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## Class invalid_syntax

boost::program_options::invalid_syntax

## Synopsis

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

    class invalid_syntax : public boost::program_options::error {
    public:
      // construct/copy/destruct
      invalid_syntax(const std::string &, const std::string &);
      ~invalid_syntax();
      std::string tokens;
      std::string msg;
    };

## Description

### `invalid_syntax` public construct/copy/destruct

1.     invalid_syntax(const std::string & tokens, const std::string & msg);

2.     ~invalid_syntax();