Why do you want to add & amp; Ah, ask your bosses

CodePudding user response:

Haven't seen this kind of writing, alas, all is the use of Complex & amp; Written as reference

CodePudding user response:

As mentioned above, & amp; Object reference should be behind said, citing the benefits, the main two points: one is the Create function for C modifications will be saved to the end of the function call, if not a reference, then the Create function C changes at the end of the function call is not visible, 2 it is to avoid the unnecessary objects copy, speed, small memory ~,

CodePudding user response:

I hope it can help you: https://blog.csdn.net/it_xiangqiang/category_10581430.html
I hope it can help you: https://blog.csdn.net/it_xiangqiang/category_10768339.html