tustvold commented on code in PR #5235:
URL: https://github.com/apache/arrow-rs/pull/5235#discussion_r1435345943
##########
arrow-string/src/regexp.rs:
##########
@@ -81,15 +81,15 @@ pub fn regexp_is_match_utf8<OffsetSize: OffsetSizeTrait>(
(Some(value), Some(pattern)) => {
let existing_pattern = patterns.get(&pattern);
let re = match existing_pattern {
- Some(re) => re.clone(),
+ Some(re) => re,
None => {
let re = Regex::new(pattern.as_str()).map_err(|e| {
ArrowError::ComputeError(format!(
"Regular expression did not compile: {e:?}"
))
})?;
- patterns.insert(pattern, re.clone());
- re
+ patterns.insert(pattern.clone(), re);
Review Comment:
Perhaps you could use
https://doc.rust-lang.org/std/collections/hash_map/enum.Entry.html#method.or_insert
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