# \#julia

**URL:** https://discourse.julialang.org/tag/julia/1321.md

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

---

## [In Julia, how can I export a Tiddler (created for TiddlyHost) as a JSON file?](https://discourse.julialang.org/t/in-julia-how-can-i-export-a-tiddler-created-for-tiddlyhost-as-a-json-file/139435)

<div class="topic-metadata">

**Author:** [@haroldnick0](https://discourse.julialang.org/u/haroldnick0)\
**Replies:** 2\
**Last updated:** [September 15, 2026, 4:43am UTC](https://discourse.julialang.org/t/in-julia-how-can-i-export-a-tiddler-created-for-tiddlyhost-as-a-json-file/139435 "2026-09-15T04:43:40Z")

</div>

In Julia, how can I export a Tiddler (created for TiddlyHost) as a JSON file?

---

## [In my JuMP model, the LP file preserves the original variable names, but the MPS file appears to rename them, so how can I map the Gurobi .sol solution back to the original JuMP variables?](https://discourse.julialang.org/t/in-my-jump-model-the-lp-file-preserves-the-original-variable-names-but-the-mps-file-appears-to-rename-them-so-how-can-i-map-the-gurobi-sol-solution-back-to-the-original-jump-variables/139462)

<div class="topic-metadata">

**Author:** [@amit\_97](https://discourse.julialang.org/u/amit_97)\
**Replies:** 2\
**Last updated:** [September 14, 2026, 10:19pm UTC](https://discourse.julialang.org/t/in-my-jump-model-the-lp-file-preserves-the-original-variable-names-but-the-mps-file-appears-to-rename-them-so-how-can-i-map-the-gurobi-sol-solution-back-to-the-original-jump-variables/139462 "2026-09-14T22:19:23Z")

</div>

Hi everyone, I’m generating both .lp and .mps files from the same JuMP model using Gurobi. In the LP file, the original JuMP variable names are preserved, for example: 1200 x2\[1,(1,\_0)\] - 41054.62117964038 B2\[1,(1,\_0)…

---

## [Using begin ... end in Julia](https://discourse.julialang.org/t/using-begin-end-in-julia/138963)

<div class="topic-metadata">

**Author:** [@haroldnick0](https://discourse.julialang.org/u/haroldnick0)\
**Replies:** 3\
**Last updated:** [August 24, 2026, 11:19pm UTC](https://discourse.julialang.org/t/using-begin-end-in-julia/138963 "2026-08-24T23:19:54Z")

</div>

Hello everyone, My name is Harold Castro, and I am a monitor at the Faculty of Communication and Language. I am participating in the Archivo 90 project, where we use Julia to process data and publish it in TiddlyHost. I…

---

## [Creating and exporting a tiddler from Julia in MultiWikis.jl](https://discourse.julialang.org/t/creating-and-exporting-a-tiddler-from-julia-in-multiwikis-jl/139025)

<div class="topic-metadata">

**Author:** [@haroldnick0](https://discourse.julialang.org/u/haroldnick0)\
**Replies:** 1\
**Last updated:** [August 24, 2026, 6:49pm UTC](https://discourse.julialang.org/t/creating-and-exporting-a-tiddler-from-julia-in-multiwikis-jl/139025 "2026-08-24T18:49:22Z")

</div>

How can I create a tiddler from Julia within MultiWikis.jl, add it to the archivo90\_harold tiddlers file, and export it to the repository so that it can then be committed?

---

## [Is it possible to avoid the \`TiddlyWikiModule\` prefix when using \`include("tiddlywiki.jl")\` in Pluto notebooks?](https://discourse.julialang.org/t/is-it-possible-to-avoid-the-tiddlywikimodule-prefix-when-using-include-tiddlywiki-jl-in-pluto-notebooks/139026)

<div class="topic-metadata">

**Author:** [@haroldnick0](https://discourse.julialang.org/u/haroldnick0)\
**Replies:** 1\
**Last updated:** [August 24, 2026, 6:40pm UTC](https://discourse.julialang.org/t/is-it-possible-to-avoid-the-tiddlywikimodule-prefix-when-using-include-tiddlywiki-jl-in-pluto-notebooks/139026 "2026-08-24T18:40:37Z")

</div>

Is it possible to avoid the TiddlyWikiModule prefix when using include("tiddlywiki.jl") in Pluto notebooks? Currently, I have to call functions using TiddlyWikiModule.something(). I would like to know if I can make them…

