# Latest

**URL:** https://discourse.julialang.org/latest.md?page=757

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

**Page:** 758

---

## [Adjoint vs row vector](https://discourse.julialang.org/t/adjoint-vs-row-vector/95853)

<div class="topic-metadata">

**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 2\
**Last updated:** [March 10, 2023, 11:42am UTC](https://discourse.julialang.org/t/adjoint-vs-row-vector/95853 "2023-03-10T11:42:06Z")

</div>

If I want to represent a time series as row vector, can I just represent it as adjoint? Or should I represent it as 1xn matrix? julia\> u=\[1,2,3\]' 1×3 adjoint(::Vector{Int64}) with eltype Int64: 1 2 3 julia\> \[1 2 3\]…

---

## [Multiple named varargs?](https://discourse.julialang.org/t/multiple-named-varargs/95856)

<div class="topic-metadata">

**Author:** [@stefkuypers](https://discourse.julialang.org/u/stefkuypers)\
**Replies:** 1\
**Last updated:** [March 10, 2023, 11:38am UTC](https://discourse.julialang.org/t/multiple-named-varargs/95856 "2023-03-10T11:38:16Z")

</div>

I’m wondering whether anyone has already suggested implementing the usage of multiple varargs in functions/methods. A concrete example I’m thinking about is the following: I have a processing function that I want to mak…

---

## [Method to Dict](https://discourse.julialang.org/t/method-to-dict/95840)

<div class="topic-metadata">

**Author:** [@Lincoln\_Hannah](https://discourse.julialang.org/u/Lincoln_Hannah)\
**Replies:** 2\
**Last updated:** [March 10, 2023, 10:34am UTC](https://discourse.julialang.org/t/method-to-dict/95840 "2023-03-10T10:34:08Z")

</div>

Is it possible to convert a method to a dictionary (or similar structure) with entries: Argument\_Name =\> Argument\_Type

---

## [Deregister package from local registry](https://discourse.julialang.org/t/deregister-package-from-local-registry/76992)

<div class="topic-metadata">

**Author:** [@jonniedie](https://discourse.julialang.org/u/jonniedie)\
**Replies:** 3\
**Last updated:** [March 10, 2023, 9:56am UTC](https://discourse.julialang.org/t/deregister-package-from-local-registry/76992 "2023-03-10T09:56:50Z")

</div>

I know you can’t remove packages from the general registry (for good reason), but is it possible to remove a package from a local registry that was set up using LocalRegistry.jl?

---

## [Incoherence between exact and finite differences Jacobian](https://discourse.julialang.org/t/incoherence-between-exact-and-finite-differences-jacobian/95816)

<div class="topic-metadata">

**Author:** [@GuyFromBosnia](https://discourse.julialang.org/u/GuyFromBosnia)\
**Replies:** 4\
**Last updated:** [March 10, 2023, 9:51am UTC](https://discourse.julialang.org/t/incoherence-between-exact-and-finite-differences-jacobian/95816 "2023-03-10T09:51:39Z")

</div>

I have this code here where I need to compute the exact jacobian matrix and the approximate jacobian matrix using the newton’s method I have the exact jacobian matrix giving me the correct results but the approximate is …

---

## [How to create SecondOrderODEProblem from ODESystem](https://discourse.julialang.org/t/how-to-create-secondorderodeproblem-from-odesystem/95847)

<div class="topic-metadata">

**Author:** [@TheLateKronos](https://discourse.julialang.org/u/TheLateKronos)\
**Replies:** 2\
**Last updated:** [March 10, 2023, 8:55am UTC](https://discourse.julialang.org/t/how-to-create-secondorderodeproblem-from-odesystem/95847 "2023-03-10T08:55:10Z")

</div>

I want to simulate a single body orbiting (0, 0) by VelocityVerlet() and using a system defined through ModelingToolkit. Functional code without modeling toolkit is as follows: using DifferentialEquations function ddu\_k…

---

## [Are there any parallels for Julia tasks?](https://discourse.julialang.org/t/are-there-any-parallels-for-julia-tasks/95828)

