# Latest

**URL:** https://discourse.julialang.org/latest.md?page=6

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

**Page:** 7

---

## [\[ANN\] RationalFunctionApproximation.jl, v0.2](https://discourse.julialang.org/t/ann-rationalfunctionapproximation-jl-v0-2/129078)

<div class="topic-metadata">

**Author:** [@tobydriscoll](https://discourse.julialang.org/u/tobydriscoll)\
**Replies:** 4\
**Last updated:** [September 4, 2026, 12:39pm UTC](https://discourse.julialang.org/t/ann-rationalfunctionapproximation-jl-v0-2/129078 "2026-09-04T12:39:06Z")

</div>

I am pleased to announce a new version of RationalFunctionApproximation.jl, a package for the automatic approximation of functions by ratios of polynomials. Unlike polynomials, rational function interpolants can use arb…

---

## [API design help: Wrapping ITensorMPS structs and extending it to my package](https://discourse.julialang.org/t/api-design-help-wrapping-itensormps-structs-and-extending-it-to-my-package/139164)

<div class="topic-metadata">

**Author:** [@Gautameshwar](https://discourse.julialang.org/u/Gautameshwar)\
**Replies:** 2\
**Last updated:** [September 4, 2026, 2:36am UTC](https://discourse.julialang.org/t/api-design-help-wrapping-itensormps-structs-and-extending-it-to-my-package/139164 "2026-09-04T02:36:12Z")

</div>

Hi Julia community! I am currently developing a package, ProcessTensors.jl, that uses an MPS/MPO architecture to construct process tensors and simulate non-Markovian quantum dynamics. I built this package on top of the …

---

## [\[ANN\] PackageCompatUI v1.1](https://discourse.julialang.org/t/ann-packagecompatui-v1-1/139193)

<div class="topic-metadata">

**Author:** [@GunnarFarneback](https://discourse.julialang.org/u/GunnarFarneback)\
**Replies:** 0\
**Last updated:** [September 3, 2026, 6:41pm UTC](https://discourse.julialang.org/t/ann-packagecompatui-v1-1/139193 "2026-09-03T18:41:41Z")

</div>

PackageCompatUI is a terminal text interface to the \[compat\] section of a Julia Project.toml file. You can find more about how it works in the original announcement. The new version 1.1 does not change much about it, ex…

---

## [Pipeline question](https://discourse.julialang.org/t/pipeline-question/139130)

<div class="topic-metadata">

**Author:** [@mahmah](https://discourse.julialang.org/u/mahmah)\
**Replies:** 10\
**Last updated:** [September 3, 2026, 6:12pm UTC](https://discourse.julialang.org/t/pipeline-question/139130 "2026-09-03T18:12:12Z")

</div>

Continuing the discussion from Structure and performance questions from a Fortran programmer: functions, global variables, array allocations, input files, and structs: Is this how you move stuff from place to place in e…

---

## [\[ANN\] JuliaLibWrapping.jl: bringing Julia libraries to C and Python users](https://discourse.julialang.org/t/ann-julialibwrapping-jl-bringing-julia-libraries-to-c-and-python-users/139150)

<div class="topic-metadata">

**Author:** [@tim.holy](https://discourse.julialang.org/u/tim.holy)\
**Replies:** 15\
**Last updated:** [September 3, 2026, 12:36pm UTC](https://discourse.julialang.org/t/ann-julialibwrapping-jl-bringing-julia-libraries-to-c-and-python-users/139150 "2026-09-03T12:36:21Z")

</div>

I’m pleased to formally announce JuliaLibWrapping.jl (JLW), a tool for turning Julia packages into shared libraries with C and Python interfaces. This project has been a close collaboration with @Jorge\_Vieyra, with impor…

---

## [\[ANN\] PrettyTables.jl v3.5: One Table Specification, Six Back Ends](https://discourse.julialang.org/t/ann-prettytables-jl-v3-5-one-table-specification-six-back-ends/139129)

<div class="topic-metadata">

**Author:** [@Ronis\_BR](https://discourse.julialang.org/u/Ronis_BR)\
**Replies:** 11\
**Last updated:** [September 3, 2026, 11:13am UTC](https://discourse.julialang.org/t/ann-prettytables-jl-v3-5-one-table-specification-six-back-ends/139129 "2026-09-03T11:13:29Z")

