# Latest

**URL:** https://discourse.julialang.org/latest.md?page=345

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

**Page:** 346

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## [VSCode taking a very long time to format saved file](https://discourse.julialang.org/t/vscode-taking-a-very-long-time-to-format-saved-file/92531)

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**Author:** [@brianguenter](https://discourse.julialang.org/u/brianguenter)\
**Replies:** 4\
**Last updated:** [August 11, 2024, 2:50am UTC](https://discourse.julialang.org/t/vscode-taking-a-very-long-time-to-format-saved-file/92531 "2024-08-11T02:50:11Z")

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I have VSCode set to automatically format .jl files on save, and also to save files whenever focus changes. Most of the time this works brilliantly, formatting my files in a flash. But occasionally formatting a file wil…

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## [Julia Symbolics error when taking derivative of a quotient](https://discourse.julialang.org/t/julia-symbolics-error-when-taking-derivative-of-a-quotient/118007)

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**Author:** [@orebas](https://discourse.julialang.org/u/orebas)\
**Replies:** 3\
**Last updated:** [August 11, 2024, 1:40am UTC](https://discourse.julialang.org/t/julia-symbolics-error-when-taking-derivative-of-a-quotient/118007 "2024-08-11T01:40:07Z")

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I’m getting an error, taking derivatives of expressions with quotients, that seems to be coming from Symbolics.jl or maybe SymbolicUtils.jl. It may be related to https://github.com/JuliaSymbolics/Symbolics.jl/issues/11…

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## [Writing data from Julia to an Excel Spreadsheet](https://discourse.julialang.org/t/writing-data-from-julia-to-an-excel-spreadsheet/53378)

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**Author:** [@Peter-Jolly](https://discourse.julialang.org/u/Peter-Jolly)\
**Replies:** 18\
**Last updated:** [August 10, 2024, 6:39pm UTC](https://discourse.julialang.org/t/writing-data-from-julia-to-an-excel-spreadsheet/53378 "2024-08-10T18:39:44Z")

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Hi, I am having some issues with exporting data to excel, using the XLSX package. In my Julia script I have a loop (I = 9000) whereby at each step (value oof i) I need to write out a vector y (130 elements) and several o…

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## [\[ANN\] SciML Small Grants Program: Funded Open Source Contributions!](https://discourse.julialang.org/t/ann-sciml-small-grants-program-funded-open-source-contributions/113708)

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**Author:** [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Replies:** 5\
**Last updated:** [August 10, 2024, 6:22pm UTC](https://discourse.julialang.org/t/ann-sciml-small-grants-program-funded-open-source-contributions/113708 "2024-08-10T18:22:26Z")

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I am very happy to announce the launch of the SciML Small Grants program! This is an open source contributions program to help improve the Julia SciML organization and some of the issues that have traditionally been o…

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## [Optimization maxtime in what units?](https://discourse.julialang.org/t/optimization-maxtime-in-what-units/118032)

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**Author:** [@dlakelan](https://discourse.julialang.org/u/dlakelan)\
**Replies:** 1\
**Last updated:** [August 10, 2024, 4:43pm UTC](https://discourse.julialang.org/t/optimization-maxtime-in-what-units/118032 "2024-08-10T16:43:18Z")

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I looked in the docs for Optimization.jl Common Solver Options (Solve Keyword Arguments) · Optimization.jl and it says " maxtime (the maximum of time the optimization runs for)" but it doesn’t mention the units. I’ve b…

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## [read!(io,Vector{MyStruct} not equivalent to loop over read with eachindex](https://discourse.julialang.org/t/read-io-vector-mystruct-not-equivalent-to-loop-over-read-with-eachindex/117969)

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**Author:** [@devel-chm](https://discourse.julialang.org/u/devel-chm)\
**Replies:** 4\
**Last updated:** [August 10, 2024, 3:55pm UTC](https://discourse.julialang.org/t/read-io-vector-mystruct-not-equivalent-to-loop-over-read-with-eachindex/117969 "2024-08-10T15:55:33Z")

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I have a packed structure of data in a binary stream that I wish to read in julia. I defined the type struct and then added a read method to dispatch for that type: struct MyStruct A::Int16 B::Int16 C::In…

