On Saturday, 2 March 2013 at 15:33:42 UTC, Andrei Alexandrescu
wrote:
On 3/1/13 8:05 PM, cvk012c wrote:
In my latest version of D script I didn't use splitter at all.
I used
string specific indexOf function. Still result is very bad.
For text
based protocols, such as SIP, performance of string
manipulating
functions is very important. Unfortunately, looks like it is
not D
strongest point at this time.
That conclusion would be hasty if not missing the whole point.
You essentially measured the speed of one loop in various
translators implementing various languages. Java code doing
straight computation is on a par with C speed, no two ways
about that. Python code using library primitives ain't no
slouch either.
That is true, but what prevents D to do the same? Why Java code
can be on par with C speed and D cannot? If Java and Python folks
can do it, why D creators cannot? If performance optimizations is
always number one priority in Java and Python community, why it
is not a case for D?
I will go even further: what prevents D to be faster than C?
That's where D will really shine and people will start talking
about.
But that is probably a distant future of D and for now, my
personal opinion is that ANY part of D code should not be slower
than at least Java.
If it is, it should be reported as an issues and fixed.
Being more than twice slower than Java is a failure.
