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is_disposition
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Trait used for testing whether a type satisfies the requirements of a disposition.

template<
    typename T>
struct is_disposition :
  public integral_constant< bool, automatically_determined >

To be a valid disposition, a type must be nothrow default-constructible, nothrow move-constructible, nothrow move-assignable, and there must be a specialisation of the disposition_traits template for the type that provides the following static member functions: * not_an_error: Takes an argument of type const T& and returns a bool.

  • throw_exception: Takes an argument of type T. The caller of this function must not pass a disposition value for which not_an_error returns true. This function must not return.
  • to_exception_ptr: Takes an argument of type T and returns a value of type std::exception_ptr.
Requirements

Header: boost/asio/disposition.hpp

Convenience header: boost/asio.hpp


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