SciML/ComponentArrays.jl

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Arrays with arbitrarily nested named components.

Stars: 375
Forks: 42
Open beginner issues: 0
Indexed issues: 74
Avg merge: 7h 25m
Merged PRs (30d): 17

Dominant language: Julia
License: MIT
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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74 open issues indexed

FR: View sub-arrays as Complex with Real underlying array Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

SciML/ComponentArrays.jl#344 · Opened Mar 26, 2026
Looping over nested fields Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/ComponentArrays.jl#338 · Opened Mar 5, 2026
getindex(::ComponentVector, ::Symbol) returns a copy, while getproperty returns a view Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

SciML/ComponentArrays.jl#337 · Opened Mar 5, 2026
Reactant tests disabled on Julia 1.13+ Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

SciML/ComponentArrays.jl#328 · Opened Jan 11, 2026
JET tests should be in a nopre group! Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

SciML/ComponentArrays.jl#321 · 1 comment · Opened Dec 29, 2025
unpack columns of a ComponentMatrix Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

SciML/ComponentArrays.jl#315 · Opened Nov 14, 2025
Type instability in ComponentMatrix if index for FlatAxis is not constant Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

SciML/ComponentArrays.jl#306 · Opened May 6, 2025
Add utility for structured updates in `ComponentArrays` Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

SciML/ComponentArrays.jl#303 · Opened Apr 12, 2025
Low-latency ComponentArrays Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/ComponentArrays.jl#302 · 4 comments · Opened Apr 11, 2025
Matrix-vector multiplication with CuArray does not work (`unsafe_convert` error) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

SciML/ComponentArrays.jl#286 · Opened Dec 9, 2024
`@static_unpack` does not seem to work as advertised Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SciML/ComponentArrays.jl#285 · 3 comments · Opened Dec 8, 2024
vcat of ComponentVectors is type-unstable Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SciML/ComponentArrays.jl#270 · Opened Sep 26, 2024
Zygote gradient fails in `v0.15.14` but not on `v0.15.13` Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

SciML/ComponentArrays.jl#268 · 1 comment · Opened Aug 30, 2024
Consistency in types when indexing ComponentVector with empty tuple Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

SciML/ComponentArrays.jl#267 · Opened Aug 13, 2024
`convert(T, y)` is not always a `T` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#266 · Opened Aug 7, 2024
involuntary squeeze() with vector of vectors. Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

SciML/ComponentArrays.jl#264 · 2 comments · Opened Jul 26, 2024
Missing reduced_index Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#261 · Opened May 28, 2024
Get rid of `ComponentMatrix` and higher-order `ComponentArray`s? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/ComponentArrays.jl#258 · 12 comments · Opened Apr 22, 2024
FR: Preserve CA-ness when indexing component matrix with shaped components Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#257 · 1 comment · Opened Apr 7, 2024
ComponentArray errors with `findall` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#255 · Opened Mar 26, 2024
`Diagonal(ComponentArray)` scalar indexing error Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#250 · 1 comment · Opened Mar 6, 2024
Nine broken tests for Test Summary: | Pass Broken Total Time Broadcasting | 30 9 39 7.2s Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

SciML/ComponentArrays.jl#245 · 1 comment · Opened Feb 19, 2024
Extend KeepIndex to Vector indices Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

SciML/ComponentArrays.jl#243 · 1 comment · Opened Feb 16, 2024
How to get index range of subarray? Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#240 · 4 comments · 1 reaction · Opened Jan 23, 2024
getting "Only homogeneous arrays are allowed" error for Vector{SVector} Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#239 · 4 comments · Opened Jan 8, 2024
Scalar indexing on GPU when computing `Zygote.gradient` of `dot(x::CA, x::CA)` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#236 · Opened Nov 30, 2023
`lmul!` fails with Component Array on GPU Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

SciML/ComponentArrays.jl#232 · Opened Nov 1, 2023
Problem with `Zygote.hessian` Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

SciML/ComponentArrays.jl#228 · 1 comment · Opened Oct 25, 2023
error on empty array of named tuples Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

SciML/ComponentArrays.jl#214 · Opened Jul 10, 2023
Missing ChainRule for `ComponentVector(a; b...)` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#207 · 4 comments · Opened May 20, 2023
Reexport `inv` and `diag` etc from `LinearAlgebra`? Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#187 · 2 comments · Opened Feb 5, 2023
Implementation of a `merge` function Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#186 · 4 comments · Opened Feb 5, 2023
UndefVarError: len not defined in `make_idx(data, pair::Pair, last_val)` Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

SciML/ComponentArrays.jl#185 · 1 comment · Opened Jan 26, 2023
Compatibility with StaticArrays? Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

SciML/ComponentArrays.jl#183 · 7 comments · Opened Jan 9, 2023
Compatibility with OffsetArrays Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#178 · 2 comments · Opened Nov 23, 2022
Compatibility with BlockArrays? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

SciML/ComponentArrays.jl#177 · 4 comments · Opened Nov 18, 2022
Construction of ComponentArray inside of AD/Zygote Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

SciML/ComponentArrays.jl#176 · 2 comments · Opened Nov 17, 2022
Cannot create zero-length ComponentArray Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#173 · 4 comments · Opened Oct 26, 2022
hcat: type unstable based on the number of arguments Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

SciML/ComponentArrays.jl#168 · 3 comments · Opened Oct 19, 2022
How to efficiently access first element of all subarrays, i.e. [:,1] or explicitly [(:SWATI, :GWAT),:amt] Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#165 · 3 comments · Opened Oct 3, 2022
Unnecessary allocation when not unpacking? Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#161 · 2 comments · Opened Aug 2, 2022
ComponentArray with scalars on GPU Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#160 · 2 comments · Opened Aug 1, 2022
Make `map` output consistent with the rest of broadcasting Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

SciML/ComponentArrays.jl#156 · Opened Jul 29, 2022
Better `ComponentMatrix` `show`ing Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#147 · Opened Jul 7, 2022
assure type in getdata Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

SciML/ComponentArrays.jl#141 · 2 comments · Opened Jun 15, 2022
provide type-inferred length Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

SciML/ComponentArrays.jl#138 · Opened Jun 3, 2022
Should the underlying Arraytype be preserved during KeepIndex subsetting? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#136 · 2 comments · Opened Jun 1, 2022
Unexpected behavior of KeepIndex with partitioned axis Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

SciML/ComponentArrays.jl#134 · Opened Jun 1, 2022
Document Axis creating and multi-component indexing Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

SciML/ComponentArrays.jl#133 · Opened May 31, 2022
Component Arrays with DAE's Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

SciML/ComponentArrays.jl#128 · 1 comment · 1 reaction · Opened May 26, 2022

SciML/ComponentArrays.jl

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