const, auto and struct/class methods

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On Monday, 25 November 2013 at 12:13:42 UTC, Joseph Rushton 
Wakeling wrote:
> Actually, your suggestion made me realize I could do even 
> better -- here's the patch I came up with in the end:
> https://github.com/WebDrake/Dgraph/commit/34d6cfacee928b74d084cff7c2f6c438f5144436
>
> The arrays in question are only ever assigned as slices of 
> underlying data, so they can be const(size_t)[][] from the 
> start.
>
> So, thank you! :-)
>
> I would still like to know if there's a way of enforcing 
> const-ness in an auto return type, though.  You never know when 
> it could be useful.

This might be worth filing a bug report over. It definitely seems 
like a useful feature.