# Latest

**URL:** https://discourse.julialang.org/latest.md?page=149

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

**Page:** 150

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## [Julia v1.10.10 testing period](https://discourse.julialang.org/t/julia-v1-10-10-testing-period/129966)

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**Author:** [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Replies:** 0\
**Last updated:** [June 17, 2025, 10:34am UTC](https://discourse.julialang.org/t/julia-v1-10-10-testing-period/129966 "2025-06-17T10:34:53Z")

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The release-1.10 branch on the Julia repository now contains the set of commits we’re planning to tag as v1.10.10. The list of commits included since v1.10.9 is available here. As a patch release, it should be non-breaki…

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## [File zipping taking longer for large files](https://discourse.julialang.org/t/file-zipping-taking-longer-for-large-files/115963)

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**Author:** [@Sandy45](https://discourse.julialang.org/u/Sandy45)\
**Replies:** 16\
**Last updated:** [June 28, 2024, 2:34am UTC](https://discourse.julialang.org/t/file-zipping-taking-longer-for-large-files/115963 "2024-06-28T02:34:15Z")

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I am trying to zip files in the directory which is around 300 - 400 MB and it’s taking more than 15 mins to finish. Initially I was using custom function written using ZipFile package. I have tried using Base.zip which i…

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## [Method to unsafely close a mmap](https://discourse.julialang.org/t/method-to-unsafely-close-a-mmap/129900)

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**Author:** [@nhz2](https://discourse.julialang.org/u/nhz2)\
**Replies:** 1\
**Last updated:** [June 16, 2025, 7:41am UTC](https://discourse.julialang.org/t/method-to-unsafely-close-a-mmap/129900 "2025-06-16T07:41:38Z")

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Currently the Mmap.mmap function uses a finalizer to handle calling munmap or UnmapViewOfFile when the array is garbage collected. It is useful to be able to do this finalization eagerly despite the potential risks if t…

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## [Problem calling \`HypergeometricFunctions.pFq\`](https://discourse.julialang.org/t/problem-calling-hypergeometricfunctions-pfq/129953)

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**Author:** [@Cyan](https://discourse.julialang.org/u/Cyan)\
**Replies:** 3\
**Last updated:** [June 17, 2025, 5:16am UTC](https://discourse.julialang.org/t/problem-calling-hypergeometricfunctions-pfq/129953 "2025-06-17T05:16:25Z")

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I am trying to calculate the 2F1 function, where t is Real and z is a 51x51 array, but HypergeometricFunctions.pFq.((1, t / 2), 2 - t / 2, z) returns an error MethodError: no method matching pFq(::Tuple{Int64, Float6…

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## [How to make fly-through animations?](https://discourse.julialang.org/t/how-to-make-fly-through-animations/129775)

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**Author:** [@hsgg](https://discourse.julialang.org/u/hsgg)\
**Replies:** 6\
**Last updated:** [June 17, 2025, 4:54am UTC](https://discourse.julialang.org/t/how-to-make-fly-through-animations/129775 "2025-06-17T04:54:11Z")

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I am trying to use Makie.jl to create a nice 3D visualization of a galaxy survey. Essentially, I count the number of galaxies within a grid cell, and then use GLMakie.volume(vol). The interactive display is already prett…

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## [How to Manage Memory with Sequential, GPU-Intensive (e.g., PyTorch) Python Calls via PythonCall.jl](https://discourse.julialang.org/t/how-to-manage-memory-with-sequential-gpu-intensive-e-g-pytorch-python-calls-via-pythoncall-jl/129951)

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**Author:** [@Dale\_James\_Black](https://discourse.julialang.org/u/Dale_James_Black)\
**Replies:** 0\
**Last updated:** [June 17, 2025, 1:07am UTC](https://discourse.julialang.org/t/how-to-manage-memory-with-sequential-gpu-intensive-e-g-pytorch-python-calls-via-pythoncall-jl/129951 "2025-06-17T01:07:18Z")

