Method error_code

3rd/asio-1.24.0/include/asio/error_code.hpp:84–88

Default constructor.

public:
  /// Default constructor.
  error_code()
    : value_(0),
      category_(&system_category())
  {
  }

  /// Construct with specific error code and category.
  error_code(int v, const error_category& c)