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标准C++库中有哪些异常类

  •  125
  • Mooing Duck  · 技术社区  · 13 年前

    标准C++库中包含哪些异常类,它们应该用于什么?我知道有一些新的C++11例外,但我不确定它们是什么或在哪里。

    2 回复  |  直到 11 年前
        1
  •  165
  •   Mooing Duck    7 年前
    std::exception <exception> interface (debatable if you should catch this)
        std::bad_alloc <new> failure to allocate storage
            std::bad_array_new_length <new> invalid array length
        std::bad_cast <typeinfo> execution of an invalid dynamic-cast
        std::bad_exception <exception> signifies an incorrect exception was thrown
        std::bad_function_call <functional> thrown by "null" std::function
        std::bad_typeid <typeinfo> using typeinfo on a null pointer
        std::bad_weak_ptr <memory> constructing a shared_ptr from a bad weak_ptr
        std::logic_error <stdexcept> errors detectable before the program executes
            std::domain_error <stdexcept> parameter outside the valid range
            std::future_error <future> violated a std::promise/std::future condition
            std::invalid_argument <stdexcept> invalid argument
            std::length_error <stdexcept> length exceeds its maximum allowable size
            std::out_of_range <stdexcept> argument value not in its expected range
        std::runtime_error <stdexcept> errors detectable when the program executes
            std::overflow_error <stdexcept> arithmetic overflow error.
            std::underflow_error <stdexcept> arithmetic underflow error.
            std::range_error <stdexcept> range errors in internal computations
            std::regex_error <regex> errors from the regular expression library.
            std::system_error <system_error> from operating system or other C API
                std::ios_base::failure <ios> Input or output error
    

    资料来源: http://en.cppreference.com/w/cpp/error/exception
    在实践中,大多数例外都是派生自 logic_error runtime_error 。并不是说这些都被忽略了,而是许多例外都是特定于领域的。

    请记住,异常应反映出问题所在 是谁扔的。(没有“MyProgramException”)

        2
  •  55
  •   TemplateRex    13 年前

    看看这个 site

    enter image description here

    Exception               Description
    ===================================
    std::exception          An exception and parent class of all the standard C++ exceptions.
    std::bad_alloc          This can be thrown by new.
    std::bad_cast           This can be thrown by dynamic_cast.
    std::bad_exception      This is useful device to handle unexpected exceptions in a C++ program
    std::bad_typeid         This can be thrown by typeid.
    std::logic_error        An exception that theoretically can be detected by reading the code.
    std::domain_error       This is an exception thrown when a mathematically invalid domain is used
    std::invalid_argument   This is thrown due to invalid arguments.
    std::length_error       This is thrown when a too big std::string is created
    std::out_of_range       This can be thrown by the at method from for example a std::vector and std::bitset<>::operator[]().
    std::runtime_error      An exception that theoretically can not be detected by reading the code.
    std::overflow_error     This is thrown if a mathematical overflow occurs.
    std::range_error        This is occured when you try to store a value which is out of range.
    std::underflow_error    This is thrown if a mathematical underflow occurs.