<div class="topic-metadata">

**Author:** [@PetrKryslUCSD](https://discourse.julialang.org/u/PetrKryslUCSD)\
**Replies:** 1\
**Last updated:** [March 10, 2023, 6:12am UTC](https://discourse.julialang.org/t/are-there-any-parallels-for-julia-tasks/95828 "2023-03-10T06:12:33Z")

</div>

Do the Julia tasks (in the sense of design) resemble any other task-based parallel system? For instance, do they have anything in common with the Task Parallel Library of Microsoft? And, what are good examples of packa…

---

## [Cell width in Pluto Notebook](https://discourse.julialang.org/t/cell-width-in-pluto-notebook/49761)

<div class="topic-metadata">

**Author:** [@GHRALIMA](https://discourse.julialang.org/u/GHRALIMA)\
**Replies:** 10\
**Last updated:** [March 10, 2023, 7:56am UTC](https://discourse.julialang.org/t/cell-width-in-pluto-notebook/49761 "2023-03-10T07:56:13Z")

</div>

I’ve changed from Jupyter to Pluto notebook a couple months ago, and so far I’m having a very nice experience with it. But sometimes, when I plot some results to show my students, I would like to have a wider cell. Is th…

---

## [Fit Gaussian process to training points](https://discourse.julialang.org/t/fit-gaussian-process-to-training-points/90841)

<div class="topic-metadata">

**Author:** [@jar1](https://discourse.julialang.org/u/jar1)\
**Replies:** 7\
**Last updated:** [January 14, 2023, 7:01pm UTC](https://discourse.julialang.org/t/fit-gaussian-process-to-training-points/90841 "2023-01-14T19:01:22Z")

</div>

For self-study I am trying to fit a GP according to the formula in the GPML book I am able to draw some random functions from the prior distribution, but when I try to condition on the data it seems to make no differ…

---

## [What do you think this means when transcribed into English?](https://discourse.julialang.org/t/what-do-you-think-this-means-when-transcribed-into-english/95826)

<div class="topic-metadata">

**Author:** [@PetrKryslUCSD](https://discourse.julialang.org/u/PetrKryslUCSD)\
**Replies:** 7\
**Last updated:** [March 10, 2023, 5:20am UTC](https://discourse.julialang.org/t/what-do-you-think-this-means-when-transcribed-into-english/95826 "2023-03-10T05:20:59Z")

</div>

From the manual: Currently, all tasks in Julia are executed in a single OS thread co-operatively. :stuck\_out\_tongue\_winking\_eye:

---

## [Light position for 3D surface plots with bands](https://discourse.julialang.org/t/light-position-for-3d-surface-plots-with-bands/95823)

<div class="topic-metadata">

**Author:** [@yhchang96](https://discourse.julialang.org/u/yhchang96)\
**Replies:** 1\
**Last updated:** [March 10, 2023, 4:57am UTC](https://discourse.julialang.org/t/light-position-for-3d-surface-plots-with-bands/95823 "2023-03-10T04:57:10Z")

</div>

I tried following the example in this tutorial to create a 3D surface plot with a ‘side band’: using GLMakie; GLMakie.activate!() # v.0.8.2 cmap = Reverse(:Spectral\_4) lightpos1 = Vec3f(4, -5, 5) set\_theme!() update…

---

## [Avoid disk write when reading gzipped file from s3](https://discourse.julialang.org/t/avoid-disk-write-when-reading-gzipped-file-from-s3/95836)

<div class="topic-metadata">

**Author:** [@ilanggear](https://discourse.julialang.org/u/ilanggear)\
**Replies:** 2\
**Last updated:** [March 10, 2023, 3:03am UTC](https://discourse.julialang.org/t/avoid-disk-write-when-reading-gzipped-file-from-s3/95836 "2023-03-10T03:03:05Z")

</div>

I have a goal similar to the following thread, but my data is gzipped text, not tiff. Retrieve data from Amazon S3?. I want to read many 130M gzipped text files from s3 one by one, unzip each file, extract a regex match…

---

## [Modular local projects and \`include(...)\`](https://discourse.julialang.org/t/modular-local-projects-and-include/95781)

<div class="topic-metadata">

**Author:** [@tgross35](https://discourse.julialang.org/u/tgross35)\
**Replies:** 8\
**Last updated:** [March 10, 2023, 2:59am UTC](https://discourse.julialang.org/t/modular-local-projects-and-include/95781 "2023-03-10T02:59:00Z")

