golang 判断字符串是否为英文

//ContainsEnglish 检查是否为含英文

func ContainsEnglish(str string) bool {

  dictionary := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"

  for _, v := range str {

    if strings.Contains(dictionary, string(v)) {

      return true

    }

  }

  return false

}