how to be faster than perl?

[Boris Bukowski]

> // (untested code)
> auto re = new RegExp("horizontal");
> foreach (ulong n, char[] line; file) {
>      if (re.find(line) > -1) {
> // ...
> -----
> as the start of your foreach loop.
> That should be faster.
> 
> I don't know how fast it'll be compared to Perl; I don't know anything
> about the relative performance of D vs. Perl regexes. (In fact, I hardly
> ever use regexes, and have never used Perl)

buko01 at dizit:~/d$ time ./lineio.pl access.log
1087

real    0m0.105s
user    0m0.092s
sys     0m0.012s
buko01 at dizit:~/d$ time ./lineio2 access.log
1087

real    0m1.547s
user    0m1.528s
sys     0m0.020s

still 15 times slower :-(
Perl strings/IO must be somehow black magic.
Looks like I have to write my own lineReader.

Boris