Problem with QuArray type promotion about qubase.jl HOT 2 OPEN

Yeah, it's just poorly defined in Base (I commented on this a while ago). Note that it is well-defined in v0.4:

julia> promote_type(Array{Float64,2},Array{Complex128,2})
Array{Complex{Float64},2}

We could always patch this ourselves by defining the below internally:

Base.promote_rule{A,B,N}(::Type{Array{A,N}}, ::Type{Array{B,N}}) = Array{promote_type(A,B),N}

Or just give up on v0.3 and switch to v0.4, which is actually starting to sound like a reasonable decision...at this point, it doesn't appear that QuBase.jl will be released by the time that v0.4 releases, so we might as well switch over so that we don't release on an old version.

from qubase.jl.

Thanks @jrevels. Good to know that it is fixed in 0.4.

I don't know the schedule for releasing 0.4 since I didn't (couldn't) follow the developments over summer. Since it is not very complex, we could also just add your patch conditional on the version of Julia. Then we don't have to give up 0.3 immediately ...

from qubase.jl.