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std::error_...peratorbool(3)  C++ Standard Libary std::error_...peratorbool(3)

NAME
       std::error_condition::operatorbool - std::error_condition::operatorbool

Synopsis
	  explicit operator bool() const noexcept;  (since C++11)

	  Checks whether the stored error code is not zero.

Parameters
	  (none)

Return value
	  true if value	!= 0, false otherwise.

http://cppreference.com		  2022.07.31	  std::error_...peratorbool(3)

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