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My Question I’m running into an issue where a long-running Python function seems to be terminated mid-execution. My question is: Are there any lower-level features or design patterns within PythonCall.jl that could help…

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## [Best method for creating many columns in dataframe for dummy variables](https://discourse.julialang.org/t/best-method-for-creating-many-columns-in-dataframe-for-dummy-variables/129940)

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**Author:** [@Snowy](https://discourse.julialang.org/u/Snowy)\
**Replies:** 1\
**Last updated:** [June 16, 2025, 10:17pm UTC](https://discourse.julialang.org/t/best-method-for-creating-many-columns-in-dataframe-for-dummy-variables/129940 "2025-06-16T22:17:02Z")

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Hi, I’m working on a problem that requires creating a lot of dummy variables (30+) based on dates and I’m wondering if my approach is optimal. Currently I am creating each variable as a set with the dates that correspo…

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## [Time-plotting the derivative of a species (reaction velocity) in catalyst](https://discourse.julialang.org/t/time-plotting-the-derivative-of-a-species-reaction-velocity-in-catalyst/129927)

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**Author:** [@Andre\_Renard](https://discourse.julialang.org/u/Andre_Renard)\
**Replies:** 1\
**Last updated:** [June 16, 2025, 9:37pm UTC](https://discourse.julialang.org/t/time-plotting-the-derivative-of-a-species-reaction-velocity-in-catalyst/129927 "2025-06-16T21:37:32Z")

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Hello, I can’t find an easy way to time-plot a derivative of a species, although I’m sure data are stored somewhere. Thanks for help. Andre

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## [Need help wrapping cuOpt in julia](https://discourse.julialang.org/t/need-help-wrapping-cuopt-in-julia/129808)

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**Author:** [@mtanneau](https://discourse.julialang.org/u/mtanneau)\
**Replies:** 13\
**Last updated:** [June 16, 2025, 8:29pm UTC](https://discourse.julialang.org/t/need-help-wrapping-cuopt-in-julia/129808 "2025-06-16T20:29:07Z")

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NVIDIA recently open-sourced their cuOpt solver suite. The source code is mostly C++, and it has a C API. I’m looking into wrapping that in Julia and setting up a JuMP/MOI interface so we can use cuOpt through JuMP. I h…

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## [Flux.jl manual training loop results in \`error gradent(F, ::Params) are deprecated\`](https://discourse.julialang.org/t/flux-jl-manual-training-loop-results-in-error-gradent-f-params-are-deprecated/129921)

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**Author:** [@Smara\_Kazenango](https://discourse.julialang.org/u/Smara_Kazenango)\
**Replies:** 2\
**Last updated:** [June 16, 2025, 7:16pm UTC](https://discourse.julialang.org/t/flux-jl-manual-training-loop-results-in-error-gradent-f-params-are-deprecated/129921 "2025-06-16T19:16:58Z")

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I have tried the below training loop in Julia and consistently receiving an error gradent(F, ::Params) are deprecated in Flux. How do I solve this error: epochs = 10 for epoch in 1:epochs epoch\_loss = 0.0 for (x\_bat…

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## [Julia can't find Qt6 DLL](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916)

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**Author:** [@flewer](https://discourse.julialang.org/u/flewer)\
**Replies:** 8\
**Last updated:** [June 16, 2025, 6:40pm UTC](https://discourse.julialang.org/t/julia-cant-find-qt6-dll/129916 "2025-06-16T18:40:30Z")

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Hello, This problem has been seen multiple times, however this has has not been resolved as far as I am aware. When installing Plots by using Pkg; Pkg.add("Plots") the installation fails because of Qt6 library files …

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## [Problem with length()](https://discourse.julialang.org/t/problem-with-length/129938)

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**Author:** [@FSUfan](https://discourse.julialang.org/u/FSUfan)\
**Replies:** 6\
**Last updated:** [June 16, 2025, 6:31pm UTC](https://discourse.julialang.org/t/problem-with-length/129938 "2025-06-16T18:31:59Z")

