# Latest

**URL:** https://discourse.julialang.org/latest.md?page=237

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

**Page:** 238

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## [HomotopyContinuation: Duffing Revisited: Plotting Solution from Multiple Paths](https://discourse.julialang.org/t/homotopycontinuation-duffing-revisited-plotting-solution-from-multiple-paths/124735)

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**Author:** [@Domenico\_Lahaye](https://discourse.julialang.org/u/Domenico_Lahaye)\
**Replies:** 3\
**Last updated:** [January 15, 2025, 5:03pm UTC](https://discourse.julialang.org/t/homotopycontinuation-duffing-revisited-plotting-solution-from-multiple-paths/124735 "2025-01-15T17:03:16Z")

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I am seeking to plot the solutions that HomotopyContinuation.jl returns in case of multiple solution branches. Same question reformulated: I am seeking to reproduce BifurcationKit: Duffing Equation: Time-Harmonic: Singl…

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## [Dark mode toggle for Pluto?](https://discourse.julialang.org/t/dark-mode-toggle-for-pluto/75305)

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**Author:** [@Jon\_Norberg](https://discourse.julialang.org/u/Jon_Norberg)\
**Replies:** 5\
**Last updated:** [January 15, 2025, 4:47pm UTC](https://discourse.julialang.org/t/dark-mode-toggle-for-pluto/75305 "2025-01-15T16:47:58Z")

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So Pluto suddenly turned dark-mode. Its pretty! But how do I toggle between light and dark?

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## [\`prod\` over empty collection with known eltype gives "reducing over empty collection ..."](https://discourse.julialang.org/t/prod-over-empty-collection-with-known-eltype-gives-reducing-over-empty-collection/124790)

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**Author:** [@jlbosse](https://discourse.julialang.org/u/jlbosse)\
**Replies:** 5\
**Last updated:** [January 15, 2025, 4:29pm UTC](https://discourse.julialang.org/t/prod-over-empty-collection-with-known-eltype-gives-reducing-over-empty-collection/124790 "2025-01-15T16:29:33Z")

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I have the following code which I expected to return 1., but instead get “reducing over empty collection is not allowed error”: julia\> f(xs) = prod(a for (a, b) in xs) julia\> f(Tuple{Float64, Float64}\[\]) ERROR: Argumen…

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## [Julia v1.11.3 testing period](https://discourse.julialang.org/t/julia-v1-11-3-testing-period/124787)

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**Author:** [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)\
**Replies:** 0\
**Last updated:** [January 15, 2025, 1:05pm UTC](https://discourse.julialang.org/t/julia-v1-11-3-testing-period/124787 "2025-01-15T13:05:45Z")

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The release-1.11 branch on the Julia repository now contains the set of commits we’re planning to tag as v1.11.3. The list of commits included since v1.11.2 is available here . As a patch release, it should be non-breaki…

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## [\[jsonrpc\] Server exited with status 1](https://discourse.julialang.org/t/jsonrpc-server-exited-with-status-1/124766)

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**Author:** [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Replies:** 3\
**Last updated:** [January 15, 2025, 12:39pm UTC](https://discourse.julialang.org/t/jsonrpc-server-exited-with-status-1/124766 "2025-01-15T12:39:47Z")

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A couple of weeks ago I started getting restarts with eglot & Julia in Emacs. The \*Messages\* buffer tells me that \[eglot\] Connected! Server \`EGLOT (TrustRegionMethods/(julia-mode ess-julia-mode julia-ts-mode))' now mana…

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## [\[ANN\] PeriodicMatrixEquations.jl - Solvers for periodic differential and difference matrix equations](https://discourse.julialang.org/t/ann-periodicmatrixequations-jl-solvers-for-periodic-differential-and-difference-matrix-equations/124739)

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**Author:** [@andreasvarga](https://discourse.julialang.org/u/andreasvarga)\
**Replies:** 0\
**Last updated:** [January 13, 2025, 7:53pm UTC](https://discourse.julialang.org/t/ann-periodicmatrixequations-jl-solvers-for-periodic-differential-and-difference-matrix-equations/124739 "2025-01-13T19:53:30Z")

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PeriodicMatrixEquations.jl provides a collection of solvers for several differential and difference periodic matrix equations, which are encountered in the analysis and synthesis of periodic control systems. This package…

