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minor optimization in the creation of zids #204

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minor optimization in the creation of zids #204

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12 changes: 6 additions & 6 deletions src/compression.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1369,8 +1369,8 @@ fn get_zippers(
// bubble from `f`
for f_zid in zids_of_node[&f].iter() {
// clone and extend zip to get new zid for this node
let mut zip = zip_of_zid[*f_zid].clone();
zip.insert(0,ZNode::Func);
let mut zip = vec![ZNode::Func];
zip.extend_from_slice(&zip_of_zid[*f_zid]);
let zid = zid_of_zip.entry(zip.clone()).or_insert_with(|| {
let zid = zip_of_zid.len();
zip_of_zid.push(zip);
Expand All @@ -1387,8 +1387,8 @@ fn get_zippers(
// bubble from `x`
for x_zid in zids_of_node[&x].iter() {
// clone and extend zip to get new zid for this node
let mut zip = zip_of_zid[*x_zid].clone();
zip.insert(0,ZNode::Arg);
let mut zip = vec![ZNode::Arg];
zip.extend_from_slice(&zip_of_zid[*x_zid]);
let zid = zid_of_zip.entry(zip.clone()).or_insert_with(|| {
let zid = zip_of_zid.len();
zip_of_zid.push(zip);
Expand All @@ -1407,8 +1407,8 @@ fn get_zippers(
for b_zid in zids_of_node[&b].iter() {

// clone and extend zip to get new zid for this node
let mut zip = zip_of_zid[*b_zid].clone();
zip.insert(0,ZNode::Body);
let mut zip = vec![ZNode::Body];
zip.extend_from_slice(&zip_of_zid[*b_zid]);
let zid = zid_of_zip.entry(zip.clone()).or_insert_with(|| {
let zid = zip_of_zid.len();
zip_of_zid.push(zip.clone());
Expand Down