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Add benches #13
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What was ChatGPT's code? |
Sure! #![feature(test)]
extern crate test;
use convert_case::{Case, Casing};
fn to_camel(s: &str) -> String {
let mut result = String::with_capacity(s.len());
let mut capitalize_next = false;
for c in s.chars() {
if c == ' ' || c == '_' || c == '-' {
capitalize_next = true;
} else {
if capitalize_next {
result.push(c.to_ascii_uppercase());
capitalize_next = false;
} else {
result.push(c.to_ascii_lowercase());
}
}
}
result
}
fn to_snake(s: &str) -> String {
let mut result = String::with_capacity(s.len());
let mut upper_count = 0;
for (i, c) in s.chars().enumerate() {
if c.is_uppercase() {
upper_count = 1;
if i > 0 && upper_count < 2 {
result.push('_');
}
result.push(c.to_ascii_lowercase());
} else {
if upper_count > 1 {
if let Some(last_c) = result.pop() {
result.push('_');
result.push(last_c);
}
}
upper_count = 0;
result.push(c);
}
}
result
}
#[cfg(test)]
mod tests {
use super::*;
use test::Bencher;
#[test]
fn it_works() {
assert_eq!("ronnieJamesDio", "Ronnie_James_dio".to_case(Case::Camel));
assert_eq!("ronnie_james_dio", "ronnieJamesDio".to_case(Case::Snake));
assert_eq!("ronnieJamesDio", to_camel("Ronnie_James_dio"));
assert_eq!("ronnie_james_dio", to_snake("ronnieJamesDio"));
}
#[bench]
fn bench_to_camel1(b: &mut Bencher) {
b.iter(|| "Ronnie_James_dio".to_case(Case::Camel));
}
#[bench]
fn bench_to_camel2(b: &mut Bencher) {
b.iter(|| to_camel("Ronnie_James_dio"));
}
#[bench]
fn bench_to_snake1(b: &mut Bencher) {
b.iter(|| "ronnieJamesDio".to_case(Case::Snake));
}
#[bench]
fn bench_to_snake2(b: &mut Bencher) {
b.iter(|| to_snake("ronnieJamesDio"));
}
}
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I compared this crate with ChatGPT's code. And ChatGPT's code was faster than this one.
Maybe we need to optimize the algorithm for converting a case.
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