Add replace and swap functions to RefCell#2057

Merged

alexcrichton merged 2 commits intorust-lang:masterfrom notriddle:refcell_replace

Jul 31, 2017

+104

Commits on Jun 9, 2017

Create an RFC for RefCell::replace()
notriddle
committed

Commits on Jul 5, 2017

Fix a typo
notriddle
authored