</div>

Are local files/modules ever immediately importable with using , or is include always required? For example, with a structure like this: Project.toml src/ # Source for a local library \`MyLib\` MyLib.j…

---

## [Tools for continuous releases](https://discourse.julialang.org/t/tools-for-continuous-releases/95835)

<div class="topic-metadata">

**Author:** [@simonbyrne](https://discourse.julialang.org/u/simonbyrne)\
**Replies:** 0\
**Last updated:** [March 10, 2023, 1:21am UTC](https://discourse.julialang.org/t/tools-for-continuous-releases/95835 "2023-03-10T01:21:04Z")

</div>

What are some good tools for making continuous releases (i.e. tagging on most merges)? I’d like something that involves as little effort on my part as possible.

---

## [Download package/artifacts versions associated with different metadata, e.g. V x.x.x+1](https://discourse.julialang.org/t/download-package-artifacts-versions-associated-with-different-metadata-e-g-v-x-x-x-1/95833)

<div class="topic-metadata">

**Author:** [@croberts](https://discourse.julialang.org/u/croberts)\
**Replies:** 0\
**Last updated:** [March 10, 2023, 12:01am UTC](https://discourse.julialang.org/t/download-package-artifacts-versions-associated-with-different-metadata-e-g-v-x-x-x-1/95833 "2023-03-10T00:01:13Z")

</div>

I am trying to get the correct artifacts files into an airgapped environment. We have a local registry installed; using this registry, we can Pkg.add packages from the registry into various environments, which works fin…

---

## [SciMLSensitivity.jl : adjoint\_sensitivities and CVODE\_BDF crashes for medium sized stiff ODE model](https://discourse.julialang.org/t/scimlsensitivity-jl-adjoint-sensitivities-and-cvode-bdf-crashes-for-medium-sized-stiff-ode-model/95667)

<div class="topic-metadata">

**Author:** [@sebapersson](https://discourse.julialang.org/u/sebapersson)\
**Replies:** 11\
**Last updated:** [March 9, 2023, 11:35pm UTC](https://discourse.julialang.org/t/scimlsensitivity-jl-adjoint-sensitivities-and-cvode-bdf-crashes-for-medium-sized-stiff-ode-model/95667 "2023-03-09T23:35:43Z")

</div>

We have recently done some benchmarks to test the performance of DifferentialEquations.jl for parameter estimation for ODE models in the field of system biology. Overall, DifferentialEquations has performed great, but we…

---

## [Dot broadcasting of an assignment to a tuple](https://discourse.julialang.org/t/dot-broadcasting-of-an-assignment-to-a-tuple/95829)

<div class="topic-metadata">

**Author:** [@dmbates](https://discourse.julialang.org/u/dmbates)\
**Replies:** 1\
**Last updated:** [March 9, 2023, 11:09pm UTC](https://discourse.julialang.org/t/dot-broadcasting-of-an-assignment-to-a-tuple/95829 "2023-03-09T23:09:20Z")

</div>

The context of this question is an algorithm called iteratively re-weighted least squares (IRLS) used to fit generalized linear models (GLMs). At each iteration vectors of the mean responses, μ, the unit deviances, dev, …

---

## [Help optimising an expectation function](https://discourse.julialang.org/t/help-optimising-an-expectation-function/91181)

<div class="topic-metadata">

**Author:** [@jacobusmmsmit](https://discourse.julialang.org/u/jacobusmmsmit)\
**Replies:** 10\
**Last updated:** [March 9, 2023, 7:12pm UTC](https://discourse.julialang.org/t/help-optimising-an-expectation-function/91181 "2023-03-09T19:12:46Z")

</div>

Hey everyone, Apologies for the vague title, I think part of my problem is I don’t know the words for what I’m doing so I can’t search for it. Anyway: I have a function of N boolean arguments. I would like to be able t…

---

## [Good practice question: where do you save custom sysimages built using PackageCompiler](https://discourse.julialang.org/t/good-practice-question-where-do-you-save-custom-sysimages-built-using-packagecompiler/95824)

