标准C ++库中有哪些exception类

什么是包含在标准C ++库中的exception类，它们应该用于什么？ 我知道有一些新的C ++ 11的例外，但我不知道他们是什么或他们在哪里。

Answer 1

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
实际上，大多数exception是从logic_error和runtime_error派生的自定义exception。 并不是说这些被忽视，但是很多例外都是特定领域的。

请记住，一个例外应该反映出什么地方出了问题，而不是抛出它的人。 （没有“MyProgramException”）

Answer 2

看到这个网站

 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.