toHash => pure, nothrow, const, @safe

[Martin Nowak]

On Mon, 12 Mar 2012 07:04:52 +0100, Alex Rønne Petersen  
<xtzgzorex at gmail.com> wrote:

> Or, as a compromise, perhaps the compiler can auto-infer most of the
> attributes without any further effort from the user.
>  No, that has API design issues. You can silently break a guarantee you  
> made previously.

What's wrong with auto-inference. Inferred attributes are only  
strengthening guarantees.