</div>

PrettyTables.jl v3.5 adds backend-agnostic table formats and styles. Until now, making a table beautiful meant configuring backend-specific objects (TextTableFormat, LatexTableStyle, and so on), so switching back ends r…

---

## [Starting guide for Julia, coming from e.g. Python or C++](https://discourse.julialang.org/t/starting-guide-for-julia-coming-from-e-g-python-or-c/139139)

<div class="topic-metadata">

**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 5\
**Last updated:** [September 3, 2026, 10:42am UTC](https://discourse.julialang.org/t/starting-guide-for-julia-coming-from-e-g-python-or-c/139139 "2026-09-03T10:42:15Z")

</div>

AI answers are often unbelievably good, and I believe also for this topic: ChatGPT - Julia Dict Comparisons 21. A particularly important Python → Julia mapping I’m not new to Julia actually, I just though there should…

---

## [Running out of RAM with repeated cholesky solves](https://discourse.julialang.org/t/running-out-of-ram-with-repeated-cholesky-solves/136044)

<div class="topic-metadata">

**Author:** [@falconflier](https://discourse.julialang.org/u/falconflier)\
**Replies:** 16\
**Last updated:** [September 3, 2026, 8:58am UTC](https://discourse.julialang.org/t/running-out-of-ram-with-repeated-cholesky-solves/136044 "2026-09-03T08:58:43Z")

</div>

Hello, I have a system in which I need to repeatedly solve an electrostatics problem with an evolving charge configuration. When I left my program running overnight, I came back to find that RAM utilization had accumula…

---

## [\[ANN\] CodeGlass – see what your code is actually doing](https://discourse.julialang.org/t/ann-codeglass-see-what-your-code-is-actually-doing/137020)

<div class="topic-metadata">

**Author:** [@Tyrone](https://discourse.julialang.org/u/Tyrone)\
**Replies:** 17\
**Last updated:** [September 3, 2026, 8:07am UTC](https://discourse.julialang.org/t/ann-codeglass-see-what-your-code-is-actually-doing/137020 "2026-09-03T08:07:02Z")

</div>

Hi all, Over the past few years, we’ve been building runtime analysis tools for different languages and use cases, including Julia. Today, we would like to officially announce the release of our Julia profiling toolbox:…

---

## [Julia v1.13.0-rc4 is now available](https://discourse.julialang.org/t/julia-v1-13-0-rc4-is-now-available/139181)

<div class="topic-metadata">

**Author:** [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Replies:** 0\
**Last updated:** [September 3, 2026, 7:08am UTC](https://discourse.julialang.org/t/julia-v1-13-0-rc4-is-now-available/139181 "2026-09-03T07:08:17Z")

</div>

Julia version 1.13.0-rc4, the fourth release candidate for v1.13.0, is now available. Check out the NEWS.md file to see what will be new in 1.13. Binaries are available via JuliaUp and for manual download in the upcoming…

---

## [RFC: Proposal for estimating unique Julia clients without tracking](https://discourse.julialang.org/t/rfc-proposal-for-estimating-unique-julia-clients-without-tracking/138027)

<div class="topic-metadata">

**Author:** [@StefanKarpinski](https://discourse.julialang.org/u/StefanKarpinski)\
**Replies:** 68\
**Last updated:** [September 3, 2026, 3:26am UTC](https://discourse.julialang.org/t/rfc-proposal-for-estimating-unique-julia-clients-without-tracking/138027 "2026-09-03T03:26:28Z")

</div>

I’ve written up a new protocol that would allow us to estimate how many unique Pkg clients there are for Julia and for each package in a way that doesn’t allow for tracking individual users. This works as a rough proxy f…

---

## [EnzymeCon3 Planning Survey](https://discourse.julialang.org/t/enzymecon3-planning-survey/139173)

<div class="topic-metadata">

**Author:** [@wsmoses](https://discourse.julialang.org/u/wsmoses)\
**Replies:** 0\
**Last updated:** [September 2, 2026, 8:00pm UTC](https://discourse.julialang.org/t/enzymecon3-planning-survey/139173 "2026-09-02T20:00:21Z")