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## [KNITRO.jl and Complementarity Constraints](https://discourse.julialang.org/t/knitro-jl-and-complementarity-constraints/124090)

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**Author:** [@daro.slai](https://discourse.julialang.org/u/daro.slai)\
**Replies:** 3\
**Last updated:** [January 15, 2025, 11:39am UTC](https://discourse.julialang.org/t/knitro-jl-and-complementarity-constraints/124090 "2025-01-15T11:39:50Z")

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Hi, I’m modeling a system with complementarity constraints.Namely, a flow S has a negative S^- and positive S^+ component: S=S^+ - S^- 0 \\leq S^+ 0 \\leq S^- and of course complementary to each other: S^+ \\perp S^…

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## [Unable to reproduce a simple bifurcation diagram](https://discourse.julialang.org/t/unable-to-reproduce-a-simple-bifurcation-diagram/124738)

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**Author:** [@vembha](https://discourse.julialang.org/u/vembha)\
**Replies:** 8\
**Last updated:** [January 15, 2025, 6:37am UTC](https://discourse.julialang.org/t/unable-to-reproduce-a-simple-bifurcation-diagram/124738 "2025-01-15T06:37:56Z")

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Hello, New to BifurcationKit.jl here! I have a simple ODE-based model from an article (Fig. 2A in https://www.pnas.org/doi/10.1073/pnas.1419162112), which is known to have three bifurcation points when varied over a par…

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## [\[pre-ANN\] SplineGrids.jl - Efficient evaluation of spline/NURBS geometries of any dimensionality](https://discourse.julialang.org/t/pre-ann-splinegrids-jl-efficient-evaluation-of-spline-nurbs-geometries-of-any-dimensionality/124459)

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**Author:** [@BdeKoning](https://discourse.julialang.org/u/BdeKoning)\
**Replies:** 3\
**Last updated:** [January 15, 2025, 5:41am UTC](https://discourse.julialang.org/t/pre-ann-splinegrids-jl-efficient-evaluation-of-spline-nurbs-geometries-of-any-dimensionality/124459 "2025-01-15T05:41:13Z")

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Hello everyone, I’d like to announce a package I’ve been working on as a passion project for the past few weeks: SplineGrids.jl: Repo: SouthEndMusic/SplineGrids.jl: Evaluating splines of arbitrary dimensionality on a …

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## [How slow is runtime dispatch, anyway? Benchmark attempts](https://discourse.julialang.org/t/how-slow-is-runtime-dispatch-anyway-benchmark-attempts/124751)

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**Author:** [@Benny](https://discourse.julialang.org/u/Benny)\
**Replies:** 8\
**Last updated:** [January 15, 2025, 1:19am UTC](https://discourse.julialang.org/t/how-slow-is-runtime-dispatch-anyway-benchmark-attempts/124751 "2025-01-15T01:19:09Z")

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It’s not actually easy to separate the timing of the runtime dispatches from the surrounding code, and I wasn’t much convinced by the few benchmarks people have tried, even if just counting the ones did control the numbe…

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## [Privacy and storage with file uploads using Genie/Stipple](https://discourse.julialang.org/t/privacy-and-storage-with-file-uploads-using-genie-stipple/124743)

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**Author:** [@TheHedgehog2000](https://discourse.julialang.org/u/TheHedgehog2000)\
**Replies:** 1\
**Last updated:** [January 15, 2025, 12:26am UTC](https://discourse.julialang.org/t/privacy-and-storage-with-file-uploads-using-genie-stipple/124743 "2025-01-15T00:26:43Z")

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Apologies if this is a trivial question, I am new to web development. I am following this link to a minimal app which allows a user to upload .csv files and analyze them: App with CSV uploader - Genie. In this app, all u…

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## [How to train a biobjective problem with SDDP.jl?](https://discourse.julialang.org/t/how-to-train-a-biobjective-problem-with-sddp-jl/123590)

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**Author:** [@z\_yt\_Yt](https://discourse.julialang.org/u/z_yt_Yt)\
**Replies:** 10\
**Last updated:** [January 14, 2025, 11:49pm UTC](https://discourse.julialang.org/t/how-to-train-a-biobjective-problem-with-sddp-jl/123590 "2025-01-14T23:49:08Z")

