Variables with the same name pointing to different values

Created by: laerus

Is this by design?

Reproduction:

$ let var = 0
$ let var = [1 2 3]
$ echo $var
0
$ echo @var
1 2 3

Build information:

nightly-x86_64-unknown-linux-gnu 
ion 1.0.0-alpha (x86_64-unknown-linux-gnu)
rev 017d807566560684cec6d2ee79dd8775ed5a24b0