About ref used for performance reasons with struct

[John Colvin]

On Tuesday, 12 February 2013 at 17:29:07 UTC, deadalnix wrote:
> On Monday, 11 February 2013 at 18:38:28 UTC, John Colvin wrote:
>> On Monday, 11 February 2013 at 17:51:30 UTC, deadalnix wrote:
>>> Finally, why would you disable something that make your code 
>>> faster ?
>>
>> in order to do easier debugging / to avoid implementation bugs
>
> This is where the difference between allowing and enforcing 
> lies.

Of course, but it's always nice to be able to disable any 
optimization globally for any given compilation.

I personally like gcc's approach where you have very fine grained 
control over all optimisations. Something like this should have a 
compiler switch to enable/disable.