[automerger skipped] Mark ab/7061308 as merged in stage. am: 2188055b68 -s ours am: 6706c243b2 -s ours am skip reason: Change-Id Ib1995bab25327524c008ae00be310a764aa19f18 with SHA-1 c62d25ec3e is in history Original change: undetermined MUST ONLY BE SUBMITTED BY AUTOMERGER Change-Id: Ib8eeb93b0c7f41dc1fb9ba663574c8bef28c0de2
“Small vector” optimization for Rust: store up to a small number of items on the stack
use smallvec::{SmallVec, smallvec}; // This SmallVec can hold up to 4 items on the stack: let mut v: SmallVec<[i32; 4]> = smallvec![1, 2, 3, 4]; // It will automatically move its contents to the heap if // contains more than four items: v.push(5); // SmallVec points to a slice, so you can use normal slice // indexing and other methods to access its contents: v[0] = v[1] + v[2]; v.sort();