Post about comparing C, C++ and D performance with a real world project

Iain Buclaw ibuclaw at gdcproject.org
Thu Dec 7 22:03:50 UTC 2017


On 7 December 2017 at 20:56, Steven Schveighoffer via Digitalmars-d
<digitalmars-d at puremagic.com> wrote:
> On 12/7/17 1:26 PM, Daniel Kozak wrote:
>>
>> This is not about write the best D code. It is about similar code to
>> perform same. However when I looked at the D code it is not good port of
>> C/C++. He made many mistakes which make it slower than C/C++ counterpart.
>> One example is read_one_line function:
>> C++: https://github.com/jpakkane/pkg-config/blob/cpp/parse.cpp#L60
>> D: https://github.com/jpakkane/pkg-config/blob/d/parse.d#L57
>
>
> Wow, interesting that D uses less memory with that continue new char[1] in
> there!
>

I would have thought that it just reuses the same pointer to the GC on
each loop.


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