# Latest

**URL:** https://discourse.julialang.org/latest.md?page=896

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

**Page:** 897

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## [Optimal Quordle](https://discourse.julialang.org/t/optimal-quordle/88685)

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**Author:** [@aaowens](https://discourse.julialang.org/u/aaowens)\
**Replies:** 0\
**Last updated:** [October 13, 2022, 7:05pm UTC](https://discourse.julialang.org/t/optimal-quordle/88685 "2022-10-13T19:05:19Z")

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I’ve seen a lot of Wordle solvers, but I haven’t seen anything for Quordle, which is 4 Wordles at once. I made one using the entropy approach from 3Blue1Brown’s video and used some of the optimizations from this thread R…

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## [Julia distributed and multithreaded](https://discourse.julialang.org/t/julia-distributed-and-multithreaded/88649)

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**Author:** [@this\_josh](https://discourse.julialang.org/u/this_josh)\
**Replies:** 14\
**Last updated:** [October 13, 2022, 6:57pm UTC](https://discourse.julialang.org/t/julia-distributed-and-multithreaded/88649 "2022-10-13T18:57:53Z")

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In my code I leverage multithreading through the use of things like Threads.@threads and by starting julia with Julia --threads=auto. Alongside my code I now wish to utilise Juniper.jl which utilises distributed computin…

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## [FloatingTableView with Jupyter Notebook?](https://discourse.julialang.org/t/floatingtableview-with-jupyter-notebook/88659)

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**Author:** [@compleat](https://discourse.julialang.org/u/compleat)\
**Replies:** 7\
**Last updated:** [October 13, 2022, 5:33pm UTC](https://discourse.julialang.org/t/floatingtableview-with-jupyter-notebook/88659 "2022-10-13T17:33:30Z")

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FloatingTableView is a cool package for the console, but it doesn’t seem to work within a Jupyter Notebook (either using Jupytern or VSCode). Is there any way to get it working, or any alternatives for Notebook? Thank…

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## [How to speed up rowsum function?](https://discourse.julialang.org/t/how-to-speed-up-rowsum-function/88664)

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**Author:** [@Strange\_Xue](https://discourse.julialang.org/u/Strange_Xue)\
**Replies:** 6\
**Last updated:** [October 13, 2022, 4:57pm UTC](https://discourse.julialang.org/t/how-to-speed-up-rowsum-function/88664 "2022-10-13T16:57:40Z")

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There is a rowsum function in R, it’s very helpful and fast when constructing some likelihood function, rowsum can apply a function to a group subsetted from a matrix then concatenate these resulted vectors to a new mat…

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## [Any at UnitRange seems unoptimal](https://discourse.julialang.org/t/any-at-unitrange-seems-unoptimal/88650)

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**Author:** [@Marcell\_Havlik](https://discourse.julialang.org/u/Marcell_Havlik)\
**Replies:** 20\
**Last updated:** [October 13, 2022, 4:17pm UTC](https://discourse.julialang.org/t/any-at-unitrange-seems-unoptimal/88650 "2022-10-13T16:17:01Z")

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Hey Julianners! One of the most used struct UnitRange. I feel something is odd here. Why we have Any\[Core.Const(1), Int64\]? This sounds pretty unoptimal. using InteractiveUtils unitrange\_any(N) = begin c=1:N end uni…

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## [Type Parameterization of Elements based on \`FixedPointNumber.jl\` in a Function](https://discourse.julialang.org/t/type-parameterization-of-elements-based-on-fixedpointnumber-jl-in-a-function/88636)

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**Author:** [@RoyiAvital](https://discourse.julialang.org/u/RoyiAvital)\
**Replies:** 10\
**Last updated:** [October 13, 2022, 4:12pm UTC](https://discourse.julialang.org/t/type-parameterization-of-elements-based-on-fixedpointnumber-jl-in-a-function/88636 "2022-10-13T16:12:34Z")

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I created a function to convert Images.jl’s packed format into a planar format: using Images; function ConverImagePlanarForm( mI :: Matrix{RGB{Normed{U, f}}} ) :: Array{U, 3} where{U \<: Unsigned, f \<: Integer} # Co…

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## [Julia's stability guarantee (e.g. precompilation and "incremental compilation may be fatally broken for this module")](https://discourse.julialang.org/t/julias-stability-guarantee-e-g-precompilation-and-incremental-compilation-may-be-fatally-broken-for-this-module/88635)