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## [Installation has gotten worse](https://discourse.julialang.org/t/installation-has-gotten-worse/118012)

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**Author:** [@LordAncient](https://discourse.julialang.org/u/LordAncient)\
**Replies:** 8\
**Last updated:** [August 10, 2024, 1:42pm UTC](https://discourse.julialang.org/t/installation-has-gotten-worse/118012 "2024-08-10T13:42:46Z")

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Installing Julia used to be easier; it used to work like every other “app” on my Mac. Now, I’m asked to copy/paste some command (no explanation on the options on that command, isn’t it bad form to train users to copy/pas…

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## [\`print\` vs two-argument \`show\`/\`repr\` vs three-argument \`show\`/\`repr\` with \`MIME"text/plain"\`](https://discourse.julialang.org/t/print-vs-two-argument-show-repr-vs-three-argument-show-repr-with-mime-text-plain/117790)

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**Author:** [@Krastanov](https://discourse.julialang.org/u/Krastanov)\
**Replies:** 5\
**Last updated:** [August 10, 2024, 12:45pm UTC](https://discourse.julialang.org/t/print-vs-two-argument-show-repr-vs-three-argument-show-repr-with-mime-text-plain/117790 "2024-08-10T12:45:51Z")

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I asked this question some time ago on slack, posting now the answers here to avoid the slackhole of oblivion. Thanks to @jakobnissen, @Sukera, and @tecosaur for the information. Question When should I define methods…

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## [Is this Makie file not parseable by JuliaSyntax.jl?](https://discourse.julialang.org/t/is-this-makie-file-not-parseable-by-juliasyntax-jl/117997)

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**Author:** [@Sixzero](https://discourse.julialang.org/u/Sixzero)\
**Replies:** 3\
**Last updated:** [August 10, 2024, 12:02pm UTC](https://discourse.julialang.org/t/is-this-makie-file-not-parseable-by-juliasyntax-jl/117997 "2024-08-10T12:02:34Z")

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I just tried to parse the file: file\_path = ~/.julia/packages/Makie/rEu75/src/Makie.jl @info "Processing file: $file\_path" s = read(file\_path, String) @time expr2 = parsestmt(JuliaSyntax.SyntaxNode, "begin\\n"\*s\*"\\nend"…

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## [Tell SciML about Jacobian/VJP of ODEFunction](https://discourse.julialang.org/t/tell-sciml-about-jacobian-vjp-of-odefunction/117986)

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**Author:** [@hexaeder](https://discourse.julialang.org/u/hexaeder)\
**Replies:** 2\
**Last updated:** [August 10, 2024, 5:58am UTC](https://discourse.julialang.org/t/tell-sciml-about-jacobian-vjp-of-odefunction/117986 "2024-08-10T05:58:31Z")

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Hello, I have a class of ODEFunctions for which I know how to exploit a lot of the internal structure for efficient calculations of Jacobians. I am a bit confused about how I may teach the SciML-universe about those. Ge…

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## [Is there a way to obtain a colorant from color name provided as a Symbol?](https://discourse.julialang.org/t/is-there-a-way-to-obtain-a-colorant-from-color-name-provided-as-a-symbol/88663)

<div class="topic-metadata">

**Author:** [@BambOoxX](https://discourse.julialang.org/u/BambOoxX)\
**Replies:** 3\
**Last updated:** [August 10, 2024, 12:30am UTC](https://discourse.julialang.org/t/is-there-a-way-to-obtain-a-colorant-from-color-name-provided-as-a-symbol/88663 "2024-08-10T00:30:28Z")

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When using plotting packages in julia, colors can be passed using a symbol of their name e.g. :red. After searching in Makie’s source code, I could not find where the conversion from Symbol to colorant was done. At the…

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## [Sharing project with computers that don't have Julia installed](https://discourse.julialang.org/t/sharing-project-with-computers-that-dont-have-julia-installed/118005)

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**Author:** [@TravisB](https://discourse.julialang.org/u/TravisB)\
**Replies:** 8\
**Last updated:** [August 9, 2024, 10:29pm UTC](https://discourse.julialang.org/t/sharing-project-with-computers-that-dont-have-julia-installed/118005 "2024-08-09T22:29:56Z")

