GoPar: Automatic Loop Parallelization of Go Programs(github.com)

  var a []X
  ...
  done := make(chan bool)
  b := make([]Y,len(a))
  for i, _ := range a {
    go func (j int){
      b[j] = process(a[j])
      done <- true
    }(i)
  }
  for n:=0; n<len(a); n++ { _ = <-done }