# Latest

**URL:** https://discourse.julialang.org/latest.md?page=135

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

**Page:** 136

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## [Cruise v0.1.0: A Julia Game Engine](https://discourse.julialang.org/t/cruise-v0-1-0-a-julia-game-engine/130708)

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**Author:** [@Gesee](https://discourse.julialang.org/u/Gesee)\
**Replies:** 5\
**Last updated:** [July 15, 2025, 4:18pm UTC](https://discourse.julialang.org/t/cruise-v0-1-0-a-julia-game-engine/130708 "2025-07-15T16:18:03Z")

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Hello guys… It’s been more than a year that I have been working on this and after the last version of ReactiveECS, I think I finally have every necessary piece for this to work. Outdoors.jl: An API-agnostic windows an…

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## [Libgobject has undefined symbol g\_dir\_unref that makes Plots installation fail](https://discourse.julialang.org/t/libgobject-has-undefined-symbol-g-dir-unref-that-makes-plots-installation-fail/130755)

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**Author:** [@psammetichus](https://discourse.julialang.org/u/psammetichus)\
**Replies:** 4\
**Last updated:** [July 15, 2025, 9:48pm UTC](https://discourse.julialang.org/t/libgobject-has-undefined-symbol-g-dir-unref-that-makes-plots-installation-fail/130755 "2025-07-15T21:48:20Z")

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I am working on a university cluster (dev node is a 96 core AMD Epyc) with Julia 1.11.3 running Ubuntu 22.04. When starting from a fresh install, adding Plots consistently leads to errors in precompiling Cairo\_jll, Qt6B…

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## [JuliaCon Global 2025: Community Prize](https://discourse.julialang.org/t/juliacon-global-2025-community-prize/130759)

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**Author:** [@ranjan](https://discourse.julialang.org/u/ranjan)\
**Replies:** 0\
**Last updated:** [July 15, 2025, 9:37pm UTC](https://discourse.julialang.org/t/juliacon-global-2025-community-prize/130759 "2025-07-15T21:37:24Z")

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Hello, Please nominate a member of the community for the 2025 Julia Community Prize: The winner will be announced at JuliaCon Global 2025. Thank you, The JuliaCon 2025 Organizing Committee

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## [String line continuation](https://discourse.julialang.org/t/string-line-continuation/130757)

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**Author:** [@rokke](https://discourse.julialang.org/u/rokke)\
**Replies:** 14\
**Last updated:** [July 15, 2025, 9:01pm UTC](https://discourse.julialang.org/t/string-line-continuation/130757 "2025-07-15T21:01:05Z")

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the docs make it sound like you can continue strings: “long lines can be broken up” but it’s giving me an error in the repl: julia\> "This is a long \\ ERROR: ParseError: # Error @ REPL\[1\]:1:17 "This is a long \\ # …

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## [Plots library throwing error](https://discourse.julialang.org/t/plots-library-throwing-error/130756)

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**Author:** [@Tanya123](https://discourse.julialang.org/u/Tanya123)\
**Replies:** 1\
**Last updated:** [July 15, 2025, 8:42pm UTC](https://discourse.julialang.org/t/plots-library-throwing-error/130756 "2025-07-15T20:42:14Z")

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I am currently working on implementing a particle filter for my 2D model using the BootstrapFilter() function from the ParticleFilter.jl package. As a preliminary step, I was testing the setup on a linear advection model…

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## [Can Makie plot axis in "zebra style"?](https://discourse.julialang.org/t/can-makie-plot-axis-in-zebra-style/130745)

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**Author:** [@Ronis\_BR](https://discourse.julialang.org/u/Ronis_BR)\
**Replies:** 12\
**Last updated:** [July 15, 2025, 7:22pm UTC](https://discourse.julialang.org/t/can-makie-plot-axis-in-zebra-style/130745 "2025-07-15T19:22:32Z")

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Hi! A design pattern very common when plotting maps is to use “zebra style” in the axes like this: Is it possible to create this type of axes in Makie?