<div class="topic-metadata">

**Author:** [@curious](https://discourse.julialang.org/u/curious)\
**Replies:** 0\
**Last updated:** [March 9, 2023, 10:06pm UTC](https://discourse.julialang.org/t/good-practice-question-where-do-you-save-custom-sysimages-built-using-packagecompiler/95824 "2023-03-09T22:06:58Z")

</div>

Hi, I was wondering what is a good place to store custom sysimages built using the PackageCompiler? Is it okay to store in somewhere in ~/.julia or should that be left alone for julia generated files (except startup.jl)…

---

## [Code-golfing FizzBuzz](https://discourse.julialang.org/t/code-golfing-fizzbuzz/95354)

<div class="topic-metadata">

**Author:** [@xiaodai](https://discourse.julialang.org/u/xiaodai)\
**Replies:** 86\
**Last updated:** [March 9, 2023, 8:01pm UTC](https://discourse.julialang.org/t/code-golfing-fizzbuzz/95354 "2023-03-09T20:01:50Z")

</div>

Just realised there is no Julia soluton to this on Code golf code golf - 1, 2, Fizz, 4, Buzz - Code Golf Stack Exchange

---

## [How to trace a Package to it's source Registry?](https://discourse.julialang.org/t/how-to-trace-a-package-to-its-source-registry/95821)

<div class="topic-metadata">

**Author:** [@Brad\_Carman](https://discourse.julialang.org/u/Brad_Carman)\
**Replies:** 0\
**Last updated:** [March 9, 2023, 7:43pm UTC](https://discourse.julialang.org/t/how-to-trace-a-package-to-its-source-registry/95821 "2023-03-09T19:43:15Z")

</div>

When sharing a project (Julia scripts and respective Project.toml & Manifest.toml) with a co-worker, is there a way for this individual to know where the packages contained in the Project.toml come from? If some of the p…

---

## [How to make a contour plot from a parametric surface in Makie?](https://discourse.julialang.org/t/how-to-make-a-contour-plot-from-a-parametric-surface-in-makie/95818)

<div class="topic-metadata">

**Author:** [@leogabac](https://discourse.julialang.org/u/leogabac)\
**Replies:** 1\
**Last updated:** [March 9, 2023, 7:14pm UTC](https://discourse.julialang.org/t/how-to-make-a-contour-plot-from-a-parametric-surface-in-makie/95818 "2023-03-09T19:14:40Z")

</div>

Hello! Recently for a project I was wondering if there is any way to visualize the contour plot of a parametric surface in Makie. Typically, if I have the explicit expression f(x,y), I can just evaluate in a domain and …

---

## [Alternative to function as field in struct](https://discourse.julialang.org/t/alternative-to-function-as-field-in-struct/55094)

<div class="topic-metadata">

**Author:** [@espenmei](https://discourse.julialang.org/u/espenmei)\
**Replies:** 17\
**Last updated:** [March 9, 2023, 7:27pm UTC](https://discourse.julialang.org/t/alternative-to-function-as-field-in-struct/55094 "2023-03-09T19:27:01Z")

</div>

Hi, I was hoping you could help me out with a proper way to solve this problem in Julia. I have defined a struct that represents a statistical model. Among other things, this holds a vector of parameters that at some p…

---

## [Pre-release annoucement: Aeron ultra-low latency IPC/UDP multicast library](https://discourse.julialang.org/t/pre-release-annoucement-aeron-ultra-low-latency-ipc-udp-multicast-library/95820)

<div class="topic-metadata">

**Author:** [@sefffal](https://discourse.julialang.org/u/sefffal)\
**Replies:** 0\
**Last updated:** [March 9, 2023, 7:11pm UTC](https://discourse.julialang.org/t/pre-release-annoucement-aeron-ultra-low-latency-ipc-udp-multicast-library/95820 "2023-03-09T19:11:55Z")

</div>

Aeron.jl Hello all, We’ve been working on wrapping the aeron c-library for use in Julia. Aeron is an open source library for reliable UDP unicast/multicast and shared memory IPC with a focus on very low latency and it o…

---

## [Holomorphic function not being recognized as such by ChainRules.jl](https://discourse.julialang.org/t/holomorphic-function-not-being-recognized-as-such-by-chainrules-jl/95806)