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Below is a piece of code that I use to analyze values retrieved from MySQL and placed in a data frame. The if… part is still in its infancy, so please don’t judge it too harshly. val = df\[!,"d8"\] println("val ", v…

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## [Pre-release versions of packages](https://discourse.julialang.org/t/pre-release-versions-of-packages/26926)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 22\
**Last updated:** [June 16, 2025, 5:32pm UTC](https://discourse.julialang.org/t/pre-release-versions-of-packages/26926 "2025-06-16T17:32:57Z")

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My understanding is that since Pkg uses SemVer, pre-release versions like 2.0.0-rc.1 and similarly alpha and beta would be technically allowed for package versions. What I would like to avoid is unsuspecting users upgra…

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## [Getting value from unregistered variables](https://discourse.julialang.org/t/getting-value-from-unregistered-variables/129869)

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**Author:** [@nhebel](https://discourse.julialang.org/u/nhebel)\
**Replies:** 3\
**Last updated:** [June 16, 2025, 5:13pm UTC](https://discourse.julialang.org/t/getting-value-from-unregistered-variables/129869 "2025-06-16T17:13:22Z")

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Sorry if this has already been asked - I tried searching and re-reading the documentation and couldn’t find anything. I have a model with unregistered variables (though we did assign base names/strings) and I’m trying to…

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## [Codecoverage button not working any longer](https://discourse.julialang.org/t/codecoverage-button-not-working-any-longer/129876)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 6\
**Last updated:** [June 16, 2025, 4:02pm UTC](https://discourse.julialang.org/t/codecoverage-button-not-working-any-longer/129876 "2025-06-16T16:02:49Z")

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On all of my repositories the button for code coverage is broken. Example: KiteModels.jl The link itself is still working, just the image is missing. Anybody else with this problem?

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## [Issue with backprop in a custom recurrent \`Lux\` layer](https://discourse.julialang.org/t/issue-with-backprop-in-a-custom-recurrent-lux-layer/128968)

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**Author:** [@pietro-butti](https://discourse.julialang.org/u/pietro-butti)\
**Replies:** 6\
**Last updated:** [June 16, 2025, 3:44pm UTC](https://discourse.julialang.org/t/issue-with-backprop-in-a-custom-recurrent-lux-layer/128968 "2025-06-16T15:44:58Z")

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I am trying to implement an autoencoder in Lux, inspired by the excellent one that I found in githun.com/lkulowski/LSTM\_encoder\_decoder, coded with PyTorch. (diagram taken from the link) Model overview The encoder i…

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## [Using Plots in Google Colab gives error](https://discourse.julialang.org/t/using-plots-in-google-colab-gives-error/129933)

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**Author:** [@AI\_hayasaka](https://discourse.julialang.org/u/AI_hayasaka)\
**Replies:** 0\
**Last updated:** [June 16, 2025, 2:22pm UTC](https://discourse.julialang.org/t/using-plots-in-google-colab-gives-error/129933 "2025-06-16T14:22:56Z")

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I did using Plots in Google Colab. Got this error: Julia Colab Error - Pastebin.com (I couldn’t paste the whole error here) Is this error because Colab doesn’t have Qt components and that’s why?

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## [SymbolicUtils rules behave differenty for some trigonometric functions](https://discourse.julialang.org/t/symbolicutils-rules-behave-differenty-for-some-trigonometric-functions/129438)

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**Author:** [@pmc4](https://discourse.julialang.org/u/pmc4)\
**Replies:** 4\
**Last updated:** [June 16, 2025, 1:52pm UTC](https://discourse.julialang.org/t/symbolicutils-rules-behave-differenty-for-some-trigonometric-functions/129438 "2025-06-16T13:52:40Z")

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Hello. I’m trying to use SymbolicUtils to transform a product of simple trigonometric functions using some trigonometric identities. I have found some problems when applying the rules I define. I would like to understand…

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## [Column read from dataframe is not equal to my string](https://discourse.julialang.org/t/column-read-from-dataframe-is-not-equal-to-my-string/129923)