---

## [Presentation of project](https://discourse.julialang.org/t/presentation-of-project/138962)

<div class="topic-metadata">

**Author:** [@haroldnick0](https://discourse.julialang.org/u/haroldnick0)\
**Replies:** 1\
**Last updated:** [August 21, 2026, 7:38am UTC](https://discourse.julialang.org/t/presentation-of-project/138962 "2026-08-21T07:38:23Z")

</div>

Hello everyone, My name is Harold Castro. I am a monitor at the Faculty of Communication and Language. I am participating in a project where we are creating a data narrative using Julia. The project is related to the 9…

---

## [Are LLVM/rust's floating-point issues on 32-bit platforms relevant to Julia?](https://discourse.julialang.org/t/are-llvm-rusts-floating-point-issues-on-32-bit-platforms-relevant-to-julia/133852)

<div class="topic-metadata">

**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 2\
**Last updated:** [January 30, 2026, 12:21pm UTC](https://discourse.julialang.org/t/are-llvm-rusts-floating-point-issues-on-32-bit-platforms-relevant-to-julia/133852 "2026-01-30T12:21:39Z")

</div>

I noticed: This is an LLVM bug: rustc is generating LLVM IR with the intended semantics This is about Rust, but might translate to Julia (and more) since both use LLVM?! Both have tier 1 support for 32-bit on Win…

---

## [\[10757\] signal 11 (1): Segmentation fault](https://discourse.julialang.org/t/10757-signal-11-1-segmentation-fault/131139)

<div class="topic-metadata">

**Author:** [@redti](https://discourse.julialang.org/u/redti)\
**Replies:** 37\
**Last updated:** [July 30, 2025, 4:42pm UTC](https://discourse.julialang.org/t/10757-signal-11-1-segmentation-fault/131139 "2025-07-30T16:42:04Z")

</div>

Hi, I’m completely new to Julia, I’d like to begging by expressing my appreciation for the FreeBSD installation package to the Dev responsible for it. I’m under FreeBSD 14.3 patch 1. I’m using KDE, Plasma 6.4.3. The w…

---

## [Multiple Loops in Julia](https://discourse.julialang.org/t/multiple-loops-in-julia/127814)

<div class="topic-metadata">

**Author:** [@MarcoBPCode](https://discourse.julialang.org/u/MarcoBPCode)\
**Replies:** 7\
**Last updated:** [April 8, 2025, 7:47am UTC](https://discourse.julialang.org/t/multiple-loops-in-julia/127814 "2025-04-08T07:47:31Z")

</div>

HI, I’m writing a code that need multiples loops inside each other and i want to make parallelization it. Loop1{ Loop2{ Loop3{ Loop4{ … } } } } Can recommended some techique ? o maybe something to read o impl…

---

## [Strange outcome for the Julia list with different type of elements](https://discourse.julialang.org/t/strange-outcome-for-the-julia-list-with-different-type-of-elements/125409)

<div class="topic-metadata">

**Author:** [@miniskar](https://discourse.julialang.org/u/miniskar)\
**Replies:** 5\
**Last updated:** [February 2, 2025, 5:29am UTC](https://discourse.julialang.org/t/strange-outcome-for-the-julia-list-with-different-type-of-elements/125409 "2025-02-02T05:29:27Z")

</div>

Here is the minimum working example. julia\> f= rand(Float32, 8) 8-element Vector{Float32}: 0.31442094 0.31442094 0.2593087 0.2593087 0.11091578 0.11091578 0.14340413 0.14340413 julia\> i = rand(Int32, 8) 8-eleme…

---

## [ForwardDiff - MethodError: no method matching extract\_jacobian](https://discourse.julialang.org/t/forwarddiff-methoderror-no-method-matching-extract-jacobian/124724)

<div class="topic-metadata">

**Author:** [@Adrien\_Vet](https://discourse.julialang.org/u/Adrien_Vet)\
**Replies:** 3\
**Last updated:** [January 13, 2025, 6:18pm UTC](https://discourse.julialang.org/t/forwarddiff-methoderror-no-method-matching-extract-jacobian/124724 "2025-01-13T18:18:33Z")

</div>

Hello everyone, I’m struggling with the differentiation of some functions using the ForwardDiff package. Here is a reproducible example : using StaticArrays using ForwardDiff function f\_test(x) return exp(x\[1\])…

---

## [Sieve of Eratosthenes iterator](https://discourse.julialang.org/t/sieve-of-eratosthenes-iterator/121512)

<div class="topic-metadata">

**Author:** [@Brinkhuis](https://discourse.julialang.org/u/Brinkhuis)\
**Replies:** 1\
**Last updated:** [October 20, 2024, 7:56pm UTC](https://discourse.julialang.org/t/sieve-of-eratosthenes-iterator/121512 "2024-10-20T19:56:40Z")

