 // can pre-reserve capacity.
 @inline(never)
 public func run_ArrayAppendArrayOfInt(_ N: Int) {
-  let other = Array(repeating: 1, count: 10_000)
+  let other: [Int] = otherOnes
+
   for _ in 0..<N {
     for _ in 0..<10 {
       var nums = [Int]()

// can pre-reserve capacity.
@inline(never)
public func run_ArrayAppendGenericStructs(_ N: Int) {
  let other = Array(repeating: S(x: 3, y: 4.2), count: 10_000)
  for _ in 0..<N {
    for _ in 0..<10 {
      var nums = [S<Int, Double>]()

// except +=, to check equally performant.
@inline(never)
public func run_ArrayPlusEqualArrayOfInt(_ N: Int) {
  let other: [Int] = otherOnes

  for _ in 0..<N {
    for _ in 0..<10 {
      var nums = [Int]()