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## [Why is my parallelized running time is twice of the single run](https://discourse.julialang.org/t/why-is-my-parallelized-running-time-is-twice-of-the-single-run/130685)

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**Author:** [@Xu\_Shan](https://discourse.julialang.org/u/Xu_Shan)\
**Replies:** 8\
**Last updated:** [July 15, 2025, 6:52pm UTC](https://discourse.julialang.org/t/why-is-my-parallelized-running-time-is-twice-of-the-single-run/130685 "2025-07-15T18:52:25Z")

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Hi Guys, I am running following codes to parallelize my model running for 47 independent sites. In total the parallelization code runs for 120 seconds, but single run only costs 60 seconds…I am wondering why does the pa…

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## [Plea for segfault assistance in PythonCall.jl](https://discourse.julialang.org/t/plea-for-segfault-assistance-in-pythoncall-jl/130697)

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**Author:** [@MilesCranmer](https://discourse.julialang.org/u/MilesCranmer)\
**Replies:** 38\
**Last updated:** [July 15, 2025, 6:46pm UTC](https://discourse.julialang.org/t/plea-for-segfault-assistance-in-pythoncall-jl/130697 "2025-07-15T18:46:32Z")

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Hi all, I was wondering if someone could help us track down a segfault in Julia/PythonCall? It has been hitting us for the past half year in GitHub actions, and has now started to hurt our library’s user base. It has be…

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## [Plots, heatmap and xlim](https://discourse.julialang.org/t/plots-heatmap-and-xlim/95448)

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**Author:** [@Gravlax](https://discourse.julialang.org/u/Gravlax)\
**Replies:** 3\
**Last updated:** [July 15, 2025, 4:46pm UTC](https://discourse.julialang.org/t/plots-heatmap-and-xlim/95448 "2025-07-15T16:46:18Z")

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Dear all, We just came across a weird behaviour when using (inapproriately) xlim. In the MWE below, x and y axis are arrays/ranges of very large numbers (say a map of ~1000 km width/height given in unit meters, so orde…

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## [\[JuliaManifolds\] Digital Community Call](https://discourse.julialang.org/t/juliamanifolds-digital-community-call/119378)

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**Author:** [@kellertuer](https://discourse.julialang.org/u/kellertuer)\
**Replies:** 25\
**Last updated:** [July 15, 2025, 4:11pm UTC](https://discourse.julialang.org/t/juliamanifolds-digital-community-call/119378 "2025-07-15T16:11:57Z")

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I recently happily noticed that there is some increased activity around Manifolds in the Julia related social areas. So I want to try to maybe move some of these discussions to a digital meeting. Everyone is welcome to …

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## [Why is Ref() not reflecting the changes](https://discourse.julialang.org/t/why-is-ref-not-reflecting-the-changes/130740)

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**Author:** [@Farouk](https://discourse.julialang.org/u/Farouk)\
**Replies:** 2\
**Last updated:** [July 15, 2025, 1:57pm UTC](https://discourse.julialang.org/t/why-is-ref-not-reflecting-the-changes/130740 "2025-07-15T13:57:41Z")

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Hello I am playing with the Ref{T} and I cannot understand why when doing some updates the changes are visible via the variable holding the Ref and when doing other updates they don’t show up. I would appreciate your hel…

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## [Multithreaded for loops in Julia](https://discourse.julialang.org/t/multithreaded-for-loops-in-julia/130728)

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**Author:** [@random\_guy](https://discourse.julialang.org/u/random_guy)\
**Replies:** 11\
**Last updated:** [July 15, 2025, 1:52pm UTC](https://discourse.julialang.org/t/multithreaded-for-loops-in-julia/130728 "2025-07-15T13:52:21Z")

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Hello everyone, I am a bit new to multithreading and I would like to know what the best way to multithread a for loop is. The unthreaded for loop is the following, where I’ve included in-place matrix modification and th…

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## [Deserialization of Turing model fails in Quarto document](https://discourse.julialang.org/t/deserialization-of-turing-model-fails-in-quarto-document/130699)