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**Author:** [@FSUfan](https://discourse.julialang.org/u/FSUfan)\
**Replies:** 2\
**Last updated:** [June 16, 2025, 1:10pm UTC](https://discourse.julialang.org/t/column-read-from-dataframe-is-not-equal-to-my-string/129923 "2025-06-16T13:10:16Z")

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I read a MySQL table whose values change frequently and put them in a dataframe (df). In my example, the content of the “d8” column is definitely equal to “GM.” As mentioned above, the value of “d8” can vary, so I need …

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## [Can we have pre-release versions in the registry? (v2)](https://discourse.julialang.org/t/can-we-have-pre-release-versions-in-the-registry-v2/129887)

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**Author:** [@MilesCranmer](https://discourse.julialang.org/u/MilesCranmer)\
**Replies:** 31\
**Last updated:** [June 16, 2025, 12:50pm UTC](https://discourse.julialang.org/t/can-we-have-pre-release-versions-in-the-registry-v2/129887 "2025-06-16T12:50:18Z")

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TLDR: Problem: there is no way to register a pre-release of a package, which causes too much friction for potential early testers Goal: the general registry should allow pre-release candidates along the specification o…

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## [Computed supertypes](https://discourse.julialang.org/t/computed-supertypes/129913)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 2\
**Last updated:** [June 16, 2025, 12:08pm UTC](https://discourse.julialang.org/t/computed-supertypes/129913 "2025-06-16T12:08:21Z")

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I am wondering if supertypes that are computed are explicitly supported. Eg consider using Enzyme struct MockEnzymeMode \<: supertype(typeof(Enzyme.Reverse)) end where I construct an Enzyme.jl mode for testing an API (i…

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## [Is there a @parallel macro to parallelize independed expressions in a block?](https://discourse.julialang.org/t/is-there-a-parallel-macro-to-parallelize-independed-expressions-in-a-block/129861)

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**Author:** [@mwlidar](https://discourse.julialang.org/u/mwlidar)\
**Replies:** 8\
**Last updated:** [June 16, 2025, 11:20am UTC](https://discourse.julialang.org/t/is-there-a-parallel-macro-to-parallelize-independed-expressions-in-a-block/129861 "2025-06-16T11:20:44Z")

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I’m looking for a macro, call it @parallel here, that transcribes code like this: @parallel begin res1 = expr1 res2 = expr2 … resN = exprN end into tsk1 = Threads.@spawn expr1 tsk2 = Threads.@spawn exp…

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## [Using preallocated arrays of unknown type](https://discourse.julialang.org/t/using-preallocated-arrays-of-unknown-type/129895)

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**Author:** [@Miroboru](https://discourse.julialang.org/u/Miroboru)\
**Replies:** 6\
**Last updated:** [June 16, 2025, 10:26am UTC](https://discourse.julialang.org/t/using-preallocated-arrays-of-unknown-type/129895 "2025-06-16T10:26:11Z")

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I have an optimization problem where I have a function f(x) that is given to the optimizer (I use Optim.jl with the LBFGS() method). Inside this function f, I have another function g(x, y) that returns an array v. funct…

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## [Scaling issues in a nonlinear program](https://discourse.julialang.org/t/scaling-issues-in-a-nonlinear-program/129835)

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**Author:** [@fmanfredini1](https://discourse.julialang.org/u/fmanfredini1)\
**Replies:** 2\
**Last updated:** [June 16, 2025, 9:29am UTC](https://discourse.julialang.org/t/scaling-issues-in-a-nonlinear-program/129835 "2025-06-16T09:29:06Z")

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Dear all, I’m trying to solve a non-linear constrained program. The program consists of minimizing the sum of the relative squared deviations between the data and their model counterpart. I’m doing it using IpOpt on JUMP…

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## [Covariance Optimization for Joint estimation using UKF](https://discourse.julialang.org/t/covariance-optimization-for-joint-estimation-using-ukf/129677)

