This is confusing (on 0.5.0): imagine calling a function that returns 2 values in a loop:

```
julia> f()=1,2
f (generic function with 1 method)
julia> a,b=f()
(1,2)
julia> a
1
julia> b
2
julia> u=v=zeros(2,1);i=1;
julia> u[i],v[i]=f()
(1,2)
```

I was surprised by this:

```
julia> u
2×1 Array{Float64,2}:
2.0
0.0
julia> v
2×1 Array{Float64,2}:
2.0
0.0
```

I suppose this is related to the immutability of tuples and not a bug, but it is really surprising.

Edit: Never mind. u and v are the same arrays of course. How does one delete posts?

s-broda:

u=v=zeros(2,1)

Your problem is here… `u`

and `v`

point to the same exact matrix, so when `u[i],v[i]=f()`

is unpacked, it first sets the matrix item to `1`

, and then to `2`

. Since there’s only one matrix, they both show the `2`

.

Thanks. Just figured it out myself but you beat me to it

When a solution has been found and posted (even if by yourself), please mark the relevant post ad the solution by pressing the corresponding button.

and the corresponding button is? I see ‘bookmark’, ‘share’, ‘flag’ and ‘reply’ and ‘like’…

There should be one with a check mark (tick mark).

DNF
January 20, 2017, 9:47am
7
Presumably, only the OP can see that box.

That would make some sense, but even on the threads i started i don’t see this? Might be a browser issue?