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broadcast type preservation #674

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broadcast type preservation #674

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6 changes: 3 additions & 3 deletions src/unzipped.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -35,7 +35,7 @@ function unzip_broadcast(f::F, args...) where {F}
# This is a crude way to allow GPU arrays, not currently tested, TODO.
# See also https://github.com/JuliaArrays/StructArrays.jl/issues/150
return unzip(broadcast(f, args...))
elseif bcs isa Broadcast.AbstractArrayStyle
elseif bcs isa Broadcast.Broadcast.ArrayStyle{<:Array} # components of a structarray is array, so it has to broadcast to an array
return StructArrays.components(StructArray(bc))
else
return unzip(broadcast(f, args...)) # e.g. tuples
Expand Down Expand Up @@ -103,7 +103,7 @@ function unzip(xs::AbstractArray)
end

@generated function unzip(xs, ::Val{N}) where {N}
each = [:(map($(Get(i)), xs)) for i in 1:N]
each = [:(broadcast($(Get(i)), xs)) for i in 1:N]
Expr(:tuple, each...)
end

Expand All @@ -114,7 +114,7 @@ unzip(xs::AbstractArray{Tuple{T}}) where {T} = (reinterpret(T, xs),) # best cas
# good case, no copy of data, some trivial arrays
[Base.issingletontype(T) ? :(similar(xs, $T)) : :(reinterpret($T, xs)) for T in Ts.parameters]
else
[:(map($(Get(i)), xs)) for i in 1:length(fieldnames(Ts))]
[:(broadcast($(Get(i)), xs)) for i in 1:length(fieldnames(Ts))]
end
Expr(:tuple, each...)
end
Expand Down