methodology

    package main
    import "fmt"
    func main() {
      go func() {
        for ;; {}
      }()
      for ;; {
        fmt.Println("still here")
      } 
    }

    package main
    import "fmt"
    func f(v int) int {
      return v+1
    }
    func g(x int) int {
      if (x > 100) {
        return 1
      }
      return 0
    }
    func main() {
      go func() {
        for ;; {
          if g(f(111)) == 0 {
            break
          }
        }
      }()
      for ;; {
        fmt.Println("still here")
      } 
    }