regexredux program is outlier in Rust, because replacement of a regex in string is slower in regex crate, because author of regex crate chose to implement safer, but slower algorithm. To fix this, regex crate must be updated or replaced. I spent two weekends on this.
[1]: https://benchmarksgame-team.pages.debian.net/benchmarksgame/...
I somehow doubt pcre2 is being changed to make the tiny toy C programs run better.
> I spent two weekends on this.
So shouldn't we assume the program performance simply reflects all-those-hours you've spent working on it?
fn find_replaced_sequence_length(sequence: String) -> usize {
// Replace the following patterns, one at a time:
let substs = vec![
("tHa[Nt]", "<4>"),
("aND|caN|Ha[DS]|WaS", "<3>"),
("a[NSt]|BY", "<2>"),
("<[^>]*>", "|"),
("\\|[^|][^|]*\\|", "-"),
];
// Perform the replacements in the sequence:
substs
.iter()
.fold(sequence, |s, (re, replacement)| {
regex(re)
.replace_all(&s, NoExpand(replacement)).into_owned()
}).len()
}
Perhaps it would; those measurements have not been made.
What does that have to do with re-writing libraries to make tiny toy programs run better?
What does that have to do with program performance being a proxy for programmer effort?