Old problem with performance

[Frits van Bommel]

Walter Bright wrote:
> Weed wrote:
>> Daniel Keep пишет:
>>> Weed wrote:
>>>> [snip]
>>> If I had to take a guess, I'd say that it's six times slower because
>>> you're performing 100 million allocations.  You aren't benchmarking
>>> class/struct overhead, you're benchmarking the overhead of doing 100
>>> million allocations.
>>>
>>> You're comparing apples and heffalumps.
>>
>> Yes, but problem is that D does not leave  way to create a class
>> instance without allocation
> 
> You can allocate a class on the stack with:
> 
>    scope c = new C();

Which helps (a bit) with the two instances allocated in main(), but is 
rather unhelpful with the 100_000_000 allocated in opAdd() (they're 
returned)...