Error when broadcast-assigning scalar to ArrayPartition

[jlumpe]

I don't know enough about broadcasting or the AbstractArray interface to know what's actually going on here. This is with version 1.0.0.

julia> a = ArrayPartition(zeros(10))
([0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0],)

julia> a .= 1.
ERROR: MethodError: copyto!(::ArrayPartition{Float64,Tuple{Array{Float64,1}}}, ::Base.Broadcast.Broadcasted{Base.Broadcast.DefaultArrayStyle{0},Tuple{Base.OneTo{Int64}},typeof(identity),Tuple{Float64}}) is ambiguous. Candidates:
  copyto!(dest::ArrayPartition, bc::Base.Broadcast.Broadcasted) in RecursiveArrayTools at /Users/student/.julia/packages/RecursiveArrayTools/vxlTS/src/array_partition.jl:247
  copyto!(dest::AbstractArray, bc::Base.Broadcast.Broadcasted{#s623,Axes,F,Args} where Args<:Tuple where F where Axes where #s623<:Base.Broadcast.AbstractArrayStyle{0}) in Base.Broadcast at broadcast.jl:803
Possible fix, define
  copyto!(::ArrayPartition, ::Base.Broadcast.Broadcasted{#s623,Axes,F,Args} where Args<:Tuple where F where Axes where #s623<:Base.Broadcast.AbstractArrayStyle{0})
Stacktrace:
 [1] materialize!(::ArrayPartition{Float64,Tuple{Array{Float64,1}}}, ::Base.Broadcast.Broadcasted{Base.Broadcast.DefaultArrayStyle{0},Nothing,typeof(identity),Tuple{Float64}}) at ./broadcast.jl:756
 [2] top-level scope at none:0

[ChrisRackauckas]

Not many people know enough about broadcasting for this. This might be pretty hard to untangle.