inferred size for static array initialization

[Basile B via Digitalmars-d-learn]

On Monday, 2 May 2016 at 13:00:27 UTC, Erik Smith wrote:
> Is there a way to initialize a static array and have it's size 
> inferred (and that works for arrays of structs using braced 
> literals)?  This would make it easier to maintain longer static 
> array definitions.  The code below doesn't work when removing 
> the array size even though the array is declared as static 
> immutable.
>
>     import std.traits;
>     static immutable int[] a  = [1,2,3];
>     static assert(isStaticArray!(typeof(a)));  // fails

Help yourself with a template:

----
import std.traits;

auto toStaticArray(alias array)()
if (isArray!(typeof(array)))
{
     enum size = array.length;
     alias T = typeof(array.init[0])[size];
     T result = array[0..size];
     return result;
}

enum a = toStaticArray!([1,2,3]);
static assert(isStaticArray!(typeof(a)));  // success
----

Does it fit ?