</div>

Hey folks, we’re in the process of planning EnzymeCon3. If you’re potentially interested in the event (or have ideas/feedback you’d like to share), please fill out this survey. All work related to the greater Enzyme c…

---

## [Split matrix calculation, and FYI: Effectiveness of sparse data structure for double-double and quad-double arithmetics](https://discourse.julialang.org/t/split-matrix-calculation-and-fyi-e-ectiveness-of-sparse-data-structure-for-double-double-and-quad-double-arithmetics/139172)

<div class="topic-metadata">

**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 0\
**Last updated:** [September 2, 2026, 7:47pm UTC](https://discourse.julialang.org/t/split-matrix-calculation-and-fyi-e-ectiveness-of-sparse-data-structure-for-double-double-and-quad-double-arithmetics/139172 "2026-09-02T19:47:58Z")

</div>

I got this idea for splitting numbers (but actually only for matrices), like Float64, into two parts, hi and lo (basically the double-double trick), for up to 2x speedup if lo can be Float32, since hi can be in a separat…

---

## [Looking for job or consultancy](https://discourse.julialang.org/t/looking-for-job-or-consultancy/139169)

<div class="topic-metadata">

**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 0\
**Last updated:** [September 2, 2026, 5:35pm UTC](https://discourse.julialang.org/t/looking-for-job-or-consultancy/139169 "2026-09-02T17:35:43Z")

</div>

Dear Community, My postdoc in physics-informed learning control of wind energy systems at TU Delft, ends at the end of September. Therefore, I am seeking a job in the field of modeling and control, preferably in Julia. …

---

## [Combine(groupby())](https://discourse.julialang.org/t/combine-groupby/139142)

<div class="topic-metadata">

**Author:** [@mahmah](https://discourse.julialang.org/u/mahmah)\
**Replies:** 8\
**Last updated:** [September 2, 2026, 2:32pm UTC](https://discourse.julialang.org/t/combine-groupby/139142 "2026-09-02T14:32:35Z")

</div>

Is there a way to do this: c = combine(groupby(df, :A),:B =\> mean =\> :B\_mean) but in such a way that the output does not only show :A and :B\_mean but also the other variables that df had (well, at least the variables t…

---

## [Error in the keymap: bug in Debugger](https://discourse.julialang.org/t/error-in-the-keymap-bug-in-debugger/139131)

<div class="topic-metadata">

**Author:** [@phma](https://discourse.julialang.org/u/phma)\
**Replies:** 5\
**Last updated:** [September 2, 2026, 8:40am UTC](https://discourse.julialang.org/t/error-in-the-keymap-bug-in-debugger/139131 "2026-09-02T08:40:20Z")

</div>

I just updated Julia on puma to 1.12.7, after updating kodkod to 1.12.7 with no problem. I then did instantiate, update, and resolve until it appeared to load a script without problem. I then ran cvtdeg("foo") (one of th…

---

## [Post-doc position at the GHER, ULiège, Belgium](https://discourse.julialang.org/t/post-doc-position-at-the-gher-uliege-belgium/139159)

<div class="topic-metadata">

**Author:** [@Alexander-Barth](https://discourse.julialang.org/u/Alexander-Barth)\
**Replies:** 0\
**Last updated:** [September 2, 2026, 8:38am UTC](https://discourse.julialang.org/t/post-doc-position-at-the-gher-uliege-belgium/139159 "2026-09-02T08:38:24Z")

</div>

We invite applications for a project scientist (post-doc) position at the GeoHydrodynamics and Environment Research group (GHER, https://www.gher.uliege.be) of the University of Liège in Belgium. The candidate will work …

---

## [HDF5.jl with vector of tuples of strings](https://discourse.julialang.org/t/hdf5-jl-with-vector-of-tuples-of-strings/139148)

<div class="topic-metadata">

**Author:** [@BambOoxX](https://discourse.julialang.org/u/BambOoxX)\
**Replies:** 4\
**Last updated:** [September 2, 2026, 7:25am UTC](https://discourse.julialang.org/t/hdf5-jl-with-vector-of-tuples-of-strings/139148 "2026-09-02T07:25:32Z")

</div>

@mkitti I just stumbled on another similar string related issue. If one tries to write a Vector{@NamedTuple...} where at least one type is a string, the writing fails. This is on v0.17.3. using HDF5 arr = \[ (;A…