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**Author:** [@Palli](https://discourse.julialang.org/u/Palli)\
**Replies:** 7\
**Last updated:** [October 13, 2022, 3:59pm UTC](https://discourse.julialang.org/t/julias-stability-guarantee-e-g-precompilation-and-incremental-compilation-may-be-fatally-broken-for-this-module/88635 "2022-10-13T15:59:58Z")

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As far as I know Julia has 1) a syntax guarantee, and 2) an API guarantee (for documented non-experimental stuff) But that doesn’t seem to be enough in practice, for packages. I see some precompilation issues, and worka…

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## [Is there an isabstract(T) function where T is a DataType?](https://discourse.julialang.org/t/is-there-an-isabstract-t-function-where-t-is-a-datatype/4165)

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**Author:** [@mohamed82008](https://discourse.julialang.org/u/mohamed82008)\
**Replies:** 18\
**Last updated:** [October 13, 2022, 2:49pm UTC](https://discourse.julialang.org/t/is-there-an-isabstract-t-function-where-t-is-a-datatype/4165 "2022-10-13T14:49:06Z")

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I wonder if there is a function that returns whether a type T is abstract or not. Any idea? I am trying to make a generator that returns all concrete types of a specific abstract type, and I need to check whether a certa…

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## [Passing keyword arguments to nested functions | or how to use macros to define a function whose kwargs are those of their inner function calls](https://discourse.julialang.org/t/passing-keyword-arguments-to-nested-functions-or-how-to-use-macros-to-define-a-function-whose-kwargs-are-those-of-their-inner-function-calls/88671)

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**Author:** [@abelsiqueira](https://discourse.julialang.org/u/abelsiqueira)\
**Replies:** 0\
**Last updated:** [October 13, 2022, 2:48pm UTC](https://discourse.julialang.org/t/passing-keyword-arguments-to-nested-functions-or-how-to-use-macros-to-define-a-function-whose-kwargs-are-those-of-their-inner-function-calls/88671 "2022-10-13T14:48:41Z")

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Important: I am trying to figure this out to compare to a Python approach, which I mention in the second part of the question. Suppose I have two functions, foo and bar, whose keyword argument I don’t know or care. Sup…

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## [Missing \<= 2 \<= 3 does not work](https://discourse.julialang.org/t/missing-2-3-does-not-work/88658)

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**Author:** [@Impressium](https://discourse.julialang.org/u/Impressium)\
**Replies:** 5\
**Last updated:** [October 13, 2022, 2:32pm UTC](https://discourse.julialang.org/t/missing-2-3-does-not-work/88658 "2022-10-13T14:32:10Z")

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julia\> f() = missing \<= 2 \<= 3 f (generic function with 1 method) julia\> @code\_lowered f() CodeInfo( 1 ─ %1 = Main.missing \<= 2 └── goto #3 if not %1 2 ─ %3 = 2 \<= 3 └── return %3 3 ─ return false…

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## [SSH host verification errors when \`dev\`ing a package from GitHub Enterprise with Julia 1.6.1](https://discourse.julialang.org/t/ssh-host-verification-errors-when-dev-ing-a-package-from-github-enterprise-with-julia-1-6-1/63816)

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**Author:** [@DanielIngraham](https://discourse.julialang.org/u/DanielIngraham)\
**Replies:** 4\
**Last updated:** [October 13, 2022, 2:05pm UTC](https://discourse.julialang.org/t/ssh-host-verification-errors-when-dev-ing-a-package-from-github-enterprise-with-julia-1-6-1/63816 "2022-10-13T14:05:46Z")

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I’m able to dev a package from my workplace’s GitHub Enterprise with Julia 1.5.4: $ julia \_ \_ \_ \_(\_)\_ | Documentation: https://docs.julialang.org (\_) | (\_) (\_) | \_ \_ \_| |\_ \_\_ …

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## [Vector of vectors supertype](https://discourse.julialang.org/t/vector-of-vectors-supertype/88666)

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**Author:** [@qassiov](https://discourse.julialang.org/u/qassiov)\
**Replies:** 4\
**Last updated:** [October 13, 2022, 2:05pm UTC](https://discourse.julialang.org/t/vector-of-vectors-supertype/88666 "2022-10-13T14:05:24Z")

