Operators
语法:
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你可以使用[]操作符访问双向队列中单个的元素。
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//源代码 /** * @brief Subscript access to the data contained in the %deque. * @param n The index of the element for which data should be accessed. * @return Read/write reference to data. * * This operator allows for easy, array-style, data access. * Note that data access with this operator is unchecked and out_of_range * lookups are not defined. (For checked lookups see at().) */ reference operator[](size_type __n) { return this->_M_impl._M_start[difference_type(__n)]; } /** * @brief Subscript access to the data contained in the %deque. * @param n The index of the element for which data should be accessed. * @return Read-only (constant) reference to data. * * This operator allows for easy, array-style, data access. * Note that data access with this operator is unchecked and out_of_range * lookups are not defined. (For checked lookups see at().) */ const_reference operator[](size_type __n) const { return this->_M_impl._M_start[difference_type(__n)]; } |
测试代码：
测试结果：
dq5双向对列：
1 1 1 1 1
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