I'm working with some string-heavy applications so I was
curious about this myself. I'm new to D, but I did some heavy
data analysis on chat files a while back.
Not knowing anything about your data or what other queries you
might want to do on it, matching the first part of the string
with std.algorithm.startsWith() and splitting the line on a
delimiter outperforms regex matching on my admittedly arbitrary
test code.
This is the approach i used and it's very very fast. Using
std.algorithm.startsWith() and simple delimiter based string
slicing i've solved it. It's so fast there is hardly any slow
down.
As a side note, i also use regex matching for the same data in
debug blocks to assert the slicing method matches what i would of
got from the regex, which is nice.
