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[rust] Avoid a clone in contract_protocol_list()

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This commit is contained in:
Nick Mathewson 2017-10-27 13:02:14 -04:00
parent 12f58b42a8
commit 69502942b0
1 changed files with 3 additions and 2 deletions
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5
src/rust/protover/protover.rs
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@ -429,8 +429,9 @@ fn find_range(list: &Vec<u32>) -> (bool, u32) {
/// A `String` representation of this set in ascending order.
///
fn contract_protocol_list<'a>(supported_set: &'a HashSet<u32>) -> String {
let mut supported_clone = supported_set.clone();
let mut supported: Vec<u32> = supported_clone.drain().collect();
let mut supported: Vec<u32> = supported_set.iter()
.map(|x| *x)
.collect();
supported.sort();
let mut final_output: Vec<String> = Vec::new();