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I’m wondering what methods or packages exist to share a Julia project to other computers that don’t have Julia installed. The Julia code would be part of a commercial program, and we don’t want to require nontechnical en…

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## [Unicode Characters not allowed in the include function](https://discourse.julialang.org/t/unicode-characters-not-allowed-in-the-include-function/118014)

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**Author:** [@willheng](https://discourse.julialang.org/u/willheng)\
**Replies:** 3\
**Last updated:** [August 9, 2024, 10:57pm UTC](https://discourse.julialang.org/t/unicode-characters-not-allowed-in-the-include-function/118014 "2024-08-09T22:57:26Z")

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I created the a QR.jl file as following: using LinearAlgebra, Random, Statistics, SpecialFunctions, BenchmarkTools, LoopVectorization, Distributions function QuantileLoss(r::Vector{T}, τ::T, h::T) where T \<: AbstractFl…

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## [Parallel adaptive time-stepping for ODE problems at different time-scales](https://discourse.julialang.org/t/parallel-adaptive-time-stepping-for-ode-problems-at-different-time-scales/117982)

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**Author:** [@SteffenPL](https://discourse.julialang.org/u/SteffenPL)\
**Replies:** 1\
**Last updated:** [August 9, 2024, 10:55pm UTC](https://discourse.julialang.org/t/parallel-adaptive-time-stepping-for-ode-problems-at-different-time-scales/117982 "2024-08-09T22:55:28Z")

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I’m wondering if there is already a mechanism for ugly coupling of differential equations. In my application, I have one large-dimensional SDE and a reaction-diffusion PDE, which are coupled and have different time scal…

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## [Cumbersome array reshaping for broadcasting, unlike numpy](https://discourse.julialang.org/t/cumbersome-array-reshaping-for-broadcasting-unlike-numpy/21566)

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**Author:** [@jules](https://discourse.julialang.org/u/jules)\
**Replies:** 24\
**Last updated:** [August 9, 2024, 9:51am UTC](https://discourse.julialang.org/t/cumbersome-array-reshaping-for-broadcasting-unlike-numpy/21566 "2024-08-09T09:51:24Z")

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I’m still new to julia but one of my favorite aspects is dotted broadcasting syntax with my own custom and fast functions. However, in many cases I still find it cumbersome to use this functionality compared to my usual …

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## [AC simulation of arbitrary networks (from spice netlists)](https://discourse.julialang.org/t/ac-simulation-of-arbitrary-networks-from-spice-netlists/117972)

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**Author:** [@Maarco3108](https://discourse.julialang.org/u/Maarco3108)\
**Replies:** 4\
**Last updated:** [August 9, 2024, 9:48pm UTC](https://discourse.julialang.org/t/ac-simulation-of-arbitrary-networks-from-spice-netlists/117972 "2024-08-09T21:48:08Z")

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Hello guys, I want to create a Julia project for AC simulation of arbitrary networks (from spice netlists) using nodal or loop analysis and then calculate voltage and currents for all elements. There are only R, L, C l…

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## [How to code-gen unrolled loop over a tuple?](https://discourse.julialang.org/t/how-to-code-gen-unrolled-loop-over-a-tuple/117655)

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**Author:** [@bremez](https://discourse.julialang.org/u/bremez)\
**Replies:** 28\
**Last updated:** [August 9, 2024, 8:58pm UTC](https://discourse.julialang.org/t/how-to-code-gen-unrolled-loop-over-a-tuple/117655 "2024-08-09T20:58:52Z")

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I would like a function that accepts a tuple of functions, picks one at random based on provided relative weights, and passes it to a definite second function. Right now, I accomplish this as follows, for e.g. a tuple of…

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## [Franklin.jl list of pages](https://discourse.julialang.org/t/franklin-jl-list-of-pages/74758)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 5\
**Last updated:** [August 9, 2024, 7:07pm UTC](https://discourse.julialang.org/t/franklin-jl-list-of-pages/74758 "2024-08-09T19:07:36Z")

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I am experimenting with Franklin.jl, with the intention of migrating my blog from Hugo. Suppose I have a bunch of blog posts in a folder structure like pages/blog.md pages/posts/on-why-julia-is-awesome/index.md ... an…

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## [MTK error messages, change of use?](https://discourse.julialang.org/t/mtk-error-messages-change-of-use/117931)

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**Author:** [@LaraSchmalenstroer](https://discourse.julialang.org/u/LaraSchmalenstroer)\
**Replies:** 6\
**Last updated:** [August 9, 2024, 5:51pm UTC](https://discourse.julialang.org/t/mtk-error-messages-change-of-use/117931 "2024-08-09T17:51:51Z")

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Hi, I’m relatively new to Julia, so maybe I don’t see the problem here. I’m currently working with ModelingToolkit. To get used to the functionalities, I created a small model last week (which worked perfectly). using …

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## [New package \`Posets\`](https://discourse.julialang.org/t/new-package-posets/117981)

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**Author:** [@scheinerman](https://discourse.julialang.org/u/scheinerman)\
**Replies:** 8\
**Last updated:** [August 9, 2024, 4:33pm UTC](https://discourse.julialang.org/t/new-package-posets/117981 "2024-08-09T16:33:27Z")

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Announcing a new package for working with partially ordered sets: Posets. This package is based on Julia Graphs both in terms of dependency and design philosophy. Posets is available now in the Julia registry and more …

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## [KernelMatrices.jl - A software package for working with hierarchical matrices](https://discourse.julialang.org/t/kernelmatrices-jl-a-software-package-for-working-with-hierarchical-matrices/21696)

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**Author:** [@cgeoga](https://discourse.julialang.org/u/cgeoga)\
**Replies:** 22\
**Last updated:** [August 9, 2024, 4:30pm UTC](https://discourse.julialang.org/t/kernelmatrices-jl-a-software-package-for-working-with-hierarchical-matrices/21696 "2024-08-09T16:30:37Z")

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Hello everyone, I would like to announce a new software package for working with and compressing kernel matrices. The package KernelMatrices.jl provides a nicely overloaded KernelMatrix struct, an implementation of the …

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## [How to return additional arguments when optimizing or finding a root](https://discourse.julialang.org/t/how-to-return-additional-arguments-when-optimizing-or-finding-a-root/117994)

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**Author:** [@jovansam](https://discourse.julialang.org/u/jovansam)\
**Replies:** 6\
**Last updated:** [August 9, 2024, 4:12pm UTC](https://discourse.julialang.org/t/how-to-return-additional-arguments-when-optimizing-or-finding-a-root/117994 "2024-08-09T16:12:02Z")

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Hi All, I am looking for some ideas about how others have often handled this issue. Often, I have to solve an optimization problem and then pass out return some additional arguments. In the MWE example below, y is the c…

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## [JuliaHub notification spam?](https://discourse.julialang.org/t/juliahub-notification-spam/112770)

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**Author:** [@nsajko](https://discourse.julialang.org/u/nsajko)\
**Replies:** 2\
**Last updated:** [August 9, 2024, 3:08pm UTC](https://discourse.julialang.org/t/juliahub-notification-spam/112770 "2024-08-09T15:08:50Z")

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I have two notifications on JuliaHub that don’t seem to relate to me at all. Both are from 7 Apr 2024. They look like this (SOME\_USER and SOME\_OTHER\_USER are named something else in actuality): ‘SOME\_USER+112’s project…

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## [Order between \`@assume\_effects\` and \`@constprop\`](https://discourse.julialang.org/t/order-between-assume-effects-and-constprop/118001)

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**Author:** [@nsajko](https://discourse.julialang.org/u/nsajko)\
**Replies:** 1\
**Last updated:** [August 9, 2024, 2:58pm UTC](https://discourse.julialang.org/t/order-between-assume-effects-and-constprop/118001 "2024-08-09T14:58:31Z")

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I want to use both @assume\_effects :foldable and @constprop :aggressive on some of my methods. Does the order matter? I.e., is there a difference between these two forms: @assume\_effects :foldable @constprop :aggressive…

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## [OhMyREPL turns off QuikEdit mode](https://discourse.julialang.org/t/ohmyrepl-turns-off-quikedit-mode/117970)

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**Author:** [@devel-chm](https://discourse.julialang.org/u/devel-chm)\
**Replies:** 4\
**Last updated:** [August 9, 2024, 1:36pm UTC](https://discourse.julialang.org/t/ohmyrepl-turns-off-quikedit-mode/117970 "2024-08-09T13:36:31Z")

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Is there a way to prevent OhMyREPL from disabling the QuickEdit Mode in windows 10 terminal?

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## [Help Needed for Simulating Renewal Equation with DifferentialEquations.jl](https://discourse.julialang.org/t/help-needed-for-simulating-renewal-equation-with-differentialequations-jl/117989)

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**Author:** [@bachrathyd](https://discourse.julialang.org/u/bachrathyd)\
**Replies:** 3\
**Last updated:** [August 9, 2024, 12:57pm UTC](https://discourse.julialang.org/t/help-needed-for-simulating-renewal-equation-with-differentialequations-jl/117989 "2024-08-09T12:57:14Z")

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Hello everyone, I need some help with simulating a renewal equation, as described in this paper. Here’s a minimal example of the equation I’m working with: x(t) = a \* x(t - 1) + b \* x(t - √2) I want to solve this usin…

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## [Linking to a markdown document](https://discourse.julialang.org/t/linking-to-a-markdown-document/117947)

<div class="topic-metadata">

**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 7\
**Last updated:** [August 9, 2024, 12:41pm UTC](https://discourse.julialang.org/t/linking-to-a-markdown-document/117947 "2024-08-09T12:41:42Z")

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Is it possible to link to a mark-down document that just shows the document and not the Github menu etc? For example, I would like to find a way to show this document: Installation of Julia using an internet link and …

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## [Fun with Unicode: TemplateᐸTᐳ syntax and more](https://discourse.julialang.org/t/fun-with-unicode-template-t-syntax-and-more/117995)

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**Author:** [@stevengj](https://discourse.julialang.org/u/stevengj)\
**Replies:** 4\
**Last updated:** [August 9, 2024, 12:24pm UTC](https://discourse.julialang.org/t/fun-with-unicode-template-t-syntax-and-more/117995 "2024-08-09T12:24:36Z")

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Inspired by a Go example: julia\> const VectorᐸIntᐳ = Vector{Int} Vector{Int64} (alias for Array{Int64, 1}) julia\> \[1,2,3\] isa VectorᐸIntᐳ true julia\> x = 2 2 julia\> xᐸ3 = x\<3 true julia\> xᐸ3+4 5 julia\> ᐸ = \> \> (gen…

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## [Pkg on Julia 0.3.12](https://discourse.julialang.org/t/pkg-on-julia-0-3-12/117977)

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**Author:** [@Laura\_Maria\_Eslava](https://discourse.julialang.org/u/Laura_Maria_Eslava)\
**Replies:** 3\
**Last updated:** [August 9, 2024, 10:04am UTC](https://discourse.julialang.org/t/pkg-on-julia-0-3-12/117977 "2024-08-09T10:04:31Z")

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Hey, I need to use Julia package Phylonetworks, it says it’s supported for Julia versions 0.3.X and not tested on 0.4 or above, thus why I need to use the ANCIENT version (I know it’s not ideal but the package won’t inst…

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## [Recruiting: Research & Development Specialist in Software Satellite Simulation using the Julia Programming Language in Luxembourg](https://discourse.julialang.org/t/recruiting-research-development-specialist-in-software-satellite-simulation-using-the-julia-programming-language-in-luxembourg/117992)

<div class="topic-metadata">

**Author:** [@Ryanvuha](https://discourse.julialang.org/u/Ryanvuha)\
**Replies:** 0\
**Last updated:** [August 9, 2024, 9:45am UTC](https://discourse.julialang.org/t/recruiting-research-development-specialist-in-software-satellite-simulation-using-the-julia-programming-language-in-luxembourg/117992 "2024-08-09T09:45:54Z")

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Dear all, I hope this message finds you well. We are pleased to announce an exciting job opportunity at Sigcom, SnT, University of Luxembourg. We are currently looking for a “Research & Development Specialist in Softwa…

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