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    std::nested_exception::nested_ptr

    From cppreference.com
     
    C++
     
    Utilities library
    General utilities
    Relational operators (deprecated in C++20)
    Integer comparison functions
    (C++20)(C++20)(C++20)    
    (C++20)
    Swap and type operations
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    (C++11)
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    (C++11)
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    (C++11)
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    Common vocabulary types
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    Diagnostics library
     
    std::nested_exception
     
    std::exception_ptr nested_ptr() const noexcept;
    		(since C++11)
    (constexpr since C++26)

    Returns a pointer to the stored exception, if any.

    Parameters

    (none)

    Return value

    A std::exception_ptr to the stored exception if one is stored, default-initialized std::exception_ptr otherwise.

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