Performance

[Adam D. Ruppe via Digitalmars-d]

On Friday, 30 May 2014 at 13:35:59 UTC, Thomas wrote:
>   return (format("%s  %f","plus\nLast: ", sum) );

I haven't actually run this but my guess is that the format 
function is the slowish thing here. Did you create a new string 
in the C version too?

> gdc ./source/perf/testperf.d -frelease -o testperf

The -O3 switch might help too, which turns on optimizations.