C++函数值返回拷贝问题+RVO和NRVO【待学习】

https://blog.csdn.net/yao_zou/article/details/50759301

https://blog.csdn.net/e5Max/article/details/50180905

https://www.cnblogs.com/dolphin0520/archive/2011/04/04/2005061.html

initializer_list：http://www.cppblog.com/liyiwen/archive/2009/07/26/91248.html

for_each: https://www.cnblogs.com/zhangkele/p/9373063.html

https://blog.csdn.net/asd1230123dsa/article/details/83793583

this指针：https://www.cnblogs.com/windsun/p/11323143.html

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