Changkun Ou 09537ae424 book: add std::forward source and auto&& explain ...

This commit deals the following questions:
- why const lvalue ref can ref rvalue?
- why auto&& is the safe way for loop?
- why std::forward can do perfect forwarding?

Fix #65

2019-07-20 11:46:36 +02:00

..

en-us

book: translation of ch04

2019-07-19 19:17:16 +02:00

zh-cn

book: add std::forward source and auto&& explain

2019-07-20 11:46:36 +02:00