<div class="topic-metadata">

**Author:** [@Hareruya](https://discourse.julialang.org/u/Hareruya)\
**Replies:** 2\
**Last updated:** [March 9, 2023, 5:11pm UTC](https://discourse.julialang.org/t/holomorphic-function-not-being-recognized-as-such-by-chainrules-jl/95806 "2023-03-09T17:11:56Z")

</div>

Greetings. I am currently trying to implement some code using @scalar\_rule for a custom gradient for a very important group of functions in Physics and Engineering, the spherical bessel functions, in this case particula…

---

## [Dispatch on Core.IntrinsicFunction](https://discourse.julialang.org/t/dispatch-on-core-intrinsicfunction/95814)

<div class="topic-metadata">

**Author:** [@willtebbutt](https://discourse.julialang.org/u/willtebbutt)\
**Replies:** 0\
**Last updated:** [March 9, 2023, 6:05pm UTC](https://discourse.julialang.org/t/dispatch-on-core-intrinsicfunction/95814 "2023-03-09T18:05:39Z")

</div>

Consider foo(::typeof(Core.Intrinsics.add\_float)) = "add two floats" foo(::typeof(Core.Intrinsics.add\_int)) = "add two ints" If you ask what methods of foo are available, you’ll see julia\> methods(foo) # 1 method for…

---

## [Optimization level setting (-O / --optimize)](https://discourse.julialang.org/t/optimization-level-setting-o-optimize/95809)

<div class="topic-metadata">

**Author:** [@airpmb](https://discourse.julialang.org/u/airpmb)\
**Replies:** 1\
**Last updated:** [March 9, 2023, 4:38pm UTC](https://discourse.julialang.org/t/optimization-level-setting-o-optimize/95809 "2023-03-09T16:38:38Z")

</div>

Couple of questions regarding this. First, is there a good way to determine inside the Julia session what the current setting of the optimization level is? Second, is there some reason this behavior is correct? $ juli…

---

## [Unsatisfiable requirements error between my personal packages](https://discourse.julialang.org/t/unsatisfiable-requirements-error-between-my-personal-packages/95802)

<div class="topic-metadata">

**Author:** [@Nathan\_Boyer](https://discourse.julialang.org/u/Nathan_Boyer)\
**Replies:** 5\
**Last updated:** [March 9, 2023, 4:32pm UTC](https://discourse.julialang.org/t/unsatisfiable-requirements-error-between-my-personal-packages/95802 "2023-03-09T16:32:42Z")

</div>

I wrote a package ASME\_SectionVIII\_Division3\_Edition2021 which depends on two other packages that I wrote, KM620 and KD232, plus some other public packages. (None of my packages have real version numbers because I don’t …

---

## [\[ANN\] ForestPlot.jl - Draw forest plots for meta-analysis study](https://discourse.julialang.org/t/ann-forestplot-jl-draw-forest-plots-for-meta-analysis-study/95811)

<div class="topic-metadata">

**Author:** [@PharmCat](https://discourse.julialang.org/u/PharmCat)\
**Replies:** 0\
**Last updated:** [March 9, 2023, 4:20pm UTC](https://discourse.julialang.org/t/ann-forestplot-jl-draw-forest-plots-for-meta-analysis-study/95811 "2023-03-09T16:20:41Z")

</div>

ForestPlot.jl is a simple package based on Plots.jl made to draw forest plots for meta-analysis study like that:

---

## [\#=ERROR showing exception stack=# - What to do?](https://discourse.julialang.org/t/error-showing-exception-stack-what-to-do/95805)

<div class="topic-metadata">

**Author:** [@xtalax](https://discourse.julialang.org/u/xtalax)\
**Replies:** 0\
**Last updated:** [March 9, 2023, 3:39pm UTC](https://discourse.julialang.org/t/error-showing-exception-stack-what-to-do/95805 "2023-03-09T15:39:47Z")

</div>

Hi all, I’m working on a feature and I’ve gotten to a stage where almost anything I do is giving me the following error: ODAEProblem Test: Error During Test at /home/alex/.julia/packages/SafeTestsets/A83XK/src/SafeTest…

[Previous page](https://discourse.julialang.org/latest.md?page=756)

[Next page](https://discourse.julialang.org/latest.md?page=758)