Add examples to `TyKind::FnDef` and `TyKind::FnPtr` docs#54781

Merged

bors merged 2 commits intorust-lang:masterfrom

Oct 6, 2018

Commits on Oct 3, 2018

Add examples to `TyKind::FnDef` and `TyKind::FnPtr` docs
phansch
committed

Commits on Oct 4, 2018

Further improve docs for `FnDef` and `FnPtr`
phansch
committed