</div>

I would like to create an Iterator for prime numbers (I know there is a package Primes). Based on Pythons code for the Sieve of Eratosthenes I coded a function sieve(). sieve(10) returns a vector of the first 10 primes. …

---

## [Staff/Senior Software Engineer, (Space) Mission Planning](https://discourse.julialang.org/t/staff-senior-software-engineer-space-mission-planning/121178)

<div class="topic-metadata">

**Author:** [@bernie](https://discourse.julialang.org/u/bernie)\
**Replies:** 0\
**Last updated:** [October 11, 2024, 5:08am UTC](https://discourse.julialang.org/t/staff-senior-software-engineer-space-mission-planning/121178 "2024-10-11T05:08:12Z")

</div>

There are two job postings for Staff and Senior Software Engineer, (Space) Mission Planning. The company is BlackSky, which IPOed in 2021. The job listings call for (among other things): “working knowledge” of Go or Py…

---

## [Comparing mutable structs with identical field values in Julia](https://discourse.julialang.org/t/comparing-mutable-structs-with-identical-field-values-in-julia/116586)

<div class="topic-metadata">

**Author:** [@baiango](https://discourse.julialang.org/u/baiango)\
**Replies:** 5\
**Last updated:** [July 3, 2024, 3:03pm UTC](https://discourse.julialang.org/t/comparing-mutable-structs-with-identical-field-values-in-julia/116586 "2024-07-03T15:03:26Z")

</div>

Description I am working on a project that involves comparing mutable structs with identical field values in Julia. However, I am encountering unexpected results when using the == and === operators, as they return false …

---

## [Optimization with integrals in both objective and the constraint](https://discourse.julialang.org/t/optimization-with-integrals-in-both-objective-and-the-constraint/113838)

<div class="topic-metadata">

**Author:** [@Ayesha](https://discourse.julialang.org/u/Ayesha)\
**Replies:** 9\
**Last updated:** [May 9, 2024, 11:54pm UTC](https://discourse.julialang.org/t/optimization-with-integrals-in-both-objective-and-the-constraint/113838 "2024-05-09T23:54:36Z")

</div>

I’m trying to optimize a function that has an integral in the objective. While I can perform unconstrained optimization, I’m unsure how to use the Julia optimizer. I am trying to do this to add a constraint later, which …

---

## [Resize widgets in gtk.jl](https://discourse.julialang.org/t/resize-widgets-in-gtk-jl/113346)

<div class="topic-metadata">

**Author:** [@Votline](https://discourse.julialang.org/u/Votline)\
**Replies:** 0\
**Last updated:** [April 22, 2024, 3:54pm UTC](https://discourse.julialang.org/t/resize-widgets-in-gtk-jl/113346 "2024-04-22T15:54:36Z")

</div>

How can I change the size of the widget or set a fixed value for the window (so that it is not stretched by widgets)? (resize!(win, x, y) does not set a fixed value))

---

## [\[New Publication\] LymphoDose](https://discourse.julialang.org/t/new-publication-lymphodose/113058)

<div class="topic-metadata">

**Author:** [@fdekerme](https://discourse.julialang.org/u/fdekerme)\
**Replies:** 1\
**Last updated:** [April 17, 2024, 1:59pm UTC](https://discourse.julialang.org/t/new-publication-lymphodose/113058 "2024-04-17T13:59:35Z")

</div>

Hello everyone :smiley:, I am pleased to announce the recent publication of LymphoDose: a lymphocyte dose estimation framework - application to brain radiotherapy, entirely developed in Julia (and the plot with Makie.jl)…

---

## [2024 Julia User & Developer Survey - Draft Open for Comment Until Friday March 29](https://discourse.julialang.org/t/2024-julia-user-developer-survey-draft-open-for-comment-until-friday-march-29/111517)

<div class="topic-metadata">

**Author:** [@ahclaster](https://discourse.julialang.org/u/ahclaster)\
**Replies:** 1\
**Last updated:** [March 12, 2024, 4:51pm UTC](https://discourse.julialang.org/t/2024-julia-user-developer-survey-draft-open-for-comment-until-friday-march-29/111517 "2024-03-12T16:51:14Z")

</div>

The 2024 Julia User & Developer Survey Draft is open for comments. Please click here to provide comments: 2024 Julia User & Developer Survey - English - Google Docs. Please provide comments no later than Friday March 29.…

