Hello,

I am transferring some code from Matlab. In Matlab, the function `setdiff`

can take as input two 2D-arrays A and B, and returns the rows of A that are not in B.

In Julia, `setdiff`

is working on collection of iterables, and not dimension of arrays. How can I improve the following code? In particular `Atmp`

has type `Array{SubArray{Int64,1,Array{Int64,2},Tuple{Int64,Base.Slice{Base.OneTo{Int64}}},true},1}`

which is not very convenient.

```
A = [0 0; 0 1; 0 2; 0 3; 1 0; 1 1]
B = [0 1; 2 0; 1 0]
Atmp = setdiff(eachslice(A; dims = 1), eachslice(B;dims = 1))
@show typeof(Atmp)
cardinal = size(Atmp,1)
Asetdiff = zeros(Int64,cardinal,2)
@inbounds for i=1:cardinal
Asetdiff[i,:] = Atmp[i]
end
Asetdiff
```

4×2 Array{Int64,2}:

0 0

0 2

0 3

1 1