JuliaArrays / JuliaArrays/StaticArrays.jl

`BroadcastStyle` of adjoints and transposes of static vectors seems incorrect

Open
#927 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

broadcast
Dominant language
Julia
Stars
844
Forks
159
Avg merge
3d 21h
Merged PRs (30d)
3

Description

As in the title, see the following example:

julia> Broadcast.BroadcastStyle(typeof([1,2]'))
Base.Broadcast.DefaultArrayStyle{2}()

julia> Broadcast.BroadcastStyle(typeof((SA[1,2])'))
StaticArrays.StaticArrayStyle{1}()

AFAIK we should have

BroadcastStyle(::Type{<:Transpose{<:Any, <:StaticVector}})= StaticArrayStyle{2}()
BroadcastStyle(::Type{<:Adjoint{<:Any, <:StaticVector}}) = StaticArrayStyle{2}()

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the two Broadcast.BroadcastStyle examples in the issue and locating the existing style definitions for static vectors, transposes, and adjoints. Done means transpose and adjoint static vectors return StaticArrayStyle{2} consistently with the expected behavior, with regression coverage for both cases.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
data
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
55/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.