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**Author:** [@khoffie](https://discourse.julialang.org/u/khoffie)\
**Replies:** 5\
**Last updated:** [July 15, 2025, 1:48pm UTC](https://discourse.julialang.org/t/deserialization-of-turing-model-fails-in-quarto-document/130699 "2025-07-15T13:48:41Z")

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I have several results from an optimization serialized to disk. They are all NamedTuples result = (mdl = A Turing Model, chn = A Chains object) Now I want to return predictions from a model in my test.qmd file: --- titl…

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## [Enzyme throws \`alwaysinline mustprogress\` when using GraphNeuralNetworks to mutate Graphs](https://discourse.julialang.org/t/enzyme-throws-alwaysinline-mustprogress-when-using-graphneuralnetworks-to-mutate-graphs/130684)

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**Author:** [@alonsoC1s](https://discourse.julialang.org/u/alonsoC1s)\
**Replies:** 6\
**Last updated:** [July 15, 2025, 11:53am UTC](https://discourse.julialang.org/t/enzyme-throws-alwaysinline-mustprogress-when-using-graphneuralnetworks-to-mutate-graphs/130684 "2025-07-15T11:53:46Z")

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I am trying to use GraphNeuralNetworks with Flux in a Deep RL style problem. What I want to achieve by using GraphNeuralNetworks is to obtain new weights for a modifed graph that changes every epoch, and run a simulation…

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## [BifurcationKit - Error using continuation()](https://discourse.julialang.org/t/bifurcationkit-error-using-continuation/130737)

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**Author:** [@jackwoodruff](https://discourse.julialang.org/u/jackwoodruff)\
**Replies:** 2\
**Last updated:** [July 15, 2025, 11:11am UTC](https://discourse.julialang.org/t/bifurcationkit-error-using-continuation/130737 "2025-07-15T11:11:36Z")

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Hello, I am new to Julia and trying to use BifurcationKit to do some continuation analysis. However, I have yet to get it working for my system of ODEs. Having debugged a few errors, I am now getting this one that I cann…

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## [Plotting a heatmap or surface plot](https://discourse.julialang.org/t/plotting-a-heatmap-or-surface-plot/130702)

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**Author:** [@Geegee](https://discourse.julialang.org/u/Geegee)\
**Replies:** 2\
**Last updated:** [July 14, 2025, 3:42pm UTC](https://discourse.julialang.org/t/plotting-a-heatmap-or-surface-plot/130702 "2025-07-14T15:42:31Z")

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Upon reading the tutorial in algebraofgraphics package it sounded really promising. I wanted to plot a heatmap of an image that was recorded with a camera which I wasn’t able to do. Is this just not supported or do I …

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## [Modeling Toolkit: mtkcompile taking forever for large systems](https://discourse.julialang.org/t/modeling-toolkit-mtkcompile-taking-forever-for-large-systems/130646)

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**Author:** [@njacki](https://discourse.julialang.org/u/njacki)\
**Replies:** 8\
**Last updated:** [July 15, 2025, 8:42am UTC](https://discourse.julialang.org/t/modeling-toolkit-mtkcompile-taking-forever-for-large-systems/130646 "2025-07-15T08:42:47Z")

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I recently re-coded an advection-reaction biogeochemical box model using ModelingToolkit.jl, that allows a smooth transition form papers’ equations to actual code and make it easily understandable. I build the model in a…

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## [Unreachable reached, v1.11.5: file github issue, or discuss here first?](https://discourse.julialang.org/t/unreachable-reached-v1-11-5-file-github-issue-or-discuss-here-first/130668)

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**Author:** [@DanielSussman](https://discourse.julialang.org/u/DanielSussman)\
**Replies:** 6\
**Last updated:** [July 14, 2025, 11:30pm UTC](https://discourse.julialang.org/t/unreachable-reached-v1-11-5-file-github-issue-or-discuss-here-first/130668 "2025-07-14T23:30:17Z")

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Hi all, Despite (or, in this case, almost certainly because of) being fairly new to using Julia I seemed to have stumbled upon an “unreachable reached” crash. On the one hand, I understand this is cause for celebration,…