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I would like to define a function that takes arguments of the type Vector{Vector{Float64}} but is also not restricted to just Float64s (e.g. it should also be able take arguments of type Vector{Vector{Int64}}). However,…

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## [Reading Text file using Sparse Matrix Format](https://discourse.julialang.org/t/reading-text-file-using-sparse-matrix-format/88665)

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**Author:** [@nosewitz](https://discourse.julialang.org/u/nosewitz)\
**Replies:** 0\
**Last updated:** [October 13, 2022, 1:44pm UTC](https://discourse.julialang.org/t/reading-text-file-using-sparse-matrix-format/88665 "2022-10-13T13:44:21Z")

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I have some data inside a text file encoded in the sparse matrix format, meaning that only the indices of non-zero entries are recorded. The first training entry is the following: 0 96 183 367 379 387 1041 1117 1176 13…

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## [Allocation when sorting a view](https://discourse.julialang.org/t/allocation-when-sorting-a-view/86558)

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**Author:** [@CodeGodz](https://discourse.julialang.org/u/CodeGodz)\
**Replies:** 16\
**Last updated:** [October 13, 2022, 1:32pm UTC](https://discourse.julialang.org/t/allocation-when-sorting-a-view/86558 "2022-10-13T13:32:17Z")

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Just reading through “In place sorting for views” and cannot wrap my head around the following allocations in my case: x = \[2,1,10,15,20\] @btime sort!(view($x, 2:4)) 53.308 ns (2 allocations: 96 bytes) To check I also…

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## [Custom multivariate distribution in Turing.jl](https://discourse.julialang.org/t/custom-multivariate-distribution-in-turing-jl/88414)

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**Author:** [@marouane](https://discourse.julialang.org/u/marouane)\
**Replies:** 11\
**Last updated:** [October 13, 2022, 1:31pm UTC](https://discourse.julialang.org/t/custom-multivariate-distribution-in-turing-jl/88414 "2022-10-13T13:31:35Z")

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I want to use a custom multivariate distribution that actually generates arrays, and I want to know if there’s anything I need to modify in order to be adapted to be used in Turing using Distributions struct OrthoNNDist…

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## [Can you do fine adjustment on legend position in Makie?](https://discourse.julialang.org/t/can-you-do-fine-adjustment-on-legend-position-in-makie/88662)

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**Author:** [@cdawg](https://discourse.julialang.org/u/cdawg)\
**Replies:** 2\
**Last updated:** [October 13, 2022, 1:25pm UTC](https://discourse.julialang.org/t/can-you-do-fine-adjustment-on-legend-position-in-makie/88662 "2022-10-13T13:25:46Z")

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I would like to do fine adjustment on the position of an axis so that it doesn’t interfere with plotted lines. Is there a way to do this? The documentation only shows the nine positions encoded by symbols like :lc in th…

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## [Grouped bar plots, with different number of bars in each group](https://discourse.julialang.org/t/grouped-bar-plots-with-different-number-of-bars-in-each-group/88517)

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**Author:** [@Torkel](https://discourse.julialang.org/u/Torkel)\
**Replies:** 8\
**Last updated:** [October 13, 2022, 12:44pm UTC](https://discourse.julialang.org/t/grouped-bar-plots-with-different-number-of-bars-in-each-group/88517 "2022-10-13T12:44:22Z")

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I have a few data sets: d1 = \[1,3,4,3,2\] d2 = \[2\] d3 = \[3\] d4 = \[5,3\] I want to create a bar plot, with one group for each data set, containing 4/1/1/2 bars respectively. Is this possible? I found groupedbar, but that …

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## [Can we use LinearExponential with Turing.jl model?](https://discourse.julialang.org/t/can-we-use-linearexponential-with-turing-jl-model/88479)

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**Author:** [@aelmokadem](https://discourse.julialang.org/u/aelmokadem)\
**Replies:** 18\
**Last updated:** [October 13, 2022, 11:39am UTC](https://discourse.julialang.org/t/can-we-use-linearexponential-with-turing-jl-model/88479 "2022-10-13T11:39:36Z")