---

## [NUTS algorithm in Turing.jl](https://discourse.julialang.org/t/nuts-algorithm-in-turing-jl/135592)

<div class="topic-metadata">

**Author:** [@Sahil\_Khan](https://discourse.julialang.org/u/Sahil_Khan)\
**Replies:** 7\
**Last updated:** [September 2, 2026, 3:52am UTC](https://discourse.julialang.org/t/nuts-algorithm-in-turing-jl/135592 "2026-09-02T03:52:43Z")

</div>

Dear all, Can someone explain to me that the n\_adapts in case NUTS algorithm NUTS(n\_adapts, δ) used in Turing sample function is number of iteration or number of accepted samples before main sampling? Because when I giv…

---

## [Julia 1.12.7 osx-64 builds now available on conda-forge](https://discourse.julialang.org/t/julia-1-12-7-osx-64-builds-now-available-on-conda-forge/139153)

<div class="topic-metadata">

**Author:** [@mkitti](https://discourse.julialang.org/u/mkitti)\
**Replies:** 0\
**Last updated:** [September 2, 2026, 3:47am UTC](https://discourse.julialang.org/t/julia-1-12-7-osx-64-builds-now-available-on-conda-forge/139153 "2026-09-02T03:47:31Z")

</div>

The conda-forge osx-64 Julia builds stopped working around the beginning of 2026 with the last build being Julia 1.12.2 on December 12th, 2025. The conda-forge builds are (mostly) built from source. I was able to resolv…

---

## [\[ANN\] EmissionModels.jl: emission models for HiddenMarkovModels.jl](https://discourse.julialang.org/t/ann-emissionmodels-jl-emission-models-for-hiddenmarkovmodels-jl/138877)

<div class="topic-metadata">

**Author:** [@rsenne](https://discourse.julialang.org/u/rsenne)\
**Replies:** 1\
**Last updated:** [September 2, 2026, 3:45am UTC](https://discourse.julialang.org/t/ann-emissionmodels-jl-emission-models-for-hiddenmarkovmodels-jl/138877 "2026-09-02T03:45:03Z")

</div>

I’m happy to announce the first registered release of EmissionModels.jl! HiddenMarkovModels.jl is deliberately agnostic about the observation model: anything implementing rand, logdensityof, and fit! can serve as an emi…

---

## [How are CPU/core resources utilized with multiple multithreaded processes?](https://discourse.julialang.org/t/how-are-cpu-core-resources-utilized-with-multiple-multithreaded-processes/139151)

<div class="topic-metadata">

**Author:** [@stustd](https://discourse.julialang.org/u/stustd)\
**Replies:** 1\
**Last updated:** [August 25, 2026, 12:43am UTC](https://discourse.julialang.org/t/how-are-cpu-core-resources-utilized-with-multiple-multithreaded-processes/139151 "2026-08-25T00:43:25Z")

</div>

How are CPU/core resources utilized in a software model with multiple processes (i.e. data separation), with each process having multiple threads (i.e. data sharing): will the sum of tasks (aggregated over the processes)…

---

## [HDF5.jl variable length string](https://discourse.julialang.org/t/hdf5-jl-variable-length-string/98808)

<div class="topic-metadata">

**Author:** [@thomaskroi1996](https://discourse.julialang.org/u/thomaskroi1996)\
**Replies:** 10\
**Last updated:** [April 4, 2024, 10:38pm UTC](https://discourse.julialang.org/t/hdf5-jl-variable-length-string/98808 "2024-04-04T22:38:46Z")

</div>

Hello everyone! I am currently trying to translate i python code to julia! What i am trying to do, broken down, is creating a dataset where dtype=“String”. I know that to do that in python you have to declare a special …

---

## [TestItems: debugger crashes in vscode](https://discourse.julialang.org/t/testitems-debugger-crashes-in-vscode/139126)

<div class="topic-metadata">

**Author:** [@stustd](https://discourse.julialang.org/u/stustd)\
**Replies:** 3\
**Last updated:** [September 1, 2026, 8:28pm UTC](https://discourse.julialang.org/t/testitems-debugger-crashes-in-vscode/139126 "2026-09-01T20:28:43Z")

