Is it possible to do
X::Vector{Any}=zeros(2)
@tullio X[i] = [1,missing][i]
in one line? something like
@tullio X[i]::Vector{Any} := [1,missing][i]
Also, is it possible to apply a custom aggregation function? something like
@tullio (x->join(x,' ')) s := [1,2][i]