Atila Neves: "C IS NOT MAGICALLY FAST, PART 2"

[Johan Engelen via Digitalmars-d]

On Tuesday, 19 July 2016 at 10:07:11 UTC, Atila Neves wrote:
> On Tuesday, 19 July 2016 at 02:54:37 UTC, Saurabh Das wrote:
>>
>> Posted on Atila's blog yesterday:
>>
>> https://atilanevesoncode.wordpress.com/2016/07/18/c-is-not-magically-fast-part-2/
>
> So, about D vs C++ there... last night for reasons I forget I 
> tried replacing std::string with const char* in the C++ 
> version, and then it got faster than D. I don't know why.

Very interested to hear why one is faster than the other.

> At first I thought std::string was being copied instead of 
> being moved, but some static_asserts made me doubt that. Either 
> way, there's no good reason I can think of for C++ to magically 
> speed up for const char*. Hmm :(

The strings seem a little short, e.g. "foo1234foo" if I 
understand correctly.
Could there be a performance hit in C++ due to small-string 
optimization ? (Don't know if it is done at all, nor what the 
threshold is)