC](https://discourse.julialang.org/t/julia-callback-not-invoked-by-c-library-works-manually-in-script-but-not-in-function/131561 "2025-08-15T09:41:50Z")

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I’m developing a Julia wrapper for KIM-API called kim\_api.jl and encountering a puzzling issue where my Julia callback function isn’t being invoked by the C library during computation. So KIM-API is supposed to register…

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## [I heard lux.jl is moving to reactant.jl. Where can I help?](https://discourse.julialang.org/t/i-heard-lux-jl-is-moving-to-reactant-jl-where-can-i-help/131625)

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**Author:** [@Tarny\_GG\_Channie](https://discourse.julialang.org/u/Tarny_GG_Channie)\
**Replies:** 4\
**Last updated:** [August 15, 2025, 8:43am UTC](https://discourse.julialang.org/t/i-heard-lux-jl-is-moving-to-reactant-jl-where-can-i-help/131625 "2025-08-15T08:43:05Z")

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I heard lux.jl is moving to reactant.jl. Personally, that’s a really good news. Not only would it probably be something actionable for me (like implementing machine learning layers), it could also help me get closer to r…

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## [I'm stuck with Julia and have nowhere to run to! (Maybe I discovered Julia for the wrong reason.)](https://discourse.julialang.org/t/im-stuck-with-julia-and-have-nowhere-to-run-to-maybe-i-discovered-julia-for-the-wrong-reason/131494)

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**Author:** [@Tarny\_GG\_Channie](https://discourse.julialang.org/u/Tarny_GG_Channie)\
**Replies:** 21\
**Last updated:** [August 15, 2025, 7:33am UTC](https://discourse.julialang.org/t/im-stuck-with-julia-and-have-nowhere-to-run-to-maybe-i-discovered-julia-for-the-wrong-reason/131494 "2025-08-15T07:33:36Z")

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Sorry for a long rant, but maybe I discovered Julia for all the wrong reasons. For short problem solving, solving problems with short (something like 100 LOCS), my self-assessment is that I am pretty much a genius. I’ve…

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## [No more threadid indexing? \[thread-local storage\]](https://discourse.julialang.org/t/no-more-threadid-indexing-thread-local-storage/131535)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 36\
**Last updated:** [August 15, 2025, 5:12am UTC](https://discourse.julialang.org/t/no-more-threadid-indexing-thread-local-storage/131535 "2025-08-15T05:12:13Z")

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I am implementing multi-threaded scientific software, an so far it works quite well. But now I am told that thread-local storage is no longer supported by Julia. Well, it still works, even under Julia 1.12rc1, but i am …

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## [Does Revise/CodeTracking work with PrecompileTools](https://discourse.julialang.org/t/does-revise-codetracking-work-with-precompiletools/131615)

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**Author:** [@co1emi11er](https://discourse.julialang.org/u/co1emi11er)\
**Replies:** 7\
**Last updated:** [August 15, 2025, 4:38am UTC](https://discourse.julialang.org/t/does-revise-codetracking-work-with-precompiletools/131615 "2025-08-15T04:38:35Z")

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I can’t seem to get things to precompile for my package when I try to use CodeTracking. @setup\_workload begin # Putting some things in \`@setup\_workload\` instead of \`@compile\_workload\` can reduce the size of the …

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## [Different results when using 1 and 1.0 in expression](https://discourse.julialang.org/t/different-results-when-using-1-and-1-0-in-expression/131617)

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**Author:** [@jogama](https://discourse.julialang.org/u/jogama)\
**Replies:** 7\
**Last updated:** [August 14, 2025, 9:38pm UTC](https://discourse.julialang.org/t/different-results-when-using-1-and-1-0-in-expression/131617 "2025-08-14T21:38:19Z")

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d = (1+0im, 1.0+0im) (sqrt(exp(-d\[1\]) - 1), sqrt(exp(-d\[2\]) - 1)) (0.0 + 0.7950600976206501im, 0.0 - 0.7950600976206501im) also d = (1+0im, 1.0+0im); (sqrt(exp(-d\[1\]) - 1.0), …

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## [Problems installing RSvg.jl on Windows](https://discourse.julialang.org/t/problems-installing-rsvg-jl-on-windows/131308)

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**Author:** [@cormullion](https://discourse.julialang.org/u/cormullion)\
**Replies:** 17\
**Last updated:** [August 14, 2025, 8:34pm UTC](https://discourse.julialang.org/t/problems-installing-rsvg-jl-on-windows/131308 "2025-08-14T20:34:15Z")

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Some people are having trouble installing Rsvg.jl on Windows (Luxor doesn't compile on julia v1.11.5 · Issue #332 · JuliaGraphics/Luxor.jl · GitHub). Can anyone with Windows (and a few spare minutes) install Rsvg.jl (or …

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## [How to divide a project into files and submodules?](https://discourse.julialang.org/t/how-to-divide-a-project-into-files-and-submodules/131593)

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**Author:** [@Snowy](https://discourse.julialang.org/u/Snowy)\
**Replies:** 5\
**Last updated:** [August 14, 2025, 5:42pm UTC](https://discourse.julialang.org/t/how-to-divide-a-project-into-files-and-submodules/131593 "2025-08-14T17:42:26Z")

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Thanks, this seems like probably a little more of an elegant solution. If working on a large project, is the best solution here to create a module with defined structs then include them in other appropriate modules?