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## [Is KNITRO.jl thread-safe](https://discourse.julialang.org/t/is-knitro-jl-thread-safe/130717)

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**Author:** [@CeterisPartybus](https://discourse.julialang.org/u/CeterisPartybus)\
**Replies:** 3\
**Last updated:** [July 14, 2025, 11:14pm UTC](https://discourse.julialang.org/t/is-knitro-jl-thread-safe/130717 "2025-07-14T23:14:14Z")

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Hi everyone, is it save to launch multiple instances of Knitro with JuMP at the same time? I aim to solve a couple of problems at the same time for different parameter combinations on multiple Julia threads. I would de…

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## [Trouble importing Calcium\_jll](https://discourse.julialang.org/t/trouble-importing-calcium-jll/130721)

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**Author:** [@jupiterDescending](https://discourse.julialang.org/u/jupiterDescending)\
**Replies:** 2\
**Last updated:** [July 14, 2025, 10:34pm UTC](https://discourse.julialang.org/t/trouble-importing-calcium-jll/130721 "2025-07-14T22:34:30Z")

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I’m trying to import packages such as AlgebraicNumbers that have Calcium\_jll as a dependency. When I try to do so, I get errors of the form Failed to precompile Calcium\_jll \[fcfa6d1b-d8ce-59d5-8c0a-c0d7f69e4f40\] to "/Us…

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## [Combinatorics.permutations creating a lot of allocations](https://discourse.julialang.org/t/combinatorics-permutations-creating-a-lot-of-allocations/130665)

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**Author:** [@jonbir](https://discourse.julialang.org/u/jonbir)\
**Replies:** 6\
**Last updated:** [July 14, 2025, 9:30pm UTC](https://discourse.julialang.org/t/combinatorics-permutations-creating-a-lot-of-allocations/130665 "2025-07-14T21:30:23Z")

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This is my first post here, so I hope I can explain the problem I’ve come across as I’m writing code for my master thesis in Maths. Compared to others here I’m definitely no expert, but I trusted code from Packages to gi…

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## [Early optimizer termination](https://discourse.julialang.org/t/early-optimizer-termination/130710)

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**Author:** [@mary](https://discourse.julialang.org/u/mary)\
**Replies:** 6\
**Last updated:** [July 14, 2025, 9:16pm UTC](https://discourse.julialang.org/t/early-optimizer-termination/130710 "2025-07-14T21:16:07Z")

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Hi I am using NLOP and MMA for optimization. The optimizer stops the optimization and reach the Xtol\_rel while I have large gradients which should make optimizer keep going. Could you please help me understand what is th…

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## [\[ANN\] Skia.jl - High performance 2D drawing/animation](https://discourse.julialang.org/t/ann-skia-jl-high-performance-2d-drawing-animation/130722)

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**Author:** [@stene](https://discourse.julialang.org/u/stene)\
**Replies:** 0\
**Last updated:** [July 14, 2025, 8:55pm UTC](https://discourse.julialang.org/t/ann-skia-jl-high-performance-2d-drawing-animation/130722 "2025-07-14T20:55:07Z")

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Skia is a 2D library which many browsers use. This text which you are reading, is probably generated through the Skia library. Skia.jl provides high performance visualization/drawing and works well together with GLFW.jl. …

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## [JuliaCon Global 2025: Update your availability on Pretalx, Accessibility Guidelines](https://discourse.julialang.org/t/juliacon-global-2025-update-your-availability-on-pretalx-accessibility-guidelines/130711)

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**Author:** [@ranjan](https://discourse.julialang.org/u/ranjan)\
**Replies:** 0\
**Last updated:** [July 14, 2025, 5:29pm UTC](https://discourse.julialang.org/t/juliacon-global-2025-update-your-availability-on-pretalx-accessibility-guidelines/130711 "2025-07-14T17:29:46Z")

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Hello, We are looking forward to seeing everyone next week at JuliaCon! A couple of notes and reminders: Please update your speaker availability on pretalx, we are still shuffling things around to get everyone accommo…

