Class config

include/function2/function2.hpp:182–194

/// Configuration trait to configure the function_base class.
template <bool Owning, bool Copyable, typename Capacity>
struct config {
  // Is true if the function is owning.
  static constexpr auto const is_owning = Owning;

  // Is true if the function is copyable.
  static constexpr auto const is_copyable = Copyable;

  // The internal capacity of the function
  // used in small functor optimization.
  // The object shall expose the real capacity through Capacity::capacity
  // and the intended alignment through Capacity::alignment.
  using capacity = Capacity;
};

/// A config which isn't compatible to other configs
template <bool Throws, bool HasStrongExceptGuarantee, typename... Args>