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Hello, I am trying to run this SDDP.jl/papers/biobjective\_sddp/BiObjectiveSDDP.jl at master · odow/SDDP.jl · GitHub and also other files in this folder SDDP.jl/papers/biobjective\_sddp at master · odow/SDDP.jl · GitHub. …

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## [Makie.jl Series Plot Color Cycling with Observable Legends](https://discourse.julialang.org/t/makie-jl-series-plot-color-cycling-with-observable-legends/114599)

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**Author:** [@matthew3245](https://discourse.julialang.org/u/matthew3245)\
**Replies:** 1\
**Last updated:** [January 14, 2025, 11:42pm UTC](https://discourse.julialang.org/t/makie-jl-series-plot-color-cycling-with-observable-legends/114599 "2025-01-14T23:42:54Z")

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My goal is to plot a series of data and have their legends be observable so I can change them later. This works already using series! using the labels keyword argument set to a vector of observables. However, when I add …

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## [Makie : Update plot legend through Observables](https://discourse.julialang.org/t/makie-update-plot-legend-through-observables/86786)

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**Author:** [@dgs](https://discourse.julialang.org/u/dgs)\
**Replies:** 11\
**Last updated:** [January 14, 2025, 11:32pm UTC](https://discourse.julialang.org/t/makie-update-plot-legend-through-observables/86786 "2025-01-14T23:32:13Z")

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Hello, I am trying to a basic app with GLMakie with some user input. The (scatter) plot nicely updates with a slider which basically selects which dots to plots but I can’t seem to find a way to update the legend (thro…

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## [Planing on building an ETL Framework](https://discourse.julialang.org/t/planing-on-building-an-etl-framework/124747)

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**Author:** [@th0rben](https://discourse.julialang.org/u/th0rben)\
**Replies:** 2\
**Last updated:** [January 14, 2025, 7:56pm UTC](https://discourse.julialang.org/t/planing-on-building-an-etl-framework/124747 "2025-01-14T19:56:27Z")

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I am planing to build a package for ETL processes as my Bachelor thesis. My plan is to to have the package be a simple way to build data pipelines following ETL. Having a simple way to load the data from different sourc…

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## [Help with reducing allocations when indexing into custom Array](https://discourse.julialang.org/t/help-with-reducing-allocations-when-indexing-into-custom-array/124732)

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**Author:** [@thomasc791](https://discourse.julialang.org/u/thomasc791)\
**Replies:** 10\
**Last updated:** [January 14, 2025, 10:21pm UTC](https://discourse.julialang.org/t/help-with-reducing-allocations-when-indexing-into-custom-array/124732 "2025-01-14T22:21:09Z")

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Hi everyone, I am quite new to the language, and was wondering if people could help me optimising my piece of code. The idea for this array type is to reduce the total Base.summarysize for a vector of vector as much as …

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## [Minimizing a nonlinear user function](https://discourse.julialang.org/t/minimizing-a-nonlinear-user-function/124772)

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**Author:** [@rocco\_sprmnt21](https://discourse.julialang.org/u/rocco_sprmnt21)\
**Replies:** 1\
**Last updated:** [January 14, 2025, 7:32pm UTC](https://discourse.julialang.org/t/minimizing-a-nonlinear-user-function/124772 "2025-01-14T19:32:25Z")

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I would like to know if and how the problem discussed Here can be solved using JuMP’s “powerfull means” This is the problem of day 24 of the advent of code 2024. You are asked to “fix” a 45-bit full-adder that has 4 p…

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## [Need a working example to use Gurobi for multi objective](https://discourse.julialang.org/t/need-a-working-example-to-use-gurobi-for-multi-objective/124760)

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**Author:** [@manoj.centura](https://discourse.julialang.org/u/manoj.centura)\
**Replies:** 2\
**Last updated:** [January 14, 2025, 7:29pm UTC](https://discourse.julialang.org/t/need-a-working-example-to-use-gurobi-for-multi-objective/124760 "2025-01-14T19:29:26Z")

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Hi Everyone, can some one provide working example for Gurobi Multi objective. Thanks in advance

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## [Advice speeding up a turing model](https://discourse.julialang.org/t/advice-speeding-up-a-turing-model/124741)

