On Thursday, 2 July 2015 at 19:27:57 UTC, J Miller wrote:
> I knew that automatic allocation doesn't happen, but I'm confused by the fact if you explicitly declare "c" with "int[] c;" and then assign "c[] = a[] * b[]", versus using "auto c = a[] * b[]", you get two different errors (array length mismatch vs no destination memory).

I find it confusing as well. For me it's about consistency of syntax. For instance, auto z = x+y works with numeric types, but the equivalent you use for arrays doesn't work. It just means one more thing to remember.