How do you safely deal with range.front?

[ag0aep6g]

On 12/31/2017 02:14 PM, aliak wrote:
> Also, is going out of array bounds well defined behavior in D even with 
> boundscheck off?

No. Without the checks you get undefined behavior. I.e., 
`-boundscheck=off` defeats the `@safe` attribute. For that reason, I'd 
advise against ever using it. Definitely don't think of it as a harmless 
optimization switch.