std::vector::at

 

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std::vector

成员函数 Original: Member functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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元素的访问 Original: Element access The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

vector::at

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迭代器 Original: Iterators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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容量 Original: Capacity The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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reference       at( size_type pos );
const_reference at( size_type pos ) const;

返回一个引用的元素在指定的位置pos。执行边界检查，将被抛出的异常的类型std::out_of_range，无效的访问.

Original:

Returns a reference to the element at specified location pos. Bounds checking is performed, exception of type std::out_of_range will be thrown on invalid access.

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参数

pos

-

该元素的位置返回 Original: position of the element to return The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

返回值

参考所需的元素

Original:

reference to the requested element

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例外

std::out_of_range if !(pos < size()).

复杂性

常数

Original:

Constant

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另请参阅

operator[]	访问指定的元素 Original: access specified element The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （公共成员函数）