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Trying to use the LinearExponential solver with a Turing.jl model to run a Bayesian inference. Can this example work? Model: dat\_test = \[0.0,4.4,6.9,8.2,7.8,7.5,6.2,5.3,4.9,3.7,1.05\] times = \[0.0,0.27,0.58,1.02,2.02,3.…

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## [Rlocusplot() does not plot the roots](https://discourse.julialang.org/t/rlocusplot-does-not-plot-the-roots/88547)

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**Author:** [@lucasmsoares96](https://discourse.julialang.org/u/lucasmsoares96)\
**Replies:** 3\
**Last updated:** [October 13, 2022, 10:46am UTC](https://discourse.julialang.org/t/rlocusplot-does-not-plot-the-roots/88547 "2022-10-13T10:46:34Z")

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Hello guys. I’m having trouble plotting the root locus diagram. He doesn’t show my roots. X(s) = \\frac{6s+204}{s^3+10s^2+34s} using ControlSystems sys2 = tf( \[6,204\], \[1,10,34,0\] ) rlocusplot(sys2) The Julia code ab…

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## [Solver throwing LinearAlgebra.SingularException(1) error for my ODE System](https://discourse.julialang.org/t/solver-throwing-linearalgebra-singularexception-1-error-for-my-ode-system/88281)

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**Author:** [@hbooth](https://discourse.julialang.org/u/hbooth)\
**Replies:** 6\
**Last updated:** [October 13, 2022, 9:19am UTC](https://discourse.julialang.org/t/solver-throwing-linearalgebra-singularexception-1-error-for-my-ode-system/88281 "2022-10-13T09:19:33Z")

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Hi, When I am trying to solve my ODE system I get a LinearAlgebra.SingularException(1) error and I am not sure why or what I can do about it. Here is my system: using DifferentialEquations const Nc = 100 const L = 1. …

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## [JuliaUserGroupMunich: Fall-in-love-with-julia 101 on Optimization.jl](https://discourse.julialang.org/t/juliausergroupmunich-fall-in-love-with-julia-101-on-optimization-jl/87548)

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**Author:** [@schlichtanders](https://discourse.julialang.org/u/schlichtanders)\
**Replies:** 5\
**Last updated:** [October 13, 2022, 8:02am UTC](https://discourse.julialang.org/t/juliausergroupmunich-fall-in-love-with-julia-101-on-optimization-jl/87548 "2022-10-13T08:02:33Z")

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Join us on :spiral\_calendar: Monday 10. October 2022 :clock630: 18:30 CEST organized via meetup Fall in love with Julia: Optimization in Julia 101 ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔ Optimization is at the heart of every …

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## [CSV and Parsers PosLen Length Future Support](https://discourse.julialang.org/t/csv-and-parsers-poslen-length-future-support/88646)

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**Author:** [@kcqpo](https://discourse.julialang.org/u/kcqpo)\
**Replies:** 3\
**Last updated:** [October 13, 2022, 5:33am UTC](https://discourse.julialang.org/t/csv-and-parsers-poslen-length-future-support/88646 "2022-10-13T05:33:39Z")

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PosLen function in Parsers only supports up to 64-bit values per cell right? I’m thinking of storing model parameters as string in a cell and this exceeds the length allowed in Parsers.jl. Is there going to be future sup…

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## [\[ANN\] Bessels.jl - Bessel, Hankel, and Airy functions](https://discourse.julialang.org/t/ann-bessels-jl-bessel-hankel-and-airy-functions/87941)

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**Author:** [@heltonmc](https://discourse.julialang.org/u/heltonmc)\
**Replies:** 12\
**Last updated:** [October 12, 2022, 11:26pm UTC](https://discourse.julialang.org/t/ann-bessels-jl-bessel-hankel-and-airy-functions/87941 "2022-10-12T23:26:36Z")

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We are excited to announce Bessels.jl which is a special function library written in Julia to compute Bessel and Modified Bessel functions, Spherical Bessel functions, Airy functions, and Hankel functions. Currently the …

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## [Asof join support in DataFrames.jl](https://discourse.julialang.org/t/asof-join-support-in-dataframes-jl/88445)

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**Author:** [@Yifan\_Liu](https://discourse.julialang.org/u/Yifan_Liu)\
**Replies:** 9\
**Last updated:** [October 13, 2022, 3:06am UTC](https://discourse.julialang.org/t/asof-join-support-in-dataframes-jl/88445 "2022-10-13T03:06:30Z")

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Is merging data frames by range supported now?

