whole_func_string: function camelCase(str) {
      return words(str).reduce((result, word, idx) => {
          return result + (idx ? (isUpperCase(word) ? word : capitalize(word)) : lowerCase(word));
      }, '');
  }
func_code_string: function camelCase(str) {
      return words(str).reduce((result, word, idx) => {
          return result + (idx ? (isUpperCase(word) ? word : capitalize(word)) : lowerCase(word));
      }, '');
  }
func_documentation_string: ****************************************
  小驼峰
  ****************************************