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**Author:** [@jacques1](https://discourse.julialang.org/u/jacques1)\
**Replies:** 7\
**Last updated:** [January 14, 2025, 7:20pm UTC](https://discourse.julialang.org/t/advice-speeding-up-a-turing-model/124741 "2025-01-14T19:20:49Z")

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I have a model in Turing which is exceptionally slow and am hoping for some help speeding it up. I am new to Turing so any pointers are helpful. My model is @model function many\_linreg(X, y; predictors=size(X, 2)) …

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## [Uncertainty propagation using MonteCarloMeasurements gives weird results](https://discourse.julialang.org/t/uncertainty-propagation-using-montecarlomeasurements-gives-weird-results/124745)

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**Author:** [@Iddingsite](https://discourse.julialang.org/u/Iddingsite)\
**Replies:** 8\
**Last updated:** [January 14, 2025, 6:39pm UTC](https://discourse.julialang.org/t/uncertainty-propagation-using-montecarlomeasurements-gives-weird-results/124745 "2025-01-14T18:39:47Z")

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Hi! I am not familiar with MonteCarloMeasurements.jl, so I am probably doing something dumb, but I thought that it would be the good tool for what I want to do and I am getting some weird results. I am trying to calcul…

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## [cudaMemcpyAsync: where is it used?](https://discourse.julialang.org/t/cudamemcpyasync-where-is-it-used/117967)

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**Author:** [@wsshin](https://discourse.julialang.org/u/wsshin)\
**Replies:** 17\
**Last updated:** [January 14, 2025, 6:21pm UTC](https://discourse.julialang.org/t/cudamemcpyasync-where-is-it-used/117967 "2025-01-14T18:21:17Z")

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I have a code written with CUDA.jl and I am trying to improve its performance. Upon CUDA.@profile, I learned that more than 60% of the host-side activity was spent on cudaMemcpyAsync: julia\> CUDA.@profile myfun(...) ..…

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## [Base.Fix2 can be constructed using broadcasting syntax but does not retain broadcasting functionality](https://discourse.julialang.org/t/base-fix2-can-be-constructed-using-broadcasting-syntax-but-does-not-retain-broadcasting-functionality/124770)

<div class="topic-metadata">

**Author:** [@croberts](https://discourse.julialang.org/u/croberts)\
**Replies:** 7\
**Last updated:** [January 14, 2025, 6:03pm UTC](https://discourse.julialang.org/t/base-fix2-can-be-constructed-using-broadcasting-syntax-but-does-not-retain-broadcasting-functionality/124770 "2025-01-14T18:03:46Z")

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Example: a = \[1,2,3\] (\>=(2)).(a) # works as intended .\>=(2) # can be constructed .\>=(2).f # fields do not retain information that function should be broadcasted (.\>=(2))(a) # breaks (x -\> x .\>= 2)(a) # intended beh…

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## [Parsing corporate DateTime format with calendar week](https://discourse.julialang.org/t/parsing-corporate-datetime-format-with-calendar-week/124725)

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**Author:** [@dobby](https://discourse.julialang.org/u/dobby)\
**Replies:** 5\
**Last updated:** [January 14, 2025, 5:45pm UTC](https://discourse.julialang.org/t/parsing-corporate-datetime-format-with-calendar-week/124725 "2025-01-14T17:45:40Z")

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Hi all, I have date time data in the following format: 2434.5 14:20 Which is for: year 2024, 34th week of the year (August), 5th day of the week (Friday), 14:20 o’clock. I am struggeling to parse the calendar week an…

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## [How can we save & extract Derivatives from the Solver in Julia?](https://discourse.julialang.org/t/how-can-we-save-extract-derivatives-from-the-solver-in-julia/124667)

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**Author:** [@Naceur\_Bouziani](https://discourse.julialang.org/u/Naceur_Bouziani)\
**Replies:** 3\
**Last updated:** [January 14, 2025, 5:19pm UTC](https://discourse.julialang.org/t/how-can-we-save-extract-derivatives-from-the-solver-in-julia/124667 "2025-01-14T17:19:29Z")

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Hello everybody and happy new year to all of you, I’m solving a PDE system using MethodeOfLines tool of Julia. The documentation guided me quite well. benefiting from ChrisRackauckas advise to speed up the non linearit…

