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std::logic_error

STD：逻辑[医]误差

Defined in header ​​
class logic_error;​​

定义要作为异常抛出的对象类型。它报告程序中错误逻辑的结果，例如违反逻辑先决条件或类不变量，并且可能是可以预防的。

没有标准库组件直接抛出此异常，但异常类型std::invalid_argument，，，std::domain_error，，，std::length_error，，，std::out_of_range，，，std::future_error，和std::experimental::bad_optional_access派生自std::logic_error...

二次

二次

继承图

成员函数

(constructor)constructs the exception object (public member function)

STD：逻辑[医]错误：：逻辑[医]误差

explicit logic_error( const std::string& what_arg (1)​
explicit logic_error( const char* what_arg (2)(since C++11)

构造异常对象what_arg作为解释性字符串，可以通过what()...

因为复制std::exception不允许抛出异常，此消息通常作为单独分配的引用计数字符串存储在内部。这也是为什么没有构造函数std::string&&：：无论如何，它必须复制内容。

参数

what_arg-explanatory string

例外

可抛std::bad_alloc...

继承自STD：例外

成员函数

(destructor) virtualdestructs the exception object (virtual public member function of std::exception)
what virtualreturns an explanatory string (virtual public member function of std::exception)

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