faster "stringification"

[Nicholas Wilson via Digitalmars-d-learn]

On Sunday, 11 December 2016 at 10:01:21 UTC, Orut wrote:
> On Sunday, 11 December 2016 at 02:46:58 UTC, Nicholas Wilson 
> wrote:
>>
>> join performs allocations which is probably the reason for its 
>> slowness. There is joiner (in std.algorithm.iterations) that 
>> lazily performs the join, (though in the case of this 
>> "benchmark" will be cheating because you don't do anything 
>> with the result, print it to get a more fair comparison) 
>> avoiding allocation.
>>
>> see also appender (in std.array) for fast concatenation.
>
> Thanks, Stefan and Nicholas. I think joiner did the trick (for 
> 50M iterations, ~2s for D, ~17s for Python).

Excellent. that seem more like the numbers i would expect.