Boost C++ 库

...世界上最受推崇和设计精良的 C++ 库项目之一。 — Herb Sutter 和 Andrei Alexandrescu，《C++ 编码规范

类 validation_error - Boost C++ 函数库

类 validation_error

boost::program_options::validation_error

提要

// In header: <boost/program_options/errors.hpp>


class validation_error :
  public boost::program_options::error_with_option_name
{
public:

  enum kind_t { multiple_values_not_allowed = 30, at_least_one_value_required, 
                invalid_bool_value, invalid_option_value, invalid_option };

  // public member functions
  validation_error(kind_t, const std::string & = "", const std::string & = "", 
                   int = 0);
  kind_t kind() const;

  // protected member functions
  std::string get_template(kind_t);
};

描述

当选项的值不正确时抛出的类。

`validation_error` 公有成员函数

validation_error(kind_t kind, const std::string & option_name = "", 
                 const std::string & original_token = "", 
                 int option_style = 0);

```
kind_t kind() const;
```

`validation_error` 受保护成员函数

```
std::string get_template(kind_t kind);
```
用于将 kind_t 转换为相关的错误文本