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## [Suppress printing methods in a piped script](https://discourse.julialang.org/t/suppress-printing-methods-in-a-piped-script/130698)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 7\
**Last updated:** [July 14, 2025, 2:36pm UTC](https://discourse.julialang.org/t/suppress-printing-methods-in-a-piped-script/130698 "2025-07-14T14:36:53Z")

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I am writing a short script in Julia, which is piped in from an encompassing Bash script. I want to suppress printing of “f (generic function with 1 method)” outputs, as in $ cat \<\<EOF | julia \> foo() = 1 \> EOF foo (gen…

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## [The function \`issuccess\` exists, but no method is defined for this combination of argument types](https://discourse.julialang.org/t/the-function-issuccess-exists-but-no-method-is-defined-for-this-combination-of-argument-types/130707)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 1\
**Last updated:** [July 14, 2025, 4:05pm UTC](https://discourse.julialang.org/t/the-function-issuccess-exists-but-no-method-is-defined-for-this-combination-of-argument-types/130707 "2025-07-14T16:05:03Z")

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I get the following error after updating my packages: The function \`issuccess\` exists, but no method is defined for this combination of argument types Partial stack trace (full stack trace too long and not allowed here…

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## [The issues of frequent recompilation and low computational efficiency in ITensor.jl](https://discourse.julialang.org/t/the-issues-of-frequent-recompilation-and-low-computational-efficiency-in-itensor-jl/130678)

<div class="topic-metadata">

**Author:** [@Hanze\_Li](https://discourse.julialang.org/u/Hanze_Li)\
**Replies:** 18\
**Last updated:** [July 14, 2025, 3:46pm UTC](https://discourse.julialang.org/t/the-issues-of-frequent-recompilation-and-low-computational-efficiency-in-itensor-jl/130678 "2025-07-14T15:46:24Z")

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I’m a beginner in Julia and I’m using ITensor.jl for computations in my project. However, I’ve noticed that the program runs with very low efficiency, and both CPU and memory usage are minimal. I’m not sure how to optimi…

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## [Juliacall and small binaries?](https://discourse.julialang.org/t/juliacall-and-small-binaries/130704)

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**Author:** [@croberts](https://discourse.julialang.org/u/croberts)\
**Replies:** 2\
**Last updated:** [July 14, 2025, 3:08pm UTC](https://discourse.julialang.org/t/juliacall-and-small-binaries/130704 "2025-07-14T15:08:41Z")

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With the imminent release of v1.12, I’m wondering how small binary compilation might subsequently facilitate Julia integration into non-Julia codebases? Obviously, one could write wrapper packages in \[R\] or Python, whic…

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## [Compulsively checking open issues for v1.12.0-beta4](https://discourse.julialang.org/t/compulsively-checking-open-issues-for-v1-12-0-beta4/130385)

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**Author:** [@croberts](https://discourse.julialang.org/u/croberts)\
**Replies:** 1\
**Last updated:** [July 14, 2025, 2:29pm UTC](https://discourse.julialang.org/t/compulsively-checking-open-issues-for-v1-12-0-beta4/130385 "2025-07-14T14:29:58Z")

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I am compulsively checking the milestones page: I am very excited for the 1.12.0 release. Redefining structs and small binary compilation are both going to be wonderful (even if it will be another year before all the…

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## [Is there a proper cryptographic implementation for Ed25519 digital signatures?](https://discourse.julialang.org/t/is-there-a-proper-cryptographic-implementation-for-ed25519-digital-signatures/130700)

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**Author:** [@Stephen](https://discourse.julialang.org/u/Stephen)\
**Replies:** 0\
**Last updated:** [July 14, 2025, 1:14pm UTC](https://discourse.julialang.org/t/is-there-a-proper-cryptographic-implementation-for-ed25519-digital-signatures/130700 "2025-07-14T13:14:23Z")

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I have generate the Ed25519 Key Pair for API request on Binance. And here is a Python sample code to show how to sign the payload with an Ed25519 key. #!/usr/bin/env python3 import base64 import requests import time …

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