Hi!

I was using the elemet-wize allocation ( .= ) as the copy function. But I found that in certain cases, it’s not. I want to know in which case I can use element-wize allocation as the copy function.

for example

```
C11 = fill(0.0im,(2,10))
C12 = fill(0.0im,(2,10))
for i = 1: 2
C13 = fill(i,10)
C11[i,:,:] = copy(C13)
C12[i,:,:] .= 1*C13
end
C12[1,:] # ten of 1.0
C12[2,:] # ten of 2.0
C11[1,:] # ten of 1.0
C12[2,:] # ten of 2.0
C15 = fill(1.0im*fill(0.0,(10)),(2))
C14 = fill(1.0im*fill(0.0,(10)),(2))
for i = 1: 2
C13 = fill(i,10)
C14[i] = copy(C13)
C15[i] .= 1*C13
end
C14[1] # ten of 1.0
C14[2] # ten of 2.0
**C15[1] # ten of 2.0**
C15[2] # ten of 2.0
```

I found strange results

```
C14 = fill(1.0im*fill(0.0,(10)),(2))
for i = 1: 2
C13 = fill(i,10)
C15[i] **.=** C13
end
C15[1] # 2.0
for i = 1: 2
C13 = fill(i,10)
C15[i] **=** C13
end
C15[1] #1.0
for i = 1: 2
C13 = fill(i,10)
C15[i] **.=** C13
end
C15[1] # 1.0
```