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## [Error message 'extra tokens after end of expression'](https://discourse.julialang.org/t/error-message-extra-tokens-after-end-of-expression/124769)

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**Author:** [@Mar](https://discourse.julialang.org/u/Mar)\
**Replies:** 2\
**Last updated:** [January 14, 2025, 4:30pm UTC](https://discourse.julialang.org/t/error-message-extra-tokens-after-end-of-expression/124769 "2025-01-14T16:30:32Z")

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This may be a silly question, I’m totally new to Julia. I’m working in the terminal (on a Mac): julia\> VERSION v"1.11.2" This command ‘VERSION’ works fine, as well as some other commands. But I keep receiving the sa…

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## [What does \`pkg\> activate\` do?](https://discourse.julialang.org/t/what-does-pkg-activate-do/122122)

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**Author:** [@world-peace](https://discourse.julialang.org/u/world-peace)\
**Replies:** 7\
**Last updated:** [January 14, 2025, 4:00pm UTC](https://discourse.julialang.org/t/what-does-pkg-activate-do/122122 "2025-01-14T16:00:05Z")

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I think this is a relatively simple question, and I think I already know the answer but thought it might be worth asking anyway to get a more in depth understanding (which I don’t currently have) or have someone correct …

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## [Exploring Efficient not in Operations in Julia: Benchmarking Different Methods](https://discourse.julialang.org/t/exploring-efficient-not-in-operations-in-julia-benchmarking-different-methods/124729)

<div class="topic-metadata">

**Author:** [@0nyr](https://discourse.julialang.org/u/0nyr)\
**Replies:** 10\
**Last updated:** [January 14, 2025, 3:43pm UTC](https://discourse.julialang.org/t/exploring-efficient-not-in-operations-in-julia-benchmarking-different-methods/124729 "2025-01-14T15:43:04Z")

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So, it turns out there are a number of ways to write code in Julia that checks if a scalar is or is not within a vector. See benchmark repo. Exploring Efficient not in Operations in Julia Introduction Julia provides mu…

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## [Recursive closures/inner functions -- how to avoid boxing?](https://discourse.julialang.org/t/recursive-closures-inner-functions-how-to-avoid-boxing/124758)

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**Author:** [@foobar\_lv2](https://discourse.julialang.org/u/foobar_lv2)\
**Replies:** 6\
**Last updated:** [January 14, 2025, 1:40pm UTC](https://discourse.julialang.org/t/recursive-closures-inner-functions-how-to-avoid-boxing/124758 "2025-01-14T13:40:28Z")

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Consider code like julia\> function outer() function inner() false && inner() end inner end julia\> typeof(outer()).types svec(Core.Box) So this kind of code creates a box for the loca…

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## [Trying to debug ReadOnlyMemoryError()](https://discourse.julialang.org/t/trying-to-debug-readonlymemoryerror/124763)

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**Author:** [@ufechner7](https://discourse.julialang.org/u/ufechner7)\
**Replies:** 3\
**Last updated:** [January 14, 2025, 2:55pm UTC](https://discourse.julialang.org/t/trying-to-debug-readonlymemoryerror/124763 "2025-01-14T14:55:47Z")

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When precompiling the main branch of KiteModels.jl I get: julia\> integrator = KiteModels.init\_sim!(kps4\_; delta=0.03, stiffness\_factor=0.05, prn=false) ERROR: ReadOnlyMemoryError() Stacktrace: \[1\] \_evaluate(t::Vector…

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## [GLMakie 0.11.1 incompatible with DSP 0.8.0?](https://discourse.julialang.org/t/glmakie-0-11-1-incompatible-with-dsp-0-8-0/124761)

<div class="topic-metadata">

**Author:** [@tt1234567](https://discourse.julialang.org/u/tt1234567)\
**Replies:** 6\
**Last updated:** [January 14, 2025, 2:55pm UTC](https://discourse.julialang.org/t/glmakie-0-11-1-incompatible-with-dsp-0-8-0/124761 "2025-01-14T14:55:28Z")

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The latest version of GLMakie (0.11.1) seems to cause DSP to downgrade from 0.8.0 to 0.7.10. I don’t know how to diagnose the precise cause. I’m using Julia 1.11.2 on Windows 11.

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