commit 69502942b00ecc944437894b40b286cbfa3df928 Author: Nick Mathewson <nickm@torproject.org> Date: Fri Oct 27 13:02:14 2017 -0400 [rust] Avoid a clone in contract_protocol_list() --- src/rust/protover/protover.rs | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/rust/protover/protover.rs b/src/rust/protover/protover.rs index 11e9d0079..f19f7972f 100644 --- a/src/rust/protover/protover.rs +++ b/src/rust/protover/protover.rs @@ -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();