isMutable!(T) - intended/overlooked behaviour?

[Liam McSherry via Digitalmars-d]

On Monday, 11 January 2016 at 15:23:34 UTC, Liam McSherry wrote:
> On Monday, 11 January 2016 at 15:17:24 UTC, Liam McSherry wrote:
>> ---
>> enum int root_i = -1;
>> ---
>
> Or rather
>
> ---
> enum int sqrt_i = -1;
> ---

Argh. Obviously I need more coffee today.

---
enum int square_i = -1;
---