On Monday, 4 March 2013 at 03:58:20 UTC, deadalnix wrote:
On Monday, 4 March 2013 at 03:20:57 UTC, jerro wrote:
Maybe it is time to look at the python implementation and see
why it is faster.
It isn't faster:
$ time python3 test.py
real 0m14.217s
user 0m14.209s
sys 0m0.004s
$ gdmd -O -inline -release -noboundscheck test
$ time ./test
real 0m5.323s
user 0m5.312s
sys 0m0.008s
D code here uses the same string as the python code, not the
one in cvk012c's D code.
Using noboundcheck isn't fair as you give up on safety, so you
are not equivalent to python either.
But that does suggest that the main problem is that DMD has very
little optimization aimed at reducing the number of bounds checks
required.