</div>

I start the debugger on a @testitem that runs perfectly fine without debugger. Putting in a breakpoint (at some line in the @testset) and then trying to debug causes the debugger to crash: \[ Info: Julia test item proces…

---

## [Two Microsimulation Models in Julia](https://discourse.julialang.org/t/two-microsimulation-models-in-julia/139140)

<div class="topic-metadata">

**Author:** [@grahamstark](https://discourse.julialang.org/u/grahamstark)\
**Replies:** 0\
**Last updated:** [September 1, 2026, 3:07pm UTC](https://discourse.julialang.org/t/two-microsimulation-models-in-julia/139140 "2026-09-01T15:07:59Z")

</div>

If you’re interested in public policy or economics, you might be interested in some Julia microsimulations I’ve been working on: https://sims.virtual-worlds.scot:8444/scotben-2026/ https://sims.virtual-worlds.scot:8444…

---

## [Manually update operator in a SplitODEProblem](https://discourse.julialang.org/t/manually-update-operator-in-a-splitodeproblem/139138)

<div class="topic-metadata">

**Author:** [@homocarbonis](https://discourse.julialang.org/u/homocarbonis)\
**Replies:** 1\
**Last updated:** [September 1, 2026, 3:00pm UTC](https://discourse.julialang.org/t/manually-update-operator-in-a-splitodeproblem/139138 "2026-09-01T15:00:46Z")

</div>

Hello, I have some library code which constructs a SplitODEProblem with a DiagonalOperator as f1, and I’m trying to write a function to remake the problem with problem.f.f1.A updated according to new parameter values. I…

---

## [Auto-convert Vector{Type} to special container type](https://discourse.julialang.org/t/auto-convert-vector-type-to-special-container-type/139045)

<div class="topic-metadata">

**Author:** [@pekuntzpuglia](https://discourse.julialang.org/u/pekuntzpuglia)\
**Replies:** 6\
**Last updated:** [September 1, 2026, 12:36pm UTC](https://discourse.julialang.org/t/auto-convert-vector-type-to-special-container-type/139045 "2026-09-01T12:36:07Z")

</div>

I’m trying to use this unofficial CasADi interface in Julia since the official interface seems to be a long way from working (couldn’t get it installed in Julia 1.10, as stated in Project.toml). I’m having a hard time ha…

---

## [Optimization convergence requirements](https://discourse.julialang.org/t/optimization-convergence-requirements/139122)

<div class="topic-metadata">

**Author:** [@dgagnon](https://discourse.julialang.org/u/dgagnon)\
**Replies:** 5\
**Last updated:** [September 1, 2026, 10:23am UTC](https://discourse.julialang.org/t/optimization-convergence-requirements/139122 "2026-09-01T10:23:47Z")

</div>

Hello I have a function from \[0,1\] to \[0,1\], which I can shown to always have a unique maximum. I have been using Optim.jl with the default Brent’s method to compute it. I am a statistician, not a specialist on numeric…

---

## [Sparse vector in imfilter kernel](https://discourse.julialang.org/t/sparse-vector-in-imfilter-kernel/139133)

<div class="topic-metadata">

**Author:** [@xor0110](https://discourse.julialang.org/u/xor0110)\
**Replies:** 0\
**Last updated:** [September 1, 2026, 7:00am UTC](https://discourse.julialang.org/t/sparse-vector-in-imfilter-kernel/139133 "2026-09-01T07:00:33Z")

</div>

What would it take to make ImageFiltering.imfilter work with sparse or “dilated” kernels? I know it supports OffsetArrays, for instance. We basically need to skip every few values so a filter like \[-1,0,0,0,1\] only perfo…

---

## [Excel files & Julia?](https://discourse.julialang.org/t/excel-files-julia/91253)

<div class="topic-metadata">

**Author:** [@BLI](https://discourse.julialang.org/u/BLI)\
**Replies:** 6\
**Last updated:** [September 1, 2026, 6:14am UTC](https://discourse.julialang.org/t/excel-files-julia/91253 "2026-09-01T06:14:51Z")

</div>

It’s exam time, and I need to script the reading of content from a number of Excel files, put the information into a DataFrame, compute grades, and write the result to an Excel file. Last time I did this, I used package…

[Previous page](https://discourse.julialang.org/latest.md?page=5)

[Next page](https://discourse.julialang.org/latest.md?page=7)