这时需要使用 std::forward<T>(),保留参数的左/右值特性。 voidforward(int&&i) { cout<<"forward(int&&):"<< i <<","; process(std::forward<int>(i)); }intmain() {inta =0; forward(2);//forward(int&&): 2, process(int&&): 2forward(move(a));//forward(int&&): 0, process(int&...
6 b = std::move(t); // t为空,b占有a的初始数据 7 } 总之,std::move是为性能而生的,正式因为了有了这个主动报告废弃物的设施,所以C++11中的STL性能大幅提升,即使C++用户仍然按找旧有的方式来编码,仍然能因中新版STL等标准库的强化中收益。 std::forward是用于模板编程中的,如果不需要编写通用的模板类...
5a = std::move(b);//b为空, a占有b的初始数据 6b = std::move(t);//t为空,b占有a的初始数据 7} 总之,std::move是为性能而生的,正式因为了有了这个主动报告废弃物的设施,所以C++11中的STL性能大幅提升,即使C++用户仍然按找旧有的方式来编码,仍然能因中新版STL等标准库的强化中收益。 std::forwa...
1.【答案】C【解析】forward 副词,向前。例句:Don't move forward. 不要向前移动。2.【答案】E【解析】improve 动词,改善,改进。例句:They want to improve their living condition. 他们想改善他们的生活状况。3.【答案】B【解析】select 动词,挑选,选择。例句:He is selecting a gift for his mother. ...
试题来源: 解析 A。move forward 的反义词是 move backward,向前走和向后走是相反的方向。B 选项 sideways 是向旁边,与 forward 不是反义关系;C 选项 upward 是向上,与 forward 不同方向但不是反义;D 选项 downward 是向下,也不是反义。反馈 收藏 ...
In the game, you can move forward ___ pressing the up arrow key. A. by B. with C. on D. for 相关知识点: 试题来源: 解析 A。本题考查介词的用法。“by+动名词”表示通过某种方式,在这句话中表示通过按向上的箭头键向前移动。选项 B“with”通常表示使用某种工具,但后面一般接具体的工具名称...
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We must ___ hardships and move forward. A. get over B. get along with C. get off D. get into 相关知识点: 试题来源: 解析 A。“get over”是克服;“get along with”是与……相处;“get off”是下车、离开;“get into”是进入。必须克服困难向前走,所以选 A。反馈...
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3 a push,an object will move forward and do work.( ) A. Giving B. To give C. Being given D. Given 4 a push,an object will move forward and do work.( )GivingTo giveBeing givenGiven 5 a push,an object will move forward and do work.( )Giving To give Being given Given ...