[Issue 7444] Require [] for array copies too

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7444



--- Comment #2 from Kenji Hara <k.hara.pg at gmail.com> 2012-02-09 05:33:52 PST ---
(In reply to comment #1)
> While I agree that the syntax should be enforced more strictly in general, I
> still completely disagree with requiring [] on static array copies. Static
> arrays are value types of fixed size, and should be treated as such. Requiring
> [] is just wrong.
> 
> void foo(int[4] x){}
> void foo(int[] y){}
> 
> void main(){
>     int[4] x, y;
>     struct S{int[4] x;}
>     S a, b;
>     x = y;
>     a = b; // why should this work if the above does not?
>     foo(x);   // copies, you want this to be an error
>     foo(x[]); // calls the other overload, does not copy
> }

I completely agree with Timon.
When x and y are declared with same type T, x = y is identity assignment, and
it is valid syntax even if T is static array type.

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