BTreeMap: more refactoring around edges#77244

Merged

bors merged 2 commits intorust-lang:masterfrom ssomers:btree_love_the_leaf_edge

Oct 21, 2020

+39-52

Commits on Oct 20, 2020

BTreeMap: reuse BoxedNode instances directly instead of their contents
ssomers
committed
BTreeMap: less sharing, more similarity between leaf and internal nodes
ssomers
committed