std::bad_function_call
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< cpp | utility | functional
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| Defined in header <functional>
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| class bad_function_call; |
（C++11 起） | |
std::bad_function_call is the type of the exception thrown by std::function::operator() if the function wrapper has no target.
Inheritance diagram
目录 |
[编辑] 成员函数
| (constructor) |
bad_function_call() （公共成员函数） |
std::bad_function_call::bad_function_call()
| bad_function_call(); |
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Constructs a new instance of std::bad_function_call.
Parameters
(none)
Exceptions
Inherited from std::exception
Member functions
| [虚拟的] </ SPAN></div></div>
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解构异常对象 Original: destructs the exception object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （虚拟公有成员函数of std::exception）
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| [虚拟的] </ SPAN></div></div>
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返回一个说明字符串 Original: returns an explanatory string The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （虚拟公有成员函数of std::exception）
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</div>
[编辑] 为例
#include <iostream> #include <functional> int main() { std::function<int()> f = nullptr; try { f(); } catch(const std::bad_function_call& e) { std::cout << e.what() << '\n'; } }
Output:
bad function call
[编辑] 另请参阅
| （C++11） |
包装任何类型的可调用对象与指定的函数调用签名 Original: wraps callable object of any type with specified function call signature The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （类模板） |
