Is D slow?

[Nicholas Wilson via Digitalmars-d-learn]

On Saturday, 10 June 2017 at 12:44:07 UTC, Honey wrote:
> On Saturday, 10 June 2017 at 12:23:05 UTC, Nicholas Wilson 
> wrote:
>> On Saturday, 10 June 2017 at 12:16:34 UTC, Honey wrote:
>>> Is it expected that turning off bounds checking can lead to a 
>>> performance decrease?
>>
>> Yes, with it on you are doing an "is the index <= the length" 
>> for every array access. Now some of them can be elided by the 
>> complier when it can prove that the index is always in bounds 
>> but it is generally dangerous to do so as it opens up the 
>> possibility of buffer overflow.
>
> Are you saying that introducing additional checks enables the 
> optimizer to eliminate more or more costly checks than it could 
> without introducing those additional checks in the first place? 
> Can you give an example?

My bad I misread the original quote, misread that as performance 
increase.
turning bounds checks off should always result in faster code.