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## [Load subfolder in src like in python](https://discourse.julialang.org/t/load-subfolder-in-src-like-in-python/131609)

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**Author:** [@Cyan](https://discourse.julialang.org/u/Cyan)\
**Replies:** 4\
**Last updated:** [August 14, 2025, 5:33pm UTC](https://discourse.julialang.org/t/load-subfolder-in-src-like-in-python/131609 "2025-08-14T17:33:42Z")

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Hi, all. I am wondering how I can load a folder as a submodule in Julia, similar to how it is done in Python. For example, I want to load the modules in SubModuleA in the form of MyPackage.SubModuleA.file\_a\_1 and MyPack…

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## [Books on software design with Julia](https://discourse.julialang.org/t/books-on-software-design-with-julia/131598)

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**Author:** [@Nikos\_Gianniotis](https://discourse.julialang.org/u/Nikos_Gianniotis)\
**Replies:** 3\
**Last updated:** [August 14, 2025, 1:15pm UTC](https://discourse.julialang.org/t/books-on-software-design-with-julia/131598 "2025-08-14T13:15:44Z")

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I have been using Julia for a long time, but my skills have long plateaued when it comes to designing my code in more modular / structured way. Ideally, I would like to improve my coding so that I could modularise my cod…

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## [Time-series in Julia (working list)](https://discourse.julialang.org/t/time-series-in-julia-working-list/62539)

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**Author:** [@Albert\_Zevelev](https://discourse.julialang.org/u/Albert_Zevelev)\
**Replies:** 41\
**Last updated:** [August 14, 2025, 12:14pm UTC](https://discourse.julialang.org/t/time-series-in-julia-working-list/62539 "2025-08-14T12:14:28Z")

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Here is a summary of time series in Julia. (Ported from this thread.) This is a Julia version of CRAN Task View: Time Series Analysis . TL;DR ARCHModels is the most developed volatility model pkg in Julia (it also…

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## [\[ANN\] New version for CameraCalibrations](https://discourse.julialang.org/t/ann-new-version-for-cameracalibrations/131603)

<div class="topic-metadata">

**Author:** [@yakir12](https://discourse.julialang.org/u/yakir12)\
**Replies:** 0\
**Last updated:** [August 14, 2025, 11:57am UTC](https://discourse.julialang.org/t/ann-new-version-for-cameracalibrations/131603 "2025-08-14T11:57:04Z")

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I’m happy to share that CameraCalibrations.jl, a Julia package for camera calibration, no longer relies on cv2 via PythonCall. Instead, it now directly uses OpenCV.jl for both checkerboard detection and camera model fitt…

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## [Find out which solver was used in automatic solver selection](https://discourse.julialang.org/t/find-out-which-solver-was-used-in-automatic-solver-selection/131564)

<div class="topic-metadata">

**Author:** [@diffeqslvr](https://discourse.julialang.org/u/diffeqslvr)\
**Replies:** 5\
**Last updated:** [August 14, 2025, 10:16am UTC](https://discourse.julialang.org/t/find-out-which-solver-was-used-in-automatic-solver-selection/131564 "2025-08-14T10:16:20Z")

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In julia, I am using an automatic solver selection to solve differential equations using the DifferentialEquations package. I would like to know which solver was used in the end, but when I run sol.alg, I get CompositeA…

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## [Strange GC issue on Julia 1.12-rc1](https://discourse.julialang.org/t/strange-gc-issue-on-julia-1-12-rc1/131529)

<div class="topic-metadata">

**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 9\
**Last updated:** [August 12, 2025, 9:07pm UTC](https://discourse.julialang.org/t/strange-gc-issue-on-julia-1-12-rc1/131529 "2025-08-12T21:07:17Z")

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I am happy that I can now use multi-threading on Julia 1.12rc1. I had to do some changes to my code, but now it works. But the garbage collector behaves differently. I am using two different settings. First settings: j…

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## [Package compiles only after "instantiate" but after a "resolve" that apparently doesn't change anything](https://discourse.julialang.org/t/package-compiles-only-after-instantiate-but-after-a-resolve-that-apparently-doesnt-change-anything/131582)

<div class="topic-metadata">

**Author:** [@sylvaticus](https://discourse.julialang.org/u/sylvaticus)\
**Replies:** 7\
**Last updated:** [August 14, 2025, 9:44am UTC](https://discourse.julialang.org/t/package-compiles-only-after-instantiate-but-after-a-resolve-that-apparently-doesnt-change-anything/131582 "2025-08-14T09:44:17Z")

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Ok, this happens often when I add a new dependency to a package I am developing. My issue is that the sequence I need to go is to make an istantiate, resolve, istantiate, but the message on resolve looks like this resol…

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