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## [Gurobi MIP start, calling GRBread to provide starting vector using a \*.mst/ \*.sol file](https://discourse.julialang.org/t/gurobi-mip-start-calling-grbread-to-provide-starting-vector-using-a-mst-sol-file/10610)

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**Author:** [@Anton\_Hinneck](https://discourse.julialang.org/u/Anton_Hinneck)\
**Replies:** 6\
**Last updated:** [October 13, 2022, 2:36am UTC](https://discourse.julialang.org/t/gurobi-mip-start-calling-grbread-to-provide-starting-vector-using-a-mst-sol-file/10610 "2022-10-13T02:36:06Z")

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Hi, i am currently developing a mixed integer model and need to pass an initial solution from a previous run to Gurobi. I probably could do it using JuMP’s setvalue() function. It would be much more handy however, to ju…

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## [Issue with UDE repository - LV\_Scenario 1](https://discourse.julialang.org/t/issue-with-ude-repository-lv-scenario-1/88618)

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**Author:** [@xztt](https://discourse.julialang.org/u/xztt)\
**Replies:** 8\
**Last updated:** [October 12, 2022, 10:33pm UTC](https://discourse.julialang.org/t/issue-with-ude-repository-lv-scenario-1/88618 "2022-10-12T22:33:38Z")

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Hi, When trying to perform the optimisation with Adam adtype = Optimization.AutoZygote() optf = Optimization.OptimizationFunction((x,p)-\>loss(x), adtype) optprob = Optimization.OptimizationProblem(optf, ComponentVector…

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## [Type issue to get PreallocationTools.DiffCache work with Symbolics.jacobian\_sparsity](https://discourse.julialang.org/t/type-issue-to-get-preallocationtools-diffcache-work-with-symbolics-jacobian-sparsity/88542)

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**Author:** [@cuihantao](https://discourse.julialang.org/u/cuihantao)\
**Replies:** 3\
**Last updated:** [October 12, 2022, 10:12pm UTC](https://discourse.julialang.org/t/type-issue-to-get-preallocationtools-diffcache-work-with-symbolics-jacobian-sparsity/88542 "2022-10-12T22:12:50Z")

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Hello, I would like to use Symbolics.jacobian\_sparsity to detect the sparsity pattern for a code that supports ForwardDiff.jacobian using PreallocationTools. The code below is a MWE for a program where the full residua…

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## [Stability of Julia](https://discourse.julialang.org/t/stability-of-julia/88498)

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**Author:** [@austin-putz](https://discourse.julialang.org/u/austin-putz)\
**Replies:** 102\
**Last updated:** [October 12, 2022, 9:46pm UTC](https://discourse.julialang.org/t/stability-of-julia/88498 "2022-10-12T21:46:04Z")

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Hi all, Just wondering where the stability of Julia is currently. I have given up on Julia many times because every time I go back there are so many things that have changed. I do research and many times implement somet…

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## [Using StatPlots failing, today, after it worked, yesterday](https://discourse.julialang.org/t/using-statplots-failing-today-after-it-worked-yesterday/88623)

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**Author:** [@fins](https://discourse.julialang.org/u/fins)\
**Replies:** 7\
**Last updated:** [October 12, 2022, 8:21pm UTC](https://discourse.julialang.org/t/using-statplots-failing-today-after-it-worked-yesterday/88623 "2022-10-12T20:21:00Z")

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In an attempt to explore @benchmark - results, I tried using StatPlots, but ran into the following Error… (the weird thing is, that I had StatPlots up and running, yesterday, already, but it fails, today). julia\> using…

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## [Plots still broken in Julia1.80 (Mac)](https://discourse.julialang.org/t/plots-still-broken-in-julia1-80-mac/88622)

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**Author:** [@compleat](https://discourse.julialang.org/u/compleat)\
**Replies:** 10\
**Last updated:** [October 12, 2022, 6:51pm UTC](https://discourse.julialang.org/t/plots-still-broken-in-julia1-80-mac/88622 "2022-10-12T18:51:27Z")

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Earlier this year, there was a reported issue with Julia1.7 and Plots (see ) This same error apparently still has not been resolved as of Julia1.80 (issue was originally reported for a Ubuntu system, but my error on …

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