[thrww120956]

There's no way to do this (a single instruction loop vs 10 loops with a single instruction) in JS or Golang.

[tsimionescu]

I don't mean assembly-level instructions, just general instructions in the language:

  for i := range arr {
    foo1(arr[i])
    ...
    foo10(arr[i])
  }

Vs

  for i := range arr {
    foo1(arr[i])
  }
  ... 
  for i := range arr {
    foo10(arr[i])
  }