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**Author:** [@vh94](https://discourse.julialang.org/u/vh94)\
**Replies:** 5\
**Last updated:** [June 16, 2025, 9:08am UTC](https://discourse.julialang.org/t/covariance-optimization-for-joint-estimation-using-ukf/129677 "2025-06-16T09:08:14Z")

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Hello, I am using an Unscented Kalman Filter to perform a joint state and parameter estimation. I am trying to improve the accuracy of the parameters estimation foremost ( fit to the measured data is less important) . F…

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## [Solving a complex second order PDEs coupling with ODEs](https://discourse.julialang.org/t/solving-a-complex-second-order-pdes-coupling-with-odes/128792)

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**Author:** [@k\_zhou](https://discourse.julialang.org/u/k_zhou)\
**Replies:** 23\
**Last updated:** [June 16, 2025, 8:01am UTC](https://discourse.julialang.org/t/solving-a-complex-second-order-pdes-coupling-with-odes/128792 "2025-06-16T08:01:45Z")

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Hi, I try to solve a system including two 2nd order PDEs (as shown in the figure) coupling with six 1st ODEs. When I set the k’’ to zero, the PDEs transform to the 1st PDEs, and i can solve it using the ROCK4 in GPU. …

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## [JuMP.set\_upper\_bound on AffExpr?](https://discourse.julialang.org/t/jump-set-upper-bound-on-affexpr/129904)

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**Author:** [@WalterMadelim](https://discourse.julialang.org/u/WalterMadelim)\
**Replies:** 6\
**Last updated:** [June 16, 2025, 7:47am UTC](https://discourse.julialang.org/t/jump-set-upper-bound-on-affexpr/129904 "2025-06-16T07:47:06Z")

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Is it possible to extend the syntax of set\_upper\_bound to an expression, despite (perhaps) there might not be a corresponding solver API? Consider julia\> using JuMP julia\> model = Model(); julia\> @variable(model, x\[1…

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## [Getting my Julia package into the Julia General Registry](https://discourse.julialang.org/t/getting-my-julia-package-into-the-julia-general-registry/129908)

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**Author:** [@pvkabaila](https://discourse.julialang.org/u/pvkabaila)\
**Replies:** 4\
**Last updated:** [June 16, 2025, 7:31am UTC](https://discourse.julialang.org/t/getting-my-julia-package-into-the-julia-general-registry/129908 "2025-06-16T07:31:49Z")

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My Julia package CustomGaussQuadrature.jl is in a repository on my GitHub account. Using the description “How to develop a Julia package”, by Chris Rackauskas, I created a new Issue for this repository and entered the c…

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## [How to actually make a main function](https://discourse.julialang.org/t/how-to-actually-make-a-main-function/129881)

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**Author:** [@The\_Mastermage](https://discourse.julialang.org/u/The_Mastermage)\
**Replies:** 7\
**Last updated:** [June 15, 2025, 11:01pm UTC](https://discourse.julialang.org/t/how-to-actually-make-a-main-function/129881 "2025-06-15T23:01:02Z")

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Whilst trying to write a small HTTP server just for fun. I was trying to figure out how to use an actual main function. I am most of the time usualy just scripting, so I havent realy used the new @main syntax yet. The f…

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## [LMDiskANN.jl - Low Memory Disk Approximate Nearest Neighbors search](https://discourse.julialang.org/t/lmdiskann-jl-low-memory-disk-approximate-nearest-neighbors-search/129902)

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**Author:** [@mantzaris](https://discourse.julialang.org/u/mantzaris)\
**Replies:** 0\
**Last updated:** [June 15, 2025, 10:54pm UTC](https://discourse.julialang.org/t/lmdiskann-jl-low-memory-disk-approximate-nearest-neighbors-search/129902 "2025-06-15T22:54:07Z")

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I am happy and excited to share a recent publication where I showcase a software library called, LMDiskANN.jl (Low Memory Disk Approximate Nearest Neighbor Search). It is implemented in Julia Lang and allows users to sto…

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