---

## [Julia-repl VScode extension on HPC](https://discourse.julialang.org/t/julia-repl-vscode-extension-on-hpc/110898)

<div class="topic-metadata">

**Author:** [@SingingKim](https://discourse.julialang.org/u/SingingKim)\
**Replies:** 3\
**Last updated:** [February 28, 2024, 4:22pm UTC](https://discourse.julialang.org/t/julia-repl-vscode-extension-on-hpc/110898 "2024-02-28T16:22:57Z")

</div>

I’m working on a HPC with a master node and calculation nodes. Q. Is there a way to start Julia-repl on VScode at a non-master node of HPC? If I type shift+enter on test.jl file with VScode editor, it starts a julia-re…

---

## [\[GMT.jl\] Text Encoding issue (UTF8)](https://discourse.julialang.org/t/gmt-jl-text-encoding-issue-utf8/110735)

<div class="topic-metadata">

**Author:** [@SingingKim](https://discourse.julialang.org/u/SingingKim)\
**Replies:** 2\
**Last updated:** [February 25, 2024, 1:28pm UTC](https://discourse.julialang.org/t/gmt-jl-text-encoding-issue-utf8/110735 "2024-02-25T13:28:59Z")

</div>

I’m new to GMT.jl and I am struggling with text function. using GMT text("대한민국", fmt="pdf", x=12, y=15, font=12, show=true) Give the following result: Can anyone help me with this issue? Thanks!

---

## [Some Fine YouTube Creators Teaching Julia](https://discourse.julialang.org/t/some-fine-youtube-creators-teaching-julia/108357)

<div class="topic-metadata">

**Author:** [@benslinux](https://discourse.julialang.org/u/benslinux)\
**Replies:** 2\
**Last updated:** [January 5, 2024, 7:38pm UTC](https://discourse.julialang.org/t/some-fine-youtube-creators-teaching-julia/108357 "2024-01-05T19:38:21Z")

</div>

I’m relatively new to this forum, but I’ve already learned a great deal from those who have taken the time to answer my questions. I’ve also learned from those outside the immediate community here. I’d like to draw atten…

---

## [How to determine if a point given is within a line (two points)](https://discourse.julialang.org/t/how-to-determine-if-a-point-given-is-within-a-line-two-points/105896)

<div class="topic-metadata">

**Author:** [@Chamika\_Kasun](https://discourse.julialang.org/u/Chamika_Kasun)\
**Replies:** 12\
**Last updated:** [November 8, 2023, 5:41pm UTC](https://discourse.julialang.org/t/how-to-determine-if-a-point-given-is-within-a-line-two-points/105896 "2023-11-08T17:41:27Z")

</div>

I have got a line with two points and a single point. I need to check whether the single point is between the line (i.e. between the two points) given, including the two points given. How do I do that using Julia. …

---

## [How to create a single shared parameter for multiple gates within a circuit directly using Yao.jl?](https://discourse.julialang.org/t/how-to-create-a-single-shared-parameter-for-multiple-gates-within-a-circuit-directly-using-yao-jl/104648)

<div class="topic-metadata">

**Author:** [@nethaji8](https://discourse.julialang.org/u/nethaji8)\
**Replies:** 3\
**Last updated:** [October 7, 2023, 5:10am UTC](https://discourse.julialang.org/t/how-to-create-a-single-shared-parameter-for-multiple-gates-within-a-circuit-directly-using-yao-jl/104648 "2023-10-07T05:10:32Z")

</div>

I am trying to parameterize a circuit using a single variable θ in the code below but the output is: Number of parameters in the circuit: 4 . Can someone please help me create a single shared parameter for multiple g…

---

## [One Does Not Simply Walk Into Mordor: Julia, the last language?](https://discourse.julialang.org/t/one-does-not-simply-walk-into-mordor-julia-the-last-language/104544)

<div class="topic-metadata">

**Author:** [@algunion](https://discourse.julialang.org/u/algunion)\
**Replies:** 4\
**Last updated:** [October 5, 2023, 12:46am UTC](https://discourse.julialang.org/t/one-does-not-simply-walk-into-mordor-julia-the-last-language/104544 "2023-10-05T00:46:12Z")

</div>

Just wanted to let you all know that one does not simply give up Julia. I attempted to do this without being able to evaluate in advance how hooked my brain became on multiple dispatch. With some effort, I can compensat…

---

## [How to disable precompile statements while building Julia?](https://discourse.julialang.org/t/how-to-disable-precompile-statements-while-building-julia/103461)

<div class="topic-metadata">

**Author:** [@jishnub](https://discourse.julialang.org/u/jishnub)\
**Replies:** 2\
**Last updated:** [September 2, 2023, 12:15pm UTC](https://discourse.julialang.org/t/how-to-disable-precompile-statements-while-building-julia/103461 "2023-09-02T12:15:24Z")

</div>

I have added a Make.user with the content $ cat Make.user JULIA\_PRECOMPILE ?= 0 but when I build Julia (using make), I find Collecting and executing precompile statements └ Collect (Basic: ✓ 871, REPL 39/39: ✓ 1862) =\>…

---

## [Julia equivalent of R's quantile function](https://discourse.julialang.org/t/julia-equivalent-of-rs-quantile-function/102584)

<div class="topic-metadata">

**Author:** [@Sandy45](https://discourse.julialang.org/u/Sandy45)\
**Replies:** 7\
**Last updated:** [August 10, 2023, 5:25am UTC](https://discourse.julialang.org/t/julia-equivalent-of-rs-quantile-function/102584 "2023-08-10T05:25:49Z")

</div>

I am trying to convert R code to Julia and need help on below logic conversion. Currently in R they are trying to process each row in percentile\_to df using for loop by passing arguments to function func\_get\_percentile\_…

---

## [Store dataframes in structure and storing multiple database connection in connection pool](https://discourse.julialang.org/t/store-dataframes-in-structure-and-storing-multiple-database-connection-in-connection-pool/102467)

<div class="topic-metadata">

**Author:** [@Sandy45](https://discourse.julialang.org/u/Sandy45)\
**Replies:** 3\
**Last updated:** [August 4, 2023, 2:14pm UTC](https://discourse.julialang.org/t/store-dataframes-in-structure-and-storing-multiple-database-connection-in-connection-pool/102467 "2023-08-04T14:14:19Z")

</div>

Q1 - I am working with multiple dataframes and trying to create structure with dataframes in it so that they can be accessed easily. I’ve created struct like below and when I try to assign the data to it I got an error “…

---

## [Trying to translate Matlab code to Julia - need help #50640](https://discourse.julialang.org/t/trying-to-translate-matlab-code-to-julia-need-help-50640/102111)

<div class="topic-metadata">

**Author:** [@manuelcaeiro](https://discourse.julialang.org/u/manuelcaeiro)\
**Replies:** 14\
**Last updated:** [July 27, 2023, 6:26pm UTC](https://discourse.julialang.org/t/trying-to-translate-matlab-code-to-julia-need-help-50640/102111 "2023-07-27T18:26:38Z")

</div>

I’m trying to translate the following code in Matlab: e = 1.05; %Eccentricity a = -147562.72; %km b = abs(a)\*sqrt(e.^2 -1); %Equation for Semi-Minor Axis, b x1 = linspace( a, 2\*a, 1E3); %…

---

## [Preferred Kernel in jupyter notebook](https://discourse.julialang.org/t/preferred-kernel-in-jupyter-notebook/102138)

<div class="topic-metadata">

**Author:** [@Ethan\_Tran](https://discourse.julialang.org/u/Ethan_Tran)\
**Replies:** 5\
**Last updated:** [July 27, 2023, 4:20pm UTC](https://discourse.julialang.org/t/preferred-kernel-in-jupyter-notebook/102138 "2023-07-27T16:20:18Z")

</div>

I have used three different versions of Julia on my PC (1.8.5, 1.9.0, and 1.9.2). For all versions, I’ve already installed the IJulia package or using Pkg and Pkg.build("IJulia"). However, when I use the jupyter notebook…

---

## [What causes the Distributed.ProcessExitedException(3) error in Julia and how can I resolve it in my Pluto notebook?](https://discourse.julialang.org/t/what-causes-the-distributed-processexitedexception-3-error-in-julia-and-how-can-i-resolve-it-in-my-pluto-notebook/97790)

<div class="topic-metadata">

**Author:** [@kondjenim](https://discourse.julialang.org/u/kondjenim)\
**Replies:** 4\
**Last updated:** [April 27, 2023, 4:02pm UTC](https://discourse.julialang.org/t/what-causes-the-distributed-processexitedexception-3-error-in-julia-and-how-can-i-resolve-it-in-my-pluto-notebook/97790 "2023-04-27T16:02:26Z")

</div>

I am encountering the Distributed.ProcessExitedException(3) error in my Julia Pluto notebook. I am not sure what is causing this error or how to resolve it. I have tried updating Julia and the Pluto package, as well as r…

[Next page](https://discourse.julialang.org/tag/julia/1321.md?match_all_tags=